TY  - CONF
AU  - Đoković, Vladimir
AU  - Pajović, Jelena
AU  - Dojčilović, Radovan
AU  - Božanić, Dušan
AU  - Tošić, Dragana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13089
AB  - This study reports on the optical properties of hybrid nanostructures that comprise gold nanoparticles (Au NPs) and biomolecule riboflavin (vitamin B2, Rb). The riboflavin is photosensitizing molecule and the generation of reactive oxygen species (ROS) by the hybrid nanoparticles was tested in various aqueous and biological environments. It was shown that the gold nanoparticles enhanced the photosensitizing activity of riboflavin. A comparison of EPR spectra obtained for the Au nanoparticle colloid, hybrid nanoparticle colloid and molecular water solution revealed that the strongest ROS signal came from the AuRb nanosystem. Furthermore, the ROS signal stability was much higher than that of the molecular solution, with a time span of several minutes. Photodynamic activity of the AuRb hybrids was tested by using gram-negative bacterium Escherichia coli as a model system. The bacteria were incubated by AuRb nanoparticles and the survival rate of the colonies was investigated by fluorescent bioimaging. The obtain results provide new insights on photosensitizer’s activities and suggest advantages of using metal-based nanoplatforms for developing of novel agents for photodynamic therapies.
PB  - Belgrade : Institute of Physics
C3  - 16th Photonics Workshop : Book of abstracts
T1  - Gold-riboflavin hybrid nanostrucutures as possible photodynamic therapy agents
SP  - 52
EP  - 52
UR  - https://hdl.handle.net/21.15107/rcub_vinar_13089
ER  - 

@conference{
author = "Đoković, Vladimir and Pajović, Jelena and Dojčilović, Radovan and Božanić, Dušan and Tošić, Dragana",
year = "2023",
abstract = "This study reports on the optical properties of hybrid nanostructures that comprise gold nanoparticles (Au NPs) and biomolecule riboflavin (vitamin B2, Rb). The riboflavin is photosensitizing molecule and the generation of reactive oxygen species (ROS) by the hybrid nanoparticles was tested in various aqueous and biological environments. It was shown that the gold nanoparticles enhanced the photosensitizing activity of riboflavin. A comparison of EPR spectra obtained for the Au nanoparticle colloid, hybrid nanoparticle colloid and molecular water solution revealed that the strongest ROS signal came from the AuRb nanosystem. Furthermore, the ROS signal stability was much higher than that of the molecular solution, with a time span of several minutes. Photodynamic activity of the AuRb hybrids was tested by using gram-negative bacterium Escherichia coli as a model system. The bacteria were incubated by AuRb nanoparticles and the survival rate of the colonies was investigated by fluorescent bioimaging. The obtain results provide new insights on photosensitizer’s activities and suggest advantages of using metal-based nanoplatforms for developing of novel agents for photodynamic therapies.",
publisher = "Belgrade : Institute of Physics",
journal = "16th Photonics Workshop : Book of abstracts",
title = "Gold-riboflavin hybrid nanostrucutures as possible photodynamic therapy agents",
pages = "52-52",
url = "https://hdl.handle.net/21.15107/rcub_vinar_13089"
}

Đoković, V., Pajović, J., Dojčilović, R., Božanić, D.,& Tošić, D.. (2023). Gold-riboflavin hybrid nanostrucutures as possible photodynamic therapy agents. in 16th Photonics Workshop : Book of abstracts
Belgrade : Institute of Physics., 52-52.
https://hdl.handle.net/21.15107/rcub_vinar_13089

Đoković V, Pajović J, Dojčilović R, Božanić D, Tošić D. Gold-riboflavin hybrid nanostrucutures as possible photodynamic therapy agents. in 16th Photonics Workshop : Book of abstracts. 2023;:52-52.
https://hdl.handle.net/21.15107/rcub_vinar_13089 .

Đoković, Vladimir, Pajović, Jelena, Dojčilović, Radovan, Božanić, Dušan, Tošić, Dragana, "Gold-riboflavin hybrid nanostrucutures as possible photodynamic therapy agents" in 16th Photonics Workshop : Book of abstracts (2023):52-52,
https://hdl.handle.net/21.15107/rcub_vinar_13089 .

TY  - CONF
AU  - Božanić, Dušan
AU  - Pajović, Jelena
AU  - Danilović, Danijela
AU  - Chowdhury, Madhusree Roy
AU  - Garcia, Gustavo
AU  - Nahon, Laurent
AU  - Đoković, Vladimir
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13049
AB  - Azobenzenes (Azo) represent a class of organic compounds composed of two phenyl rings linked by an N=N double bond that exhibit photoisomerization, i.e. change in conformation upon UV or visible light illumination. Photoisomerization in Azo is of high yield and reversible, which is why these molecules can act as molecular photoswitches in various biomedical and energy conversion applications. However, a broader application of Azo, particularly in biomedicine, requires lower energy of photoisomerization that falls further into visible or even NIR range. In our study, selected azobenzenes were conjugated to the surface of bare gold nanoparticles (Au NP) to obtain functional hybrid nanosystems in which photoisomerization of Azo can occur upon excitation of surface plasmon in Au NP. To understand the nature of the process, the valence band structure of Azo-functionalized Au NP was investigated by synchrotron radiation VUV aerosol photoemission spectroscopy. The results demonstrate that the overlap between the valence bands of Azo and Au NP is significant to allow for chare transfer process between the components in the nanosystem.
PB  - Belgrade : Institute of Physics
C3  - 16th Photonics Workshop : Book of abstracts
T1  - Valence Band Electronic Structure of Azobenzene-Functionalized Gold Nanoparticles
SP  - 51
EP  - 51
UR  - https://hdl.handle.net/21.15107/rcub_vinar_13049
ER  - 

@conference{
author = "Božanić, Dušan and Pajović, Jelena and Danilović, Danijela and Chowdhury, Madhusree Roy and Garcia, Gustavo and Nahon, Laurent and Đoković, Vladimir",
year = "2023",
abstract = "Azobenzenes (Azo) represent a class of organic compounds composed of two phenyl rings linked by an N=N double bond that exhibit photoisomerization, i.e. change in conformation upon UV or visible light illumination. Photoisomerization in Azo is of high yield and reversible, which is why these molecules can act as molecular photoswitches in various biomedical and energy conversion applications. However, a broader application of Azo, particularly in biomedicine, requires lower energy of photoisomerization that falls further into visible or even NIR range. In our study, selected azobenzenes were conjugated to the surface of bare gold nanoparticles (Au NP) to obtain functional hybrid nanosystems in which photoisomerization of Azo can occur upon excitation of surface plasmon in Au NP. To understand the nature of the process, the valence band structure of Azo-functionalized Au NP was investigated by synchrotron radiation VUV aerosol photoemission spectroscopy. The results demonstrate that the overlap between the valence bands of Azo and Au NP is significant to allow for chare transfer process between the components in the nanosystem.",
publisher = "Belgrade : Institute of Physics",
journal = "16th Photonics Workshop : Book of abstracts",
title = "Valence Band Electronic Structure of Azobenzene-Functionalized Gold Nanoparticles",
pages = "51-51",
url = "https://hdl.handle.net/21.15107/rcub_vinar_13049"
}

Božanić, D., Pajović, J., Danilović, D., Chowdhury, M. R., Garcia, G., Nahon, L.,& Đoković, V.. (2023). Valence Band Electronic Structure of Azobenzene-Functionalized Gold Nanoparticles. in 16th Photonics Workshop : Book of abstracts
Belgrade : Institute of Physics., 51-51.
https://hdl.handle.net/21.15107/rcub_vinar_13049

Božanić D, Pajović J, Danilović D, Chowdhury MR, Garcia G, Nahon L, Đoković V. Valence Band Electronic Structure of Azobenzene-Functionalized Gold Nanoparticles. in 16th Photonics Workshop : Book of abstracts. 2023;:51-51.
https://hdl.handle.net/21.15107/rcub_vinar_13049 .

Božanić, Dušan, Pajović, Jelena, Danilović, Danijela, Chowdhury, Madhusree Roy, Garcia, Gustavo, Nahon, Laurent, Đoković, Vladimir, "Valence Band Electronic Structure of Azobenzene-Functionalized Gold Nanoparticles" in 16th Photonics Workshop : Book of abstracts (2023):51-51,
https://hdl.handle.net/21.15107/rcub_vinar_13049 .

TY  - CONF
AU  - Danilović, Danijela
AU  - Božanić, Dušan K.
AU  - Pajović, Jelena
AU  - Garcia, Gustavo
AU  - Nahon, Laurent
AU  - Marić, T.
AU  - Đoković, Vladimir
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11555
AB  - Silver-silver sulfide (Ag-Ag2S) hybrid nanosystem which consists of plasmonic metal Ag and narrow band gap semiconductor Ag2S is typically studied as a photocatalyst under visible and NIR light [1,2]. Janus morphology of this system is especially interesting due to the possibility of initiating two different chemical reactions that are spatially separated on two halves of the system. Here, we present the fabrication of Ag-Ag2S Janus nanoparticles and the examination of their valence electronic structure. For the investigation of the electronic structure of isolated nanoparticles, we performed synchrotron radiation vacuum ultraviolet photoelectron spectroscopy using the velocity map imaging (VMI) technique. By using two different photon energies, hν = 9.5 eV and hν = 11 eV, we obtained angle-resolved photoelectron images. Photoemission spectra and the dependence of the asymmetry parameter α on the binding energy are derived from VMI images using modified p-Basex inversion method [3]. In addition, we coupled Ag-Ag2S nanoparticles to the TiO2 and studied the actuation of obtained hybrid nanosystem in a liquid medium under visible and NIR light.
PB  - Belgrade : Vinča Institute of Nuclear Sciences
C3  - PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade
T1  - Synchrotron radiation photoemission spectroscopy study of the valence band electronic structure of Ag-Ag2S Janus nanoparticles for the development of nanomotors propelled by NIR light
SP  - 35
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11555
ER  - 

@conference{
author = "Danilović, Danijela and Božanić, Dušan K. and Pajović, Jelena and Garcia, Gustavo and Nahon, Laurent and Marić, T. and Đoković, Vladimir",
year = "2023",
abstract = "Silver-silver sulfide (Ag-Ag2S) hybrid nanosystem which consists of plasmonic metal Ag and narrow band gap semiconductor Ag2S is typically studied as a photocatalyst under visible and NIR light [1,2]. Janus morphology of this system is especially interesting due to the possibility of initiating two different chemical reactions that are spatially separated on two halves of the system. Here, we present the fabrication of Ag-Ag2S Janus nanoparticles and the examination of their valence electronic structure. For the investigation of the electronic structure of isolated nanoparticles, we performed synchrotron radiation vacuum ultraviolet photoelectron spectroscopy using the velocity map imaging (VMI) technique. By using two different photon energies, hν = 9.5 eV and hν = 11 eV, we obtained angle-resolved photoelectron images. Photoemission spectra and the dependence of the asymmetry parameter α on the binding energy are derived from VMI images using modified p-Basex inversion method [3]. In addition, we coupled Ag-Ag2S nanoparticles to the TiO2 and studied the actuation of obtained hybrid nanosystem in a liquid medium under visible and NIR light.",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences",
journal = "PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade",
title = "Synchrotron radiation photoemission spectroscopy study of the valence band electronic structure of Ag-Ag2S Janus nanoparticles for the development of nanomotors propelled by NIR light",
pages = "35",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11555"
}

Danilović, D., Božanić, D. K., Pajović, J., Garcia, G., Nahon, L., Marić, T.,& Đoković, V.. (2023). Synchrotron radiation photoemission spectroscopy study of the valence band electronic structure of Ag-Ag2S Janus nanoparticles for the development of nanomotors propelled by NIR light. in PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade
Belgrade : Vinča Institute of Nuclear Sciences., 35.
https://hdl.handle.net/21.15107/rcub_vinar_11555

Danilović D, Božanić DK, Pajović J, Garcia G, Nahon L, Marić T, Đoković V. Synchrotron radiation photoemission spectroscopy study of the valence band electronic structure of Ag-Ag2S Janus nanoparticles for the development of nanomotors propelled by NIR light. in PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade. 2023;:35.
https://hdl.handle.net/21.15107/rcub_vinar_11555 .

Danilović, Danijela, Božanić, Dušan K., Pajović, Jelena, Garcia, Gustavo, Nahon, Laurent, Marić, T., Đoković, Vladimir, "Synchrotron radiation photoemission spectroscopy study of the valence band electronic structure of Ag-Ag2S Janus nanoparticles for the development of nanomotors propelled by NIR light" in PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade (2023):35,
https://hdl.handle.net/21.15107/rcub_vinar_11555 .

TY  - CONF
AU  - Đoković, Vladimir
AU  - Danilović, Danijela
AU  - Pajović, Jelena
AU  - Dojčilović, Radovan
AU  - Trpkov, Đorđe
AU  - Božanić, Dušan K.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12418
AB  - Interest in developing micro/nano motors (MNMs) increased rapidly in the last couple of years. These advanced systems can address critical challenges in manipulation of objects at small-scales. Micro/nano motors are capable to move controllably in fluids under the influence of various stimuli (thermal, magnetic, light, etc.) and perform specific operations, including propelling micromachines. Here we synthesized two types of hybrid Janus particles, Au-TiO2 and AgAg2S-TiO2, and tested them as possible light-driven micromotors. Light, as a versatile power source, allows non-invasive control of the motion of the motors with high spatial and temporal resolutions. Illumination induce asymmetric reactions on the two sides of the Janus particles, which can create the propulsion. To optimize the properties of the MNMs, we performed synchrotron radiation gas-phase photoemission spectroscopy (SR PES) of the free standing hybrid particles at synchrotron SOLEIL, France. SR PES provided an information about the valence level alignment of the components, possible hybrid states and dominant scattering processes.
C3  - SFKM : 21. Simpozijum fizike kondenzovane materije = SCMP : the 21st symposium on condensed matter physics : book of abstracts
T1  - Fabrication Hybrid Janus Nanoparticles and Their Application as Light-Driven Micromotors
SP  - 16
EP  - 16
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12418
ER  - 

@conference{
author = "Đoković, Vladimir and Danilović, Danijela and Pajović, Jelena and Dojčilović, Radovan and Trpkov, Đorđe and Božanić, Dušan K.",
year = "2023",
abstract = "Interest in developing micro/nano motors (MNMs) increased rapidly in the last couple of years. These advanced systems can address critical challenges in manipulation of objects at small-scales. Micro/nano motors are capable to move controllably in fluids under the influence of various stimuli (thermal, magnetic, light, etc.) and perform specific operations, including propelling micromachines. Here we synthesized two types of hybrid Janus particles, Au-TiO2 and AgAg2S-TiO2, and tested them as possible light-driven micromotors. Light, as a versatile power source, allows non-invasive control of the motion of the motors with high spatial and temporal resolutions. Illumination induce asymmetric reactions on the two sides of the Janus particles, which can create the propulsion. To optimize the properties of the MNMs, we performed synchrotron radiation gas-phase photoemission spectroscopy (SR PES) of the free standing hybrid particles at synchrotron SOLEIL, France. SR PES provided an information about the valence level alignment of the components, possible hybrid states and dominant scattering processes.",
journal = "SFKM : 21. Simpozijum fizike kondenzovane materije = SCMP : the 21st symposium on condensed matter physics : book of abstracts",
title = "Fabrication Hybrid Janus Nanoparticles and Their Application as Light-Driven Micromotors",
pages = "16-16",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12418"
}

Đoković, V., Danilović, D., Pajović, J., Dojčilović, R., Trpkov, Đ.,& Božanić, D. K.. (2023). Fabrication Hybrid Janus Nanoparticles and Their Application as Light-Driven Micromotors. in SFKM : 21. Simpozijum fizike kondenzovane materije = SCMP : the 21st symposium on condensed matter physics : book of abstracts, 16-16.
https://hdl.handle.net/21.15107/rcub_vinar_12418

Đoković V, Danilović D, Pajović J, Dojčilović R, Trpkov Đ, Božanić DK. Fabrication Hybrid Janus Nanoparticles and Their Application as Light-Driven Micromotors. in SFKM : 21. Simpozijum fizike kondenzovane materije = SCMP : the 21st symposium on condensed matter physics : book of abstracts. 2023;:16-16.
https://hdl.handle.net/21.15107/rcub_vinar_12418 .

Đoković, Vladimir, Danilović, Danijela, Pajović, Jelena, Dojčilović, Radovan, Trpkov, Đorđe, Božanić, Dušan K., "Fabrication Hybrid Janus Nanoparticles and Their Application as Light-Driven Micromotors" in SFKM : 21. Simpozijum fizike kondenzovane materije = SCMP : the 21st symposium on condensed matter physics : book of abstracts (2023):16-16,
https://hdl.handle.net/21.15107/rcub_vinar_12418 .

TY  - JOUR
AU  - Pajović, Jelena D.
AU  - Dojčilović, Radovan
AU  - Kaščáková, Slávka
AU  - Réfrégiers, Matthieu
AU  - Božanić, Dušan K.
AU  - Đoković, Vladimir
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11022
AB  - Gold nanoparticles were functionalized by amino acid tryptophan and vitamin riboflavin - a resonance energy transfer (RET) pair of biomolecules. The presence of the gold nanoparticles resulted in 65% increase in RET efficiency. Because of enhanced RET efficiency, the photobleaching dynamics of the fluorescent molecules at the surface of the nanoparticles is different from that of molecules in solution. The observed effect was used for detection of the functionalized nanoparticles within biological material rich with autofluorescent species. Synchrotron radiation deep-ultraviolet fluorescence microscopy is used to study the photobleaching dynamics of the fluorescence centers within human hepatocellular carcinoma Huh7.5.1 cells incubated with the nanoparticles. The fluorescent centers were classified according to their photobleaching dynamics, which enabled the discrimination of the cell areas where the accumulation of the nanoparticles takes place, even though the particles were smaller than the spatial resolution of the images.
T2  - Colloids and Surfaces B: Biointerfaces
T1  - Enhanced resonance energy transfer in gold nanoparticles bifunctionalized by tryptophan and riboflavin and its application in fluorescence bioimaging
VL  - 227
SP  - 113340
DO  - 10.1016/j.colsurfb.2023.113340
ER  - 

@article{
author = "Pajović, Jelena D. and Dojčilović, Radovan and Kaščáková, Slávka and Réfrégiers, Matthieu and Božanić, Dušan K. and Đoković, Vladimir",
year = "2023",
abstract = "Gold nanoparticles were functionalized by amino acid tryptophan and vitamin riboflavin - a resonance energy transfer (RET) pair of biomolecules. The presence of the gold nanoparticles resulted in 65% increase in RET efficiency. Because of enhanced RET efficiency, the photobleaching dynamics of the fluorescent molecules at the surface of the nanoparticles is different from that of molecules in solution. The observed effect was used for detection of the functionalized nanoparticles within biological material rich with autofluorescent species. Synchrotron radiation deep-ultraviolet fluorescence microscopy is used to study the photobleaching dynamics of the fluorescence centers within human hepatocellular carcinoma Huh7.5.1 cells incubated with the nanoparticles. The fluorescent centers were classified according to their photobleaching dynamics, which enabled the discrimination of the cell areas where the accumulation of the nanoparticles takes place, even though the particles were smaller than the spatial resolution of the images.",
journal = "Colloids and Surfaces B: Biointerfaces",
title = "Enhanced resonance energy transfer in gold nanoparticles bifunctionalized by tryptophan and riboflavin and its application in fluorescence bioimaging",
volume = "227",
pages = "113340",
doi = "10.1016/j.colsurfb.2023.113340"
}

Pajović, J. D., Dojčilović, R., Kaščáková, S., Réfrégiers, M., Božanić, D. K.,& Đoković, V.. (2023). Enhanced resonance energy transfer in gold nanoparticles bifunctionalized by tryptophan and riboflavin and its application in fluorescence bioimaging. in Colloids and Surfaces B: Biointerfaces, 227, 113340.
https://doi.org/10.1016/j.colsurfb.2023.113340

Pajović JD, Dojčilović R, Kaščáková S, Réfrégiers M, Božanić DK, Đoković V. Enhanced resonance energy transfer in gold nanoparticles bifunctionalized by tryptophan and riboflavin and its application in fluorescence bioimaging. in Colloids and Surfaces B: Biointerfaces. 2023;227:113340.
doi:10.1016/j.colsurfb.2023.113340 .

Pajović, Jelena D., Dojčilović, Radovan, Kaščáková, Slávka, Réfrégiers, Matthieu, Božanić, Dušan K., Đoković, Vladimir, "Enhanced resonance energy transfer in gold nanoparticles bifunctionalized by tryptophan and riboflavin and its application in fluorescence bioimaging" in Colloids and Surfaces B: Biointerfaces, 227 (2023):113340,
https://doi.org/10.1016/j.colsurfb.2023.113340 . .

TY  - CONF
AU  - Trpkov, Đorđe
AU  - Sredojević, Dušan
AU  - Tošić, Dragana
AU  - Pajović, J.
AU  - Božanić, Dušan K.
AU  - Đoković, Vladimir
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11806
AB  - Graphene quantum dots, zero-dimensional form of graphene, have a band gap that can be controlled by changing their size, shape, edge morphology, number of layers etc. Moreover, they have various edge terminations that can be physically/chemically functionalized for numerous applications in nano electronics, biosensors, supercapacitors, and nanomedicine. In the present study, we hydrothermally synthesized nitrogen-doped graphene quantum dots (NGQD), using simple, fast synthetic route and eco-friendly chemicals, such as citric acid and urea (amine group-rich). The obtained NGQD were physically functionalized by L-phenylalanine, aromatic amino acid with interesting fluorescent properties. The hybrid NGQD-LPhe samples were characterized with UV/Vis, Raman, ATR Fourier transformed infra-red and photoluminescence (PL) spectroscopies, while their morphologies were studied by using atomic force microscopy. This work created a base for future investigations on graphene/biomolecules hybrids and their applications in fields of bioimaging and drug delivery. In addition, the experimental results were supported by DFT calculations of non-covalent stacking and hydrogen bonding interactions between NGQD and biomolecules.
PB  - Belgrade : Vinča Institute of Nuclear Sciences
C3  - PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade
T1  - Yellow fluorescent, water soluble N-doped graphene quantum dots: synthesis, photoluminescence and functionalization with L-Phenylalanine
SP  - 66
EP  - 66
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11806
ER  - 

@conference{
author = "Trpkov, Đorđe and Sredojević, Dušan and Tošić, Dragana and Pajović, J. and Božanić, Dušan K. and Đoković, Vladimir",
year = "2023",
abstract = "Graphene quantum dots, zero-dimensional form of graphene, have a band gap that can be controlled by changing their size, shape, edge morphology, number of layers etc. Moreover, they have various edge terminations that can be physically/chemically functionalized for numerous applications in nano electronics, biosensors, supercapacitors, and nanomedicine. In the present study, we hydrothermally synthesized nitrogen-doped graphene quantum dots (NGQD), using simple, fast synthetic route and eco-friendly chemicals, such as citric acid and urea (amine group-rich). The obtained NGQD were physically functionalized by L-phenylalanine, aromatic amino acid with interesting fluorescent properties. The hybrid NGQD-LPhe samples were characterized with UV/Vis, Raman, ATR Fourier transformed infra-red and photoluminescence (PL) spectroscopies, while their morphologies were studied by using atomic force microscopy. This work created a base for future investigations on graphene/biomolecules hybrids and their applications in fields of bioimaging and drug delivery. In addition, the experimental results were supported by DFT calculations of non-covalent stacking and hydrogen bonding interactions between NGQD and biomolecules.",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences",
journal = "PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade",
title = "Yellow fluorescent, water soluble N-doped graphene quantum dots: synthesis, photoluminescence and functionalization with L-Phenylalanine",
pages = "66-66",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11806"
}

Trpkov, Đ., Sredojević, D., Tošić, D., Pajović, J., Božanić, D. K.,& Đoković, V.. (2023). Yellow fluorescent, water soluble N-doped graphene quantum dots: synthesis, photoluminescence and functionalization with L-Phenylalanine. in PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade
Belgrade : Vinča Institute of Nuclear Sciences., 66-66.
https://hdl.handle.net/21.15107/rcub_vinar_11806

Trpkov Đ, Sredojević D, Tošić D, Pajović J, Božanić DK, Đoković V. Yellow fluorescent, water soluble N-doped graphene quantum dots: synthesis, photoluminescence and functionalization with L-Phenylalanine. in PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade. 2023;:66-66.
https://hdl.handle.net/21.15107/rcub_vinar_11806 .

Trpkov, Đorđe, Sredojević, Dušan, Tošić, Dragana, Pajović, J., Božanić, Dušan K., Đoković, Vladimir, "Yellow fluorescent, water soluble N-doped graphene quantum dots: synthesis, photoluminescence and functionalization with L-Phenylalanine" in PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade (2023):66-66,
https://hdl.handle.net/21.15107/rcub_vinar_11806 .

TY  - CONF
AU  - Pavlović, V. B.
AU  - Vuković, G.
AU  - Nikolić, M.
AU  - Pavlović, V. P.
AU  - Perić, M.
AU  - Nenadović, Snežana
AU  - Ivanović, M.
AU  - Mirković, M.
AU  - Đoković, Vladimir
AU  - Knežević, S.
AU  - Šuljagić, M.
AU  - Anđelković, Lj.
AU  - Janićijević, A.
AU  - Kovačević, D.
AU  - Filipović, S.
AU  - Vujančević, J.
AU  - Vlahović, B.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11634
AB  - The convergence of nano-, bio-, and information technologies is based on the understanding of complex hierarchical structures and systems, as well as on the material unity at the nanoscale and on technology integration from that scale. A growing interest in these technologies is a result of their potential to provide solutions to numerous societal challenges, such as advanced healthcare, environmental remediation, sustainable development, and adoption of cyber-physical systems based on the Internet of Things and the Internet of Systems. Taking into account that hybrid nanomaterials possess extraordinary physical and chemical properties derived from their size in the nanoscale, the aim of this work is to present the connection between processing parameters and multifunctional properties of nano scale hybrid materials, focusing on the study of ceramic-polymer structures before they can be nano-engineered into functional devices. The unique functionality of these nanostructures has enabled their applications in numerous devices such as: micro and nano-electro-mechanical systems (MEMS/NEMS), sensors, microactuators, surface acoustic wave devices, polymer electrolyte membrane fuel cells, switches, thermistors, resonators and filters, electrooptic devices, etc. In this study special attention has been paid to their applications in the fields of electronics, biotechnology, environmental protection and remediation.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade
T1  - Hybrid Nanoscale Materials for Convergent Technologies
SP  - 45
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11634
ER  - 

@conference{
author = "Pavlović, V. B. and Vuković, G. and Nikolić, M. and Pavlović, V. P. and Perić, M. and Nenadović, Snežana and Ivanović, M. and Mirković, M. and Đoković, Vladimir and Knežević, S. and Šuljagić, M. and Anđelković, Lj. and Janićijević, A. and Kovačević, D. and Filipović, S. and Vujančević, J. and Vlahović, B.",
year = "2023",
abstract = "The convergence of nano-, bio-, and information technologies is based on the understanding of complex hierarchical structures and systems, as well as on the material unity at the nanoscale and on technology integration from that scale. A growing interest in these technologies is a result of their potential to provide solutions to numerous societal challenges, such as advanced healthcare, environmental remediation, sustainable development, and adoption of cyber-physical systems based on the Internet of Things and the Internet of Systems. Taking into account that hybrid nanomaterials possess extraordinary physical and chemical properties derived from their size in the nanoscale, the aim of this work is to present the connection between processing parameters and multifunctional properties of nano scale hybrid materials, focusing on the study of ceramic-polymer structures before they can be nano-engineered into functional devices. The unique functionality of these nanostructures has enabled their applications in numerous devices such as: micro and nano-electro-mechanical systems (MEMS/NEMS), sensors, microactuators, surface acoustic wave devices, polymer electrolyte membrane fuel cells, switches, thermistors, resonators and filters, electrooptic devices, etc. In this study special attention has been paid to their applications in the fields of electronics, biotechnology, environmental protection and remediation.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade",
title = "Hybrid Nanoscale Materials for Convergent Technologies",
pages = "45",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11634"
}

Pavlović, V. B., Vuković, G., Nikolić, M., Pavlović, V. P., Perić, M., Nenadović, S., Ivanović, M., Mirković, M., Đoković, V., Knežević, S., Šuljagić, M., Anđelković, Lj., Janićijević, A., Kovačević, D., Filipović, S., Vujančević, J.,& Vlahović, B.. (2023). Hybrid Nanoscale Materials for Convergent Technologies. in Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade
Belgrade : Serbian Ceramic Society., 45.
https://hdl.handle.net/21.15107/rcub_vinar_11634

Pavlović VB, Vuković G, Nikolić M, Pavlović VP, Perić M, Nenadović S, Ivanović M, Mirković M, Đoković V, Knežević S, Šuljagić M, Anđelković L, Janićijević A, Kovačević D, Filipović S, Vujančević J, Vlahović B. Hybrid Nanoscale Materials for Convergent Technologies. in Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade. 2023;:45.
https://hdl.handle.net/21.15107/rcub_vinar_11634 .

Pavlović, V. B., Vuković, G., Nikolić, M., Pavlović, V. P., Perić, M., Nenadović, Snežana, Ivanović, M., Mirković, M., Đoković, Vladimir, Knežević, S., Šuljagić, M., Anđelković, Lj., Janićijević, A., Kovačević, D., Filipović, S., Vujančević, J., Vlahović, B., "Hybrid Nanoscale Materials for Convergent Technologies" in Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade (2023):45,
https://hdl.handle.net/21.15107/rcub_vinar_11634 .

TY  - JOUR
AU  - Đoković, Vladimir
AU  - Dudić, Duško
AU  - Dojčilović, Radovan
AU  - Marinković, Filip S.
AU  - Pavlović, Vera P.
AU  - Pavlović, Vladimir B.
AU  - Vlahović, Branislav
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11656
AB  - Barium titanate (BT) perovskite particles were surface modified by means of mechanical treatment and used as inorganic component in polyvinylidene fluoride (PVDF) based composites. The changes in electrical properties of the composite films with increasing in filler content were followed by dielectric spectroscopy, breakdown strength and D-E measurements. A comparison of the properties of the composites prepared with untreated and mechanically activated particles revealed that there is a significant difference in their performances at low filler concentrations (<20 wt%). Introduction of the surface modified ceramic particles into PVDF matrix led to an increase of the dielectric constant without affecting significantly the electrical breakdown strength. In contrast, when as received BT particles were used a filler, both dielectric constants and breakdown strengths of the composite films were lower than the corresponding values observed for the pure PVDF. At higher concentrations, however, the influence of pre-treatment of the filler on the effective electrical properties becomes less significant. The obtained results were discussed in terms of the pronounced crystallization of polar β and γ crystal phases of PVDF in the presence of surface modified BT fillers, which is confirmed by Raman spectroscopy.
T2  - Physica Scripta
T1  - Toward improved PVDF-BaTiO3 composite dielectrics: mechanical activation of the filler versus filler content
VL  - 98
IS  - 11
SP  - 115932
DO  - 10.1088/1402-4896/acff4d
ER  - 

@article{
author = "Đoković, Vladimir and Dudić, Duško and Dojčilović, Radovan and Marinković, Filip S. and Pavlović, Vera P. and Pavlović, Vladimir B. and Vlahović, Branislav",
year = "2023",
abstract = "Barium titanate (BT) perovskite particles were surface modified by means of mechanical treatment and used as inorganic component in polyvinylidene fluoride (PVDF) based composites. The changes in electrical properties of the composite films with increasing in filler content were followed by dielectric spectroscopy, breakdown strength and D-E measurements. A comparison of the properties of the composites prepared with untreated and mechanically activated particles revealed that there is a significant difference in their performances at low filler concentrations (<20 wt%). Introduction of the surface modified ceramic particles into PVDF matrix led to an increase of the dielectric constant without affecting significantly the electrical breakdown strength. In contrast, when as received BT particles were used a filler, both dielectric constants and breakdown strengths of the composite films were lower than the corresponding values observed for the pure PVDF. At higher concentrations, however, the influence of pre-treatment of the filler on the effective electrical properties becomes less significant. The obtained results were discussed in terms of the pronounced crystallization of polar β and γ crystal phases of PVDF in the presence of surface modified BT fillers, which is confirmed by Raman spectroscopy.",
journal = "Physica Scripta",
title = "Toward improved PVDF-BaTiO3 composite dielectrics: mechanical activation of the filler versus filler content",
volume = "98",
number = "11",
pages = "115932",
doi = "10.1088/1402-4896/acff4d"
}

Đoković, V., Dudić, D., Dojčilović, R., Marinković, F. S., Pavlović, V. P., Pavlović, V. B.,& Vlahović, B.. (2023). Toward improved PVDF-BaTiO3 composite dielectrics: mechanical activation of the filler versus filler content. in Physica Scripta, 98(11), 115932.
https://doi.org/10.1088/1402-4896/acff4d

Đoković V, Dudić D, Dojčilović R, Marinković FS, Pavlović VP, Pavlović VB, Vlahović B. Toward improved PVDF-BaTiO3 composite dielectrics: mechanical activation of the filler versus filler content. in Physica Scripta. 2023;98(11):115932.
doi:10.1088/1402-4896/acff4d .

Đoković, Vladimir, Dudić, Duško, Dojčilović, Radovan, Marinković, Filip S., Pavlović, Vera P., Pavlović, Vladimir B., Vlahović, Branislav, "Toward improved PVDF-BaTiO3 composite dielectrics: mechanical activation of the filler versus filler content" in Physica Scripta, 98, no. 11 (2023):115932,
https://doi.org/10.1088/1402-4896/acff4d . .

TY  - CONF
AU  - Tošić, Dragana
AU  - Dojčilović, R.
AU  - Božanić, D.
AU  - Trpkov, Đorđe
AU  - Đoković, Vladimir
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11807
AB  - Anthocyanins are water-soluble, non-toxic flavonoid pigments, which produce the blue, red and purple color of many plants. Color change of anthocyanin extracts is a direct consequence of the transformation of their chemical structure when exposed to different pH conditions. Optical properties investigated in UV-Vis absorption and PL spectra show a clear difference between anthocyanins in acidic and in alkaline environments. Chitosan, a natural-based, non-toxic and biodegradable polysaccharide, is chosen as an ideal matrix for nanocomposites. It is proven to be a good carrier for anthocyanins, because of its ability to entrap the indicator dyes and at the same time the ability to release anthocyanins when in contact with an acidic environment. In this research, we have developed anthocyanin-enhanced biopolymer indicator systems, which provide fast colorimetric response to alterations in pH levels of the environment. Transmittance spectra of nanocomposites show excellent light-blocking properties of the films. This opens up possibilities for advancement in future technology of smart biodegradable food packaging biomaterials. The availability of innovative and healthy materials reduces the need for using synthetic plastic in the modern food industry.
PB  - Belgrade : Vinča Institute of Nuclear Sciences
C3  - PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade
T1  - Anthocyanin-functionalized biopolymer films as pH-sensitive indicators
SP  - 69
EP  - 69
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11807
ER  - 

@conference{
author = "Tošić, Dragana and Dojčilović, R. and Božanić, D. and Trpkov, Đorđe and Đoković, Vladimir",
year = "2023",
abstract = "Anthocyanins are water-soluble, non-toxic flavonoid pigments, which produce the blue, red and purple color of many plants. Color change of anthocyanin extracts is a direct consequence of the transformation of their chemical structure when exposed to different pH conditions. Optical properties investigated in UV-Vis absorption and PL spectra show a clear difference between anthocyanins in acidic and in alkaline environments. Chitosan, a natural-based, non-toxic and biodegradable polysaccharide, is chosen as an ideal matrix for nanocomposites. It is proven to be a good carrier for anthocyanins, because of its ability to entrap the indicator dyes and at the same time the ability to release anthocyanins when in contact with an acidic environment. In this research, we have developed anthocyanin-enhanced biopolymer indicator systems, which provide fast colorimetric response to alterations in pH levels of the environment. Transmittance spectra of nanocomposites show excellent light-blocking properties of the films. This opens up possibilities for advancement in future technology of smart biodegradable food packaging biomaterials. The availability of innovative and healthy materials reduces the need for using synthetic plastic in the modern food industry.",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences",
journal = "PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade",
title = "Anthocyanin-functionalized biopolymer films as pH-sensitive indicators",
pages = "69-69",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11807"
}

Tošić, D., Dojčilović, R., Božanić, D., Trpkov, Đ.,& Đoković, V.. (2023). Anthocyanin-functionalized biopolymer films as pH-sensitive indicators. in PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade
Belgrade : Vinča Institute of Nuclear Sciences., 69-69.
https://hdl.handle.net/21.15107/rcub_vinar_11807

Tošić D, Dojčilović R, Božanić D, Trpkov Đ, Đoković V. Anthocyanin-functionalized biopolymer films as pH-sensitive indicators. in PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade. 2023;:69-69.
https://hdl.handle.net/21.15107/rcub_vinar_11807 .

Tošić, Dragana, Dojčilović, R., Božanić, D., Trpkov, Đorđe, Đoković, Vladimir, "Anthocyanin-functionalized biopolymer films as pH-sensitive indicators" in PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade (2023):69-69,
https://hdl.handle.net/21.15107/rcub_vinar_11807 .

TY  - JOUR
AU  - Danilović, Danijela
AU  - Božanić, Dušan K.
AU  - Garcia, Gustavo A.
AU  - Nahon, Laurent
AU  - Stamenović, Una
AU  - Vodnik, Vesna
AU  - Đoković, Vladimir
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10385
AB  - The angle-resolved photoelectron spectroscopy of isolated silver sulfide nanoparticles was carried out by using velocity map imaging technique at the DESIRS beamline of SOLEIL synchrotron facility. The reported spectroscopy results were obtained after interaction of the synchrotron radiation with a polydisperse aerosol produced from aqueous dispersion of silver sulfide particles, approximately 16 nm in diameter. The photoelectron and UV–Vis-NIR absorption spectra were used to estimate the maximum energy of the valance- and the minimum energy of the conduction-band of the nanoparticles. With respect to the vacuum level, the obtained values were found to be 5.5 ± 0.1 eV and 4.5 ± 0.1 eV for the valence band maximum and conduction band minimum, respectively. The dependence of the asymmetry parameter on the electron energy along the silver sulfide valence band showed an onset of inelastic scattering at ~ 1 eV electron kinetic energy.
T2  - Optical and Quantum Electronics
T1  - Velocity map imaging VUV angle-resolved photoelectron spectroscopy of isolated silver sulfide nanoparticles
VL  - 54
IS  - 9
SP  - 604
DO  - 10.1007/s11082-022-03972-6
ER  - 

@article{
author = "Danilović, Danijela and Božanić, Dušan K. and Garcia, Gustavo A. and Nahon, Laurent and Stamenović, Una and Vodnik, Vesna and Đoković, Vladimir",
year = "2022",
abstract = "The angle-resolved photoelectron spectroscopy of isolated silver sulfide nanoparticles was carried out by using velocity map imaging technique at the DESIRS beamline of SOLEIL synchrotron facility. The reported spectroscopy results were obtained after interaction of the synchrotron radiation with a polydisperse aerosol produced from aqueous dispersion of silver sulfide particles, approximately 16 nm in diameter. The photoelectron and UV–Vis-NIR absorption spectra were used to estimate the maximum energy of the valance- and the minimum energy of the conduction-band of the nanoparticles. With respect to the vacuum level, the obtained values were found to be 5.5 ± 0.1 eV and 4.5 ± 0.1 eV for the valence band maximum and conduction band minimum, respectively. The dependence of the asymmetry parameter on the electron energy along the silver sulfide valence band showed an onset of inelastic scattering at ~ 1 eV electron kinetic energy.",
journal = "Optical and Quantum Electronics",
title = "Velocity map imaging VUV angle-resolved photoelectron spectroscopy of isolated silver sulfide nanoparticles",
volume = "54",
number = "9",
pages = "604",
doi = "10.1007/s11082-022-03972-6"
}

Danilović, D., Božanić, D. K., Garcia, G. A., Nahon, L., Stamenović, U., Vodnik, V.,& Đoković, V.. (2022). Velocity map imaging VUV angle-resolved photoelectron spectroscopy of isolated silver sulfide nanoparticles. in Optical and Quantum Electronics, 54(9), 604.
https://doi.org/10.1007/s11082-022-03972-6

Danilović D, Božanić DK, Garcia GA, Nahon L, Stamenović U, Vodnik V, Đoković V. Velocity map imaging VUV angle-resolved photoelectron spectroscopy of isolated silver sulfide nanoparticles. in Optical and Quantum Electronics. 2022;54(9):604.
doi:10.1007/s11082-022-03972-6 .

Danilović, Danijela, Božanić, Dušan K., Garcia, Gustavo A., Nahon, Laurent, Stamenović, Una, Vodnik, Vesna, Đoković, Vladimir, "Velocity map imaging VUV angle-resolved photoelectron spectroscopy of isolated silver sulfide nanoparticles" in Optical and Quantum Electronics, 54, no. 9 (2022):604,
https://doi.org/10.1007/s11082-022-03972-6 . .

TY  - JOUR
AU  - Danilović, Danijela
AU  - Milosavljević, Aleksandar R.
AU  - Sapkota, Pitambar
AU  - Dojčilović, Radovan
AU  - Tošić, Dragana
AU  - Vukmirović, Nenad
AU  - Jocić, Milan
AU  - Đoković, Vladimir
AU  - Ptasinska, Sylwia
AU  - Božanić, Dušan K.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10402
AB  - Silver–bismuth iodide (Ag–Bi–I) rudorffites are chemically stable and non-toxic materials that can act as a possible lead-free replacement for methylammonium lead halides in optoelectronic applications. We report on a simple route for fabricating Ag–Bi–I colloidal nanoplatelets approximately 160 nm in lateral dimensions and 1–8 nm in thickness via exfoliation of Ag–Bi–I rudorffite powders in acetonitrile. The valence band electronic structure of isolated Ag–Bi–I nanoplatelets was investigated using synchrotron radiation to perform X-ray aerosol photoelectron spectroscopy (XAPS). The ionization energy of the material was found to be 6.1 ± 0.2 eV with respect to the vacuum level. UV–vis absorption and photoluminescence spectroscopies of the Ag–Bi–I colloids showed that the optical properties of the nanoplatelets originate from I 5p to Bi 6p and I 5p to I 5p transitions, which is further confirmed by density functional theory (DFT) calculations. Finally, calculations based on the DFT and k · p theoretical methods showed that the quantum confinement effect is very weak in the system studied.
T2  - The Journal of Physical Chemistry C
T1  - Electronic Properties of Silver–Bismuth Iodide Rudorffite Nanoplatelets
VL  - 126
IS  - 32
SP  - 13739
EP  - 13747
DO  - 10.1021/acs.jpcc.2c03208
ER  - 

@article{
author = "Danilović, Danijela and Milosavljević, Aleksandar R. and Sapkota, Pitambar and Dojčilović, Radovan and Tošić, Dragana and Vukmirović, Nenad and Jocić, Milan and Đoković, Vladimir and Ptasinska, Sylwia and Božanić, Dušan K.",
year = "2022",
abstract = "Silver–bismuth iodide (Ag–Bi–I) rudorffites are chemically stable and non-toxic materials that can act as a possible lead-free replacement for methylammonium lead halides in optoelectronic applications. We report on a simple route for fabricating Ag–Bi–I colloidal nanoplatelets approximately 160 nm in lateral dimensions and 1–8 nm in thickness via exfoliation of Ag–Bi–I rudorffite powders in acetonitrile. The valence band electronic structure of isolated Ag–Bi–I nanoplatelets was investigated using synchrotron radiation to perform X-ray aerosol photoelectron spectroscopy (XAPS). The ionization energy of the material was found to be 6.1 ± 0.2 eV with respect to the vacuum level. UV–vis absorption and photoluminescence spectroscopies of the Ag–Bi–I colloids showed that the optical properties of the nanoplatelets originate from I 5p to Bi 6p and I 5p to I 5p transitions, which is further confirmed by density functional theory (DFT) calculations. Finally, calculations based on the DFT and k · p theoretical methods showed that the quantum confinement effect is very weak in the system studied.",
journal = "The Journal of Physical Chemistry C",
title = "Electronic Properties of Silver–Bismuth Iodide Rudorffite Nanoplatelets",
volume = "126",
number = "32",
pages = "13739-13747",
doi = "10.1021/acs.jpcc.2c03208"
}

Danilović, D., Milosavljević, A. R., Sapkota, P., Dojčilović, R., Tošić, D., Vukmirović, N., Jocić, M., Đoković, V., Ptasinska, S.,& Božanić, D. K.. (2022). Electronic Properties of Silver–Bismuth Iodide Rudorffite Nanoplatelets. in The Journal of Physical Chemistry C, 126(32), 13739-13747.
https://doi.org/10.1021/acs.jpcc.2c03208

Danilović D, Milosavljević AR, Sapkota P, Dojčilović R, Tošić D, Vukmirović N, Jocić M, Đoković V, Ptasinska S, Božanić DK. Electronic Properties of Silver–Bismuth Iodide Rudorffite Nanoplatelets. in The Journal of Physical Chemistry C. 2022;126(32):13739-13747.
doi:10.1021/acs.jpcc.2c03208 .

Danilović, Danijela, Milosavljević, Aleksandar R., Sapkota, Pitambar, Dojčilović, Radovan, Tošić, Dragana, Vukmirović, Nenad, Jocić, Milan, Đoković, Vladimir, Ptasinska, Sylwia, Božanić, Dušan K., "Electronic Properties of Silver–Bismuth Iodide Rudorffite Nanoplatelets" in The Journal of Physical Chemistry C, 126, no. 32 (2022):13739-13747,
https://doi.org/10.1021/acs.jpcc.2c03208 . .

TY  - CONF
AU  - Božanić, Dušan K.
AU  - Danilović, Danijela
AU  - Milosavljević, R. M.
AU  - Sapkota, P.
AU  - Dojčilović, Radovan
AU  - Tošić, Dragana
AU  - Vukmirović, N.
AU  - Ptasinska, S.
AU  - Đoković, Vladimir
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10795
AB  - Silver-bismuth iodide (Ag-Bi-I) rudorffites are chemically stable and non-toxic materials that can act as a possible replacement for methylammonium lead halide perovskites in optoelectronic devices. In this report we will present innovative routes for fabrication of AgBi-I nanomaterials, as well as the results of the investigation of the electronic structure of isolated Ag-Bi-I nanoparticles by soft X-ray aerosol photoemission spectroscopy [1, 2]. Aerosol photoemission spectroscopy allows studies of the electronic structure of submicrometer particles that are free from the influence of a substrate or solvent [1-5]. In this approach the aerosol particles can be produced directly from a solution or a colloidal dispersion, which opens a possibility for investigation of a variety of nanosystems that can be produced by wet chemistry methods. This technique relies on the interaction of focused beam of isolated particles with ionizing radiation under high vacuum conditions. In addition, by using tunable synchrotron radiation as an excitation source it is possible to obtain highresolution photoelectron spectra in the investigated photoelectron energy range.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 10th Serbian Ceramic Society Conference : program and the book of abstracts; September 26-27, 2022; Belgrade
T1  - Electronic structure of silver-bismuth iodide rudorffite nanomaterials studied by synchrotron radiation soft X-ray photoemission spectroscopy
SP  - 59
EP  - 60
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10795
ER  - 

@conference{
author = "Božanić, Dušan K. and Danilović, Danijela and Milosavljević, R. M. and Sapkota, P. and Dojčilović, Radovan and Tošić, Dragana and Vukmirović, N. and Ptasinska, S. and Đoković, Vladimir",
year = "2022",
abstract = "Silver-bismuth iodide (Ag-Bi-I) rudorffites are chemically stable and non-toxic materials that can act as a possible replacement for methylammonium lead halide perovskites in optoelectronic devices. In this report we will present innovative routes for fabrication of AgBi-I nanomaterials, as well as the results of the investigation of the electronic structure of isolated Ag-Bi-I nanoparticles by soft X-ray aerosol photoemission spectroscopy [1, 2]. Aerosol photoemission spectroscopy allows studies of the electronic structure of submicrometer particles that are free from the influence of a substrate or solvent [1-5]. In this approach the aerosol particles can be produced directly from a solution or a colloidal dispersion, which opens a possibility for investigation of a variety of nanosystems that can be produced by wet chemistry methods. This technique relies on the interaction of focused beam of isolated particles with ionizing radiation under high vacuum conditions. In addition, by using tunable synchrotron radiation as an excitation source it is possible to obtain highresolution photoelectron spectra in the investigated photoelectron energy range.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 10th Serbian Ceramic Society Conference : program and the book of abstracts; September 26-27, 2022; Belgrade",
title = "Electronic structure of silver-bismuth iodide rudorffite nanomaterials studied by synchrotron radiation soft X-ray photoemission spectroscopy",
pages = "59-60",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10795"
}

Božanić, D. K., Danilović, D., Milosavljević, R. M., Sapkota, P., Dojčilović, R., Tošić, D., Vukmirović, N., Ptasinska, S.,& Đoković, V.. (2022). Electronic structure of silver-bismuth iodide rudorffite nanomaterials studied by synchrotron radiation soft X-ray photoemission spectroscopy. in Advanced Ceramics and Application : 10th Serbian Ceramic Society Conference : program and the book of abstracts; September 26-27, 2022; Belgrade
Belgrade : Serbian Ceramic Society., 59-60.
https://hdl.handle.net/21.15107/rcub_vinar_10795

Božanić DK, Danilović D, Milosavljević RM, Sapkota P, Dojčilović R, Tošić D, Vukmirović N, Ptasinska S, Đoković V. Electronic structure of silver-bismuth iodide rudorffite nanomaterials studied by synchrotron radiation soft X-ray photoemission spectroscopy. in Advanced Ceramics and Application : 10th Serbian Ceramic Society Conference : program and the book of abstracts; September 26-27, 2022; Belgrade. 2022;:59-60.
https://hdl.handle.net/21.15107/rcub_vinar_10795 .

Božanić, Dušan K., Danilović, Danijela, Milosavljević, R. M., Sapkota, P., Dojčilović, Radovan, Tošić, Dragana, Vukmirović, N., Ptasinska, S., Đoković, Vladimir, "Electronic structure of silver-bismuth iodide rudorffite nanomaterials studied by synchrotron radiation soft X-ray photoemission spectroscopy" in Advanced Ceramics and Application : 10th Serbian Ceramic Society Conference : program and the book of abstracts; September 26-27, 2022; Belgrade (2022):59-60,
https://hdl.handle.net/21.15107/rcub_vinar_10795 .

TY  - CONF
AU  - Trpkov, Đorđe
AU  - Danilović, Danijela
AU  - Pajović, Jelena
AU  - Dojčilović, Radovan
AU  - Pavlović, V. B.
AU  - Sekulić, Milica
AU  - Božanić, Dušan K.
AU  - Đoković, Vladimir
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10823
AB  - We report on hydrothermal synthesis of zinc oxide (ZnO) hexagonal microrods and microtubes. Zinc oxide seeds were deposited onto glass slides by dip coating and used as templates for hydrothermal growth of ZnO microcrystals. The process was carried out in an alkaline reaction medium with acetate and nitrate zinc precursors, using hexamethylene tetramine (HMT) as surfactant. The obtained ZnO microrods were successfully decorated with silver particles via dipping ZnO-containing glass slides in silver nitrate solution and subsequent UV irradiation (5 min). Zinc oxide and Ag/ZnO microparticles were characterized by SEM, EDS and XRD. The presented results are part of the larger concept of developing of anisotropic Ag/ZnO microrods for conversion of chemical to mechanical energy.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 10th Serbian Ceramic Society Conference : program and the book of abstracts; September 26-27, 2022; Belgrade
T1  - Fabrication of silver-decorated zinc oxide microrods by hydrothermal method
SP  - 83
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10823
ER  - 

@conference{
author = "Trpkov, Đorđe and Danilović, Danijela and Pajović, Jelena and Dojčilović, Radovan and Pavlović, V. B. and Sekulić, Milica and Božanić, Dušan K. and Đoković, Vladimir",
year = "2022",
abstract = "We report on hydrothermal synthesis of zinc oxide (ZnO) hexagonal microrods and microtubes. Zinc oxide seeds were deposited onto glass slides by dip coating and used as templates for hydrothermal growth of ZnO microcrystals. The process was carried out in an alkaline reaction medium with acetate and nitrate zinc precursors, using hexamethylene tetramine (HMT) as surfactant. The obtained ZnO microrods were successfully decorated with silver particles via dipping ZnO-containing glass slides in silver nitrate solution and subsequent UV irradiation (5 min). Zinc oxide and Ag/ZnO microparticles were characterized by SEM, EDS and XRD. The presented results are part of the larger concept of developing of anisotropic Ag/ZnO microrods for conversion of chemical to mechanical energy.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 10th Serbian Ceramic Society Conference : program and the book of abstracts; September 26-27, 2022; Belgrade",
title = "Fabrication of silver-decorated zinc oxide microrods by hydrothermal method",
pages = "83",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10823"
}

Trpkov, Đ., Danilović, D., Pajović, J., Dojčilović, R., Pavlović, V. B., Sekulić, M., Božanić, D. K.,& Đoković, V.. (2022). Fabrication of silver-decorated zinc oxide microrods by hydrothermal method. in Advanced Ceramics and Application : 10th Serbian Ceramic Society Conference : program and the book of abstracts; September 26-27, 2022; Belgrade
Belgrade : Serbian Ceramic Society., 83.
https://hdl.handle.net/21.15107/rcub_vinar_10823

Trpkov Đ, Danilović D, Pajović J, Dojčilović R, Pavlović VB, Sekulić M, Božanić DK, Đoković V. Fabrication of silver-decorated zinc oxide microrods by hydrothermal method. in Advanced Ceramics and Application : 10th Serbian Ceramic Society Conference : program and the book of abstracts; September 26-27, 2022; Belgrade. 2022;:83.
https://hdl.handle.net/21.15107/rcub_vinar_10823 .

Trpkov, Đorđe, Danilović, Danijela, Pajović, Jelena, Dojčilović, Radovan, Pavlović, V. B., Sekulić, Milica, Božanić, Dušan K., Đoković, Vladimir, "Fabrication of silver-decorated zinc oxide microrods by hydrothermal method" in Advanced Ceramics and Application : 10th Serbian Ceramic Society Conference : program and the book of abstracts; September 26-27, 2022; Belgrade (2022):83,
https://hdl.handle.net/21.15107/rcub_vinar_10823 .

TY  - JOUR
AU  - Božanić, Dušan K.
AU  - Dojčilović, Radovan
AU  - Pajović, Jelena D.
AU  - Tošić, Dragana
AU  - Dudić, Duško
AU  - Réfrégiers, Matthieu
AU  - Đoković, Vladimir
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10076
AB  - Fluorescent nanocomposite films were prepared by solution mixing of polyvinyl alcohol (PVA) and tryptophan functionalized silver (AgTrp) nanoparticles. Synchrotron excitation deep-ultraviolet (DUV) fluorescence imaging was used to follow the distribution of AgTrp nanoparticles within the polymer matrix. Pronounced growth of dendrite-like structures in the presence of AgTrp nanoparticles was confirmed by bright field and fluorescence imaging as well as with atomic force microscopies. Both tryptophan and AgTrp nanoparticles influence thermal properties of the matrix. Differential scanning calorimetry measurements showed that they reduce crystallinity and significantly increase the glass transition temperature of PVA (in the case of PVA-AgTrp film the Tg increases by ~20 °C). Dielectric properties of the films were studied under two different conditions (dark and illumination). The illumination with 250 nm light induces a significant increase in conductance of the PVA-AgTrp nanocomposite. The relative changes, with respect to the conductance measured in the dark, were almost ~200%.
T2  - Colloids and Surfaces. A: Physicochemical and Engineering Aspects
T1  - Fluorescence microscopy and photodielectric characterization studies of the composite films of polyvinyl alcohol and tryptophan functionalized silver nanoparticles
VL  - 634
SP  - 128050
DO  - 10.1016/j.colsurfa.2021.128050
ER  - 

@article{
author = "Božanić, Dušan K. and Dojčilović, Radovan and Pajović, Jelena D. and Tošić, Dragana and Dudić, Duško and Réfrégiers, Matthieu and Đoković, Vladimir",
year = "2022",
abstract = "Fluorescent nanocomposite films were prepared by solution mixing of polyvinyl alcohol (PVA) and tryptophan functionalized silver (AgTrp) nanoparticles. Synchrotron excitation deep-ultraviolet (DUV) fluorescence imaging was used to follow the distribution of AgTrp nanoparticles within the polymer matrix. Pronounced growth of dendrite-like structures in the presence of AgTrp nanoparticles was confirmed by bright field and fluorescence imaging as well as with atomic force microscopies. Both tryptophan and AgTrp nanoparticles influence thermal properties of the matrix. Differential scanning calorimetry measurements showed that they reduce crystallinity and significantly increase the glass transition temperature of PVA (in the case of PVA-AgTrp film the Tg increases by ~20 °C). Dielectric properties of the films were studied under two different conditions (dark and illumination). The illumination with 250 nm light induces a significant increase in conductance of the PVA-AgTrp nanocomposite. The relative changes, with respect to the conductance measured in the dark, were almost ~200%.",
journal = "Colloids and Surfaces. A: Physicochemical and Engineering Aspects",
title = "Fluorescence microscopy and photodielectric characterization studies of the composite films of polyvinyl alcohol and tryptophan functionalized silver nanoparticles",
volume = "634",
pages = "128050",
doi = "10.1016/j.colsurfa.2021.128050"
}

Božanić, D. K., Dojčilović, R., Pajović, J. D., Tošić, D., Dudić, D., Réfrégiers, M.,& Đoković, V.. (2022). Fluorescence microscopy and photodielectric characterization studies of the composite films of polyvinyl alcohol and tryptophan functionalized silver nanoparticles. in Colloids and Surfaces. A: Physicochemical and Engineering Aspects, 634, 128050.
https://doi.org/10.1016/j.colsurfa.2021.128050

Božanić DK, Dojčilović R, Pajović JD, Tošić D, Dudić D, Réfrégiers M, Đoković V. Fluorescence microscopy and photodielectric characterization studies of the composite films of polyvinyl alcohol and tryptophan functionalized silver nanoparticles. in Colloids and Surfaces. A: Physicochemical and Engineering Aspects. 2022;634:128050.
doi:10.1016/j.colsurfa.2021.128050 .

Božanić, Dušan K., Dojčilović, Radovan, Pajović, Jelena D., Tošić, Dragana, Dudić, Duško, Réfrégiers, Matthieu, Đoković, Vladimir, "Fluorescence microscopy and photodielectric characterization studies of the composite films of polyvinyl alcohol and tryptophan functionalized silver nanoparticles" in Colloids and Surfaces. A: Physicochemical and Engineering Aspects, 634 (2022):128050,
https://doi.org/10.1016/j.colsurfa.2021.128050 . .

TY  - JOUR
AU  - Đoković, Vladimir
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10216
AB  - The problem of unity or disunity of the self is discussed from the point of view of various disciplines. The first part of the study concerns the notion of self-fragmentation present in Human sciences (particularly in Psychology and Cognitive sciences) and its relationship to religious views. The focus is on the narrative self and its fragmentation through narrative practices. In the second part, I examine Jacques Derrida’s work on deconstruction and its implications related to the fragmentation of the self. Deconstruction is presented in terms of formalism in Mathematics. The final part concerns the possible splitting of the conscious self of the observer in quantum mechanical (QM) experiments. Specifically, I consider the quantum mechanical interpretations of ‘splitting brain’ suggested by von Neumann and the ‘many-minds’ suggested by Albert and Loewer. © 2022, Ecozone, OAIMDD. All rights reserved.
T2  - European Journal of Science and Theology
T1  - The fragmented self a multidisciplinary approach
VL  - 18
IS  - 2
SP  - 111
EP  - 123
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10216
ER  - 

@article{
author = "Đoković, Vladimir",
year = "2022",
abstract = "The problem of unity or disunity of the self is discussed from the point of view of various disciplines. The first part of the study concerns the notion of self-fragmentation present in Human sciences (particularly in Psychology and Cognitive sciences) and its relationship to religious views. The focus is on the narrative self and its fragmentation through narrative practices. In the second part, I examine Jacques Derrida’s work on deconstruction and its implications related to the fragmentation of the self. Deconstruction is presented in terms of formalism in Mathematics. The final part concerns the possible splitting of the conscious self of the observer in quantum mechanical (QM) experiments. Specifically, I consider the quantum mechanical interpretations of ‘splitting brain’ suggested by von Neumann and the ‘many-minds’ suggested by Albert and Loewer. © 2022, Ecozone, OAIMDD. All rights reserved.",
journal = "European Journal of Science and Theology",
title = "The fragmented self a multidisciplinary approach",
volume = "18",
number = "2",
pages = "111-123",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10216"
}

Đoković, V.. (2022). The fragmented self a multidisciplinary approach. in European Journal of Science and Theology, 18(2), 111-123.
https://hdl.handle.net/21.15107/rcub_vinar_10216

Đoković V. The fragmented self a multidisciplinary approach. in European Journal of Science and Theology. 2022;18(2):111-123.
https://hdl.handle.net/21.15107/rcub_vinar_10216 .

Đoković, Vladimir, "The fragmented self a multidisciplinary approach" in European Journal of Science and Theology, 18, no. 2 (2022):111-123,
https://hdl.handle.net/21.15107/rcub_vinar_10216 .

TY  - JOUR
AU  - Pavlović, Vera P.
AU  - Tošić, Dragana
AU  - Dojčilović, Radovan
AU  - Dudić, Duško
AU  - Dramićanin, Miroslav
AU  - Medić, Mina M.
AU  - McPherson, Michael M.
AU  - Pavlović, Vladimir B.
AU  - Vlahović, Branislav
AU  - Đoković, Vladimir
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9563
AB  - Na0.25K0.25Bi0.5TiO3 (NKBT) perovskite particles are synthesized by solid-state method and used as a filler for polyvinylidene fluoride-co-hexafluoropropylene (PVDF-HFP) co-polymer. X-ray diffraction analysis of NKBT powders shows that the particles have a rhombohedral perovskite crystal structure (R3c symmetry). Raman spectroscopy reveals that the co-polymer crystallizes predominantly into the mixture of polar β- and γ-crystals, while there is also a contribution of the non-polar α-crystal phase. The introduction of the NKBT into the PVDF-HFP results with an increase in effective dielectric permittivity and this effect depends on the inorganic content in the composite. The most interesting result of the present study is that the introduction of NKBT particles induces the appearance of an additional transition peak in the dielectric spectra of the co-polymer matrix. At the fixed frequency of ~2 kHz, the observed process appears at ~10 °C (about 45° above the glass transition temperature) and its magnitude strongly depends on the amount of the NKBT in the composite. Dielectric spectroscopy measurements of the composites are carried out in the wide range of frequencies (from 0.1 Hz to 1 MHz) and temperatures (from −100 to 100 °C). They reveal that the novel process can be clearly distinguished in the frequency range between 160 Hz and ~50 kHz. © 2021 The Authors
T2  - Polymer Testing
T1  - PVDF-HFP/NKBT composite dielectrics: Perovskite particles induce the appearance of an additional dielectric relaxation process in ferroelectric polymer matrix
VL  - 96
SP  - 107093
DO  - 10.1016/j.polymertesting.2021.107093
ER  - 

@article{
author = "Pavlović, Vera P. and Tošić, Dragana and Dojčilović, Radovan and Dudić, Duško and Dramićanin, Miroslav and Medić, Mina M. and McPherson, Michael M. and Pavlović, Vladimir B. and Vlahović, Branislav and Đoković, Vladimir",
year = "2021",
abstract = "Na0.25K0.25Bi0.5TiO3 (NKBT) perovskite particles are synthesized by solid-state method and used as a filler for polyvinylidene fluoride-co-hexafluoropropylene (PVDF-HFP) co-polymer. X-ray diffraction analysis of NKBT powders shows that the particles have a rhombohedral perovskite crystal structure (R3c symmetry). Raman spectroscopy reveals that the co-polymer crystallizes predominantly into the mixture of polar β- and γ-crystals, while there is also a contribution of the non-polar α-crystal phase. The introduction of the NKBT into the PVDF-HFP results with an increase in effective dielectric permittivity and this effect depends on the inorganic content in the composite. The most interesting result of the present study is that the introduction of NKBT particles induces the appearance of an additional transition peak in the dielectric spectra of the co-polymer matrix. At the fixed frequency of ~2 kHz, the observed process appears at ~10 °C (about 45° above the glass transition temperature) and its magnitude strongly depends on the amount of the NKBT in the composite. Dielectric spectroscopy measurements of the composites are carried out in the wide range of frequencies (from 0.1 Hz to 1 MHz) and temperatures (from −100 to 100 °C). They reveal that the novel process can be clearly distinguished in the frequency range between 160 Hz and ~50 kHz. © 2021 The Authors",
journal = "Polymer Testing",
title = "PVDF-HFP/NKBT composite dielectrics: Perovskite particles induce the appearance of an additional dielectric relaxation process in ferroelectric polymer matrix",
volume = "96",
pages = "107093",
doi = "10.1016/j.polymertesting.2021.107093"
}

Pavlović, V. P., Tošić, D., Dojčilović, R., Dudić, D., Dramićanin, M., Medić, M. M., McPherson, M. M., Pavlović, V. B., Vlahović, B.,& Đoković, V.. (2021). PVDF-HFP/NKBT composite dielectrics: Perovskite particles induce the appearance of an additional dielectric relaxation process in ferroelectric polymer matrix. in Polymer Testing, 96, 107093.
https://doi.org/10.1016/j.polymertesting.2021.107093

Pavlović VP, Tošić D, Dojčilović R, Dudić D, Dramićanin M, Medić MM, McPherson MM, Pavlović VB, Vlahović B, Đoković V. PVDF-HFP/NKBT composite dielectrics: Perovskite particles induce the appearance of an additional dielectric relaxation process in ferroelectric polymer matrix. in Polymer Testing. 2021;96:107093.
doi:10.1016/j.polymertesting.2021.107093 .

Pavlović, Vera P., Tošić, Dragana, Dojčilović, Radovan, Dudić, Duško, Dramićanin, Miroslav, Medić, Mina M., McPherson, Michael M., Pavlović, Vladimir B., Vlahović, Branislav, Đoković, Vladimir, "PVDF-HFP/NKBT composite dielectrics: Perovskite particles induce the appearance of an additional dielectric relaxation process in ferroelectric polymer matrix" in Polymer Testing, 96 (2021):107093,
https://doi.org/10.1016/j.polymertesting.2021.107093 . .

TY  - CONF
AU  - Danilović, Danijela
AU  - Božanić, Dušan K.
AU  - Milosavljević, Aleksandar R.
AU  - Dojčilović, Radovan
AU  - Tošić, Dragana
AU  - Đoković, Vladimir
AU  - Sapkota, Pitambar
AU  - Ptasinska, Sylwia
AU  - Vukmirović, Nenad
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10902
AB  - Silver-bismuth-iodide (Ag-Bi-I) rudorffite hybrid materials havegained an immense interest in the research for a lead-free, chemically stable and low-cost absorber material in photovoltaic devices [1].These materials can be fabricated in the form of macroscopic crystals or as thin films,in which case they can be integrated into solar cells that show good photoconversion efficiency[2]. Fabricating AgBi-I in nanocrystal form couldfacilitate further their integration in the photovoltaic devices and enhance device performance due to size confinement effects. In our previous study, we successfully fabricated ligand-free Ag3BiI6nanoparticles in the form of aerosols [3]. Here, we report on thefabricationprocedure of 2D Ag-Bi-I nanomaterials in the colloidal form. The results of the structural and morphological investigation of the nanosheets will be presented, as well as reconstruction of the electronic levels of the Ag3BiI6nanoparticles from the combined UV-vis absorption andX-ray photoelectron spectroscopy data.In addition, an analysis that shows the relation between the positions of the bands in the Ag3BiI6nanosheet absorption spectra and the thickness of the nanosheet will be discussed.
PB  - Belgrade : Institute of Physics Belgrade
C3  - PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade
T1  - 2D silver-bismuth-iodide rudorffitenanomaterials for photovoltaic devices: a novel route for chemical synthesis of Ag3BiI6nanosheets
SP  - 76
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10902
ER  - 

@conference{
author = "Danilović, Danijela and Božanić, Dušan K. and Milosavljević, Aleksandar R. and Dojčilović, Radovan and Tošić, Dragana and Đoković, Vladimir and Sapkota, Pitambar and Ptasinska, Sylwia and Vukmirović, Nenad",
year = "2021",
abstract = "Silver-bismuth-iodide (Ag-Bi-I) rudorffite hybrid materials havegained an immense interest in the research for a lead-free, chemically stable and low-cost absorber material in photovoltaic devices [1].These materials can be fabricated in the form of macroscopic crystals or as thin films,in which case they can be integrated into solar cells that show good photoconversion efficiency[2]. Fabricating AgBi-I in nanocrystal form couldfacilitate further their integration in the photovoltaic devices and enhance device performance due to size confinement effects. In our previous study, we successfully fabricated ligand-free Ag3BiI6nanoparticles in the form of aerosols [3]. Here, we report on thefabricationprocedure of 2D Ag-Bi-I nanomaterials in the colloidal form. The results of the structural and morphological investigation of the nanosheets will be presented, as well as reconstruction of the electronic levels of the Ag3BiI6nanoparticles from the combined UV-vis absorption andX-ray photoelectron spectroscopy data.In addition, an analysis that shows the relation between the positions of the bands in the Ag3BiI6nanosheet absorption spectra and the thickness of the nanosheet will be discussed.",
publisher = "Belgrade : Institute of Physics Belgrade",
journal = "PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade",
title = "2D silver-bismuth-iodide rudorffitenanomaterials for photovoltaic devices: a novel route for chemical synthesis of Ag3BiI6nanosheets",
pages = "76",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10902"
}

Danilović, D., Božanić, D. K., Milosavljević, A. R., Dojčilović, R., Tošić, D., Đoković, V., Sapkota, P., Ptasinska, S.,& Vukmirović, N.. (2021). 2D silver-bismuth-iodide rudorffitenanomaterials for photovoltaic devices: a novel route for chemical synthesis of Ag3BiI6nanosheets. in PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade
Belgrade : Institute of Physics Belgrade., 76.
https://hdl.handle.net/21.15107/rcub_vinar_10902

Danilović D, Božanić DK, Milosavljević AR, Dojčilović R, Tošić D, Đoković V, Sapkota P, Ptasinska S, Vukmirović N. 2D silver-bismuth-iodide rudorffitenanomaterials for photovoltaic devices: a novel route for chemical synthesis of Ag3BiI6nanosheets. in PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade. 2021;:76.
https://hdl.handle.net/21.15107/rcub_vinar_10902 .

Danilović, Danijela, Božanić, Dušan K., Milosavljević, Aleksandar R., Dojčilović, Radovan, Tošić, Dragana, Đoković, Vladimir, Sapkota, Pitambar, Ptasinska, Sylwia, Vukmirović, Nenad, "2D silver-bismuth-iodide rudorffitenanomaterials for photovoltaic devices: a novel route for chemical synthesis of Ag3BiI6nanosheets" in PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade (2021):76,
https://hdl.handle.net/21.15107/rcub_vinar_10902 .

TY  - CONF
AU  - Pajović, Jelena
AU  - Dojčilović, Radovan
AU  - Kaščakova, S.
AU  - Refregiers, M.
AU  - Božanić, Dušan K.
AU  - Đoković, Vladimir
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10897
AB  - Molecular resonance energy transfer (RET) is a basis of a half-century-old tool known as the molecular ruler, used for inference of mutual distances of two spectrally-coupled fluorophores usually relevant in biological contexts [1]. RET influences not only the absolute intensities of fluorescence signals of the molecular pair, but also their other optical characteristics, e.g. the valence electrons’ excited states. On the other hand, metal-based hybrid nanostructures show great promise as future multifunctional nanoplatforms, due to their superior sensitivity to external perturbations [2]. The metal components of the nanostructures influence the optical properties of fluorescent molecules in the vicinity, similarly as bulk metals do, which often presents a drawback. Here we want to demonstrate how this particular feature in metal-based nanosystems can be used as an advantage point in conventional biophysical imaging if the beneficial underlying physical mechanisms are identified [3]. In this talk, we will first explain the influence of gold nanoparticles on resonance energy transfer between tryptophan, essential amino acid, and riboflavin, vitamin B2, in an aqueous environment. We will show that the relative change of the signal in the tryptophan spectral channel is more pronounced when the biomolecules are attached to the nanoparticles. Afterward, we will demonstrate how timelapse fluorescence imaging of nanoparticle-incubated liver cancer cells can be used for inferring subcellular areas of nanoparticle accumulation. By exposing the incubated cell to continuous UV radiation, the photobleaching of the fluorescent molecules in the sample occurs. Being sensitive to the electronic structure of the fluorophore, the photobleaching rates of different subareas in the cell show distinctive trends, depending on the chemical composition. As the nanoparticles promote RET between tryptophan and riboflavin, the nanostructures exhibit a particular photobleaching trend compared to the cells' endogenous fluorescent species [4]. Thus, by separating areas of fluorescence images into different classes based on their photobleaching rates, i.e. grouping the pixels of the same signal trends, we are able to infer the preferential accumulation sites of bifunctionalized gold nanoparticles by using fluorescence microscopy of lower lateral resolution than the size of the nanoparticles. In this way, we demonstrate a potent auxiliary detection modality of metal-based hybrid nanostructures in optical imaging.
PB  - Belgrade : Institute of Physics Belgrade
C3  - PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade
T1  - Pixel categorization based on resonance energy transfer between fluorescent molecules: a pathway towards localization of functionalized metal nanoparticles in individual cells by fluorescence microscopy
SP  - 46
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10897
ER  - 

@conference{
author = "Pajović, Jelena and Dojčilović, Radovan and Kaščakova, S. and Refregiers, M. and Božanić, Dušan K. and Đoković, Vladimir",
year = "2021",
abstract = "Molecular resonance energy transfer (RET) is a basis of a half-century-old tool known as the molecular ruler, used for inference of mutual distances of two spectrally-coupled fluorophores usually relevant in biological contexts [1]. RET influences not only the absolute intensities of fluorescence signals of the molecular pair, but also their other optical characteristics, e.g. the valence electrons’ excited states. On the other hand, metal-based hybrid nanostructures show great promise as future multifunctional nanoplatforms, due to their superior sensitivity to external perturbations [2]. The metal components of the nanostructures influence the optical properties of fluorescent molecules in the vicinity, similarly as bulk metals do, which often presents a drawback. Here we want to demonstrate how this particular feature in metal-based nanosystems can be used as an advantage point in conventional biophysical imaging if the beneficial underlying physical mechanisms are identified [3]. In this talk, we will first explain the influence of gold nanoparticles on resonance energy transfer between tryptophan, essential amino acid, and riboflavin, vitamin B2, in an aqueous environment. We will show that the relative change of the signal in the tryptophan spectral channel is more pronounced when the biomolecules are attached to the nanoparticles. Afterward, we will demonstrate how timelapse fluorescence imaging of nanoparticle-incubated liver cancer cells can be used for inferring subcellular areas of nanoparticle accumulation. By exposing the incubated cell to continuous UV radiation, the photobleaching of the fluorescent molecules in the sample occurs. Being sensitive to the electronic structure of the fluorophore, the photobleaching rates of different subareas in the cell show distinctive trends, depending on the chemical composition. As the nanoparticles promote RET between tryptophan and riboflavin, the nanostructures exhibit a particular photobleaching trend compared to the cells' endogenous fluorescent species [4]. Thus, by separating areas of fluorescence images into different classes based on their photobleaching rates, i.e. grouping the pixels of the same signal trends, we are able to infer the preferential accumulation sites of bifunctionalized gold nanoparticles by using fluorescence microscopy of lower lateral resolution than the size of the nanoparticles. In this way, we demonstrate a potent auxiliary detection modality of metal-based hybrid nanostructures in optical imaging.",
publisher = "Belgrade : Institute of Physics Belgrade",
journal = "PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade",
title = "Pixel categorization based on resonance energy transfer between fluorescent molecules: a pathway towards localization of functionalized metal nanoparticles in individual cells by fluorescence microscopy",
pages = "46",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10897"
}

Pajović, J., Dojčilović, R., Kaščakova, S., Refregiers, M., Božanić, D. K.,& Đoković, V.. (2021). Pixel categorization based on resonance energy transfer between fluorescent molecules: a pathway towards localization of functionalized metal nanoparticles in individual cells by fluorescence microscopy. in PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade
Belgrade : Institute of Physics Belgrade., 46.
https://hdl.handle.net/21.15107/rcub_vinar_10897

Pajović J, Dojčilović R, Kaščakova S, Refregiers M, Božanić DK, Đoković V. Pixel categorization based on resonance energy transfer between fluorescent molecules: a pathway towards localization of functionalized metal nanoparticles in individual cells by fluorescence microscopy. in PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade. 2021;:46.
https://hdl.handle.net/21.15107/rcub_vinar_10897 .

Pajović, Jelena, Dojčilović, Radovan, Kaščakova, S., Refregiers, M., Božanić, Dušan K., Đoković, Vladimir, "Pixel categorization based on resonance energy transfer between fluorescent molecules: a pathway towards localization of functionalized metal nanoparticles in individual cells by fluorescence microscopy" in PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade (2021):46,
https://hdl.handle.net/21.15107/rcub_vinar_10897 .

TY  - JOUR
AU  - Zara, Bernadett
AU  - Polgár, Máté
AU  - Sipos, György
AU  - Dóka, Gábor
AU  - Gogate, Parag
AU  - Đoković, Vladimir
AU  - Csóka, Levente
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9656
AB  - Hydrodynamic cavitation treatment was used for the functional inactivation of quorum-sensing lactone molecules of Pseudomonas aeruginosa. Hydroxyl radicals formed as well as the shear effects during the cavitation process induced the inactivation of the signal molecules through hydrolysis reaction coupled with bacterial destruction. Concentration of two different types of homoserine lactones (HSL) molecules was tested after the treatment at various rotational speeds. It was found that the strongest effects can be achieved at speeds > 2000 rpm. This value is considered as an onset speed of dominant cavitation, and it is in agreement with literature data. The experimental trends were in agreement with the calculations based on the finite element modelling, which show a significant increase in average shear stress at higher rotational speeds. Overall, the work has demonstrated the possible effects of hydrodynamic cavitation on the quorum-sensing molecules of Pseudomonas aeruginosa for the first time. © 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.
T2  - Environmental Science and Pollution Research
T1  - Effect of hydrodynamic cavitation water treatment on Pseudomonas aeruginosa quorum-sensing molecules
VL  - 28
IS  - 20
SP  - 26182
EP  - 26186
DO  - 10.1007/s11356-021-13930-6
ER  - 

@article{
author = "Zara, Bernadett and Polgár, Máté and Sipos, György and Dóka, Gábor and Gogate, Parag and Đoković, Vladimir and Csóka, Levente",
year = "2021",
abstract = "Hydrodynamic cavitation treatment was used for the functional inactivation of quorum-sensing lactone molecules of Pseudomonas aeruginosa. Hydroxyl radicals formed as well as the shear effects during the cavitation process induced the inactivation of the signal molecules through hydrolysis reaction coupled with bacterial destruction. Concentration of two different types of homoserine lactones (HSL) molecules was tested after the treatment at various rotational speeds. It was found that the strongest effects can be achieved at speeds > 2000 rpm. This value is considered as an onset speed of dominant cavitation, and it is in agreement with literature data. The experimental trends were in agreement with the calculations based on the finite element modelling, which show a significant increase in average shear stress at higher rotational speeds. Overall, the work has demonstrated the possible effects of hydrodynamic cavitation on the quorum-sensing molecules of Pseudomonas aeruginosa for the first time. © 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.",
journal = "Environmental Science and Pollution Research",
title = "Effect of hydrodynamic cavitation water treatment on Pseudomonas aeruginosa quorum-sensing molecules",
volume = "28",
number = "20",
pages = "26182-26186",
doi = "10.1007/s11356-021-13930-6"
}

Zara, B., Polgár, M., Sipos, G., Dóka, G., Gogate, P., Đoković, V.,& Csóka, L.. (2021). Effect of hydrodynamic cavitation water treatment on Pseudomonas aeruginosa quorum-sensing molecules. in Environmental Science and Pollution Research, 28(20), 26182-26186.
https://doi.org/10.1007/s11356-021-13930-6

Zara B, Polgár M, Sipos G, Dóka G, Gogate P, Đoković V, Csóka L. Effect of hydrodynamic cavitation water treatment on Pseudomonas aeruginosa quorum-sensing molecules. in Environmental Science and Pollution Research. 2021;28(20):26182-26186.
doi:10.1007/s11356-021-13930-6 .

Zara, Bernadett, Polgár, Máté, Sipos, György, Dóka, Gábor, Gogate, Parag, Đoković, Vladimir, Csóka, Levente, "Effect of hydrodynamic cavitation water treatment on Pseudomonas aeruginosa quorum-sensing molecules" in Environmental Science and Pollution Research, 28, no. 20 (2021):26182-26186,
https://doi.org/10.1007/s11356-021-13930-6 . .

TY  - JOUR
AU  - Danilović, Danijela
AU  - Božanić, Dušan K.
AU  - Dojčilović, Radovan
AU  - Vukmirović, Nenad
AU  - Sapkota, Pitambar
AU  - Vukašinović, Ivana
AU  - Đoković, Vladimir
AU  - Bozek, John
AU  - Nicolas, Christophe
AU  - Ptasinska, Sylwia
AU  - Milosavljević, Aleksandar R.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9732
AB  - We report on the aerosol generation of ligand-free silver iodobismuthate (Ag-Bi-I) nanoparticles (NPs) and on in situ investigation of their electronic structure using synchrotron radiation soft X-ray aerosol photoelectron spectroscopy (XAPS). The structural and morphological characterizations revealed the aerosol to be composed of spherical rudorffite Ag3BiI6 particles, approximately 100 nm in size. The XAPS showed well-resolved signals from all expected elements (Ag, Bi, and I) and allowed estimation of the NP work function to be about 4.5 eV. The ionization energy of Ag3BiI6 NPs was determined to be 6.1 eV that is in good agreement with our calculations based on a hybrid functional approach. The presented method of production of Ag3BiI6 aerosol can prove beneficial for the future development of Ag-Bi-I-based photovoltaic materials, since it allows the deposition of Ag-Bi-I particles on large surface areas of arbitrary shape and roughness.
T2  - The Journal of Physical Chemistry C
T1  - Aerosol Synthesis and Gas-Phase Photoelectron Spectroscopy of Ag-Bi-I Nanosystems
VL  - 124
IS  - 43
SP  - 23930
EP  - 23937
DO  - 10.1021/acs.jpcc.0c06819
ER  - 

@article{
author = "Danilović, Danijela and Božanić, Dušan K. and Dojčilović, Radovan and Vukmirović, Nenad and Sapkota, Pitambar and Vukašinović, Ivana and Đoković, Vladimir and Bozek, John and Nicolas, Christophe and Ptasinska, Sylwia and Milosavljević, Aleksandar R.",
year = "2020",
abstract = "We report on the aerosol generation of ligand-free silver iodobismuthate (Ag-Bi-I) nanoparticles (NPs) and on in situ investigation of their electronic structure using synchrotron radiation soft X-ray aerosol photoelectron spectroscopy (XAPS). The structural and morphological characterizations revealed the aerosol to be composed of spherical rudorffite Ag3BiI6 particles, approximately 100 nm in size. The XAPS showed well-resolved signals from all expected elements (Ag, Bi, and I) and allowed estimation of the NP work function to be about 4.5 eV. The ionization energy of Ag3BiI6 NPs was determined to be 6.1 eV that is in good agreement with our calculations based on a hybrid functional approach. The presented method of production of Ag3BiI6 aerosol can prove beneficial for the future development of Ag-Bi-I-based photovoltaic materials, since it allows the deposition of Ag-Bi-I particles on large surface areas of arbitrary shape and roughness.",
journal = "The Journal of Physical Chemistry C",
title = "Aerosol Synthesis and Gas-Phase Photoelectron Spectroscopy of Ag-Bi-I Nanosystems",
volume = "124",
number = "43",
pages = "23930-23937",
doi = "10.1021/acs.jpcc.0c06819"
}

Danilović, D., Božanić, D. K., Dojčilović, R., Vukmirović, N., Sapkota, P., Vukašinović, I., Đoković, V., Bozek, J., Nicolas, C., Ptasinska, S.,& Milosavljević, A. R.. (2020). Aerosol Synthesis and Gas-Phase Photoelectron Spectroscopy of Ag-Bi-I Nanosystems. in The Journal of Physical Chemistry C, 124(43), 23930-23937.
https://doi.org/10.1021/acs.jpcc.0c06819

Danilović D, Božanić DK, Dojčilović R, Vukmirović N, Sapkota P, Vukašinović I, Đoković V, Bozek J, Nicolas C, Ptasinska S, Milosavljević AR. Aerosol Synthesis and Gas-Phase Photoelectron Spectroscopy of Ag-Bi-I Nanosystems. in The Journal of Physical Chemistry C. 2020;124(43):23930-23937.
doi:10.1021/acs.jpcc.0c06819 .

Danilović, Danijela, Božanić, Dušan K., Dojčilović, Radovan, Vukmirović, Nenad, Sapkota, Pitambar, Vukašinović, Ivana, Đoković, Vladimir, Bozek, John, Nicolas, Christophe, Ptasinska, Sylwia, Milosavljević, Aleksandar R., "Aerosol Synthesis and Gas-Phase Photoelectron Spectroscopy of Ag-Bi-I Nanosystems" in The Journal of Physical Chemistry C, 124, no. 43 (2020):23930-23937,
https://doi.org/10.1021/acs.jpcc.0c06819 . .

TY  - JOUR
AU  - Božanić, Dušan K.
AU  - Garcia, Gustavo A.
AU  - Sublemontier, Olivier
AU  - Pajović, Jelena
AU  - Đoković, Vladimir
AU  - Nahon, Laurent
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9727
AB  - We present an angle-resolved photoelectron spectroscopy study on isolated gold nanoparticles in the photon energy range between 6 and 12 eV performed at the DESIRS beamline of Synchrotron SOLEIL with a velocity map imaging spectrometer. The data are reported for polydisperse gold aerosols formed from hydrocolloids of bare and citrate-capped primary nanoparticles. The aerosols were brought to interact with the synchrotron radiation via a high-performance aerodynamic lens system developed for this study. The electronic structure of the aerosols was elucidated by threshold photoemission spectroscopy, which showed excellent agreement with the theoretical density of states. The photoionization cross sections of isolated gold particles were derived in the ∼104 to 106 Mb range between 8 and 12 eV. We introduce a new methodology to extract all of the photoemission observables from the electron images as a function of electron energy, including photoelectron spectrum, anisotropy parameter b2, and asymmetry parameter, α(E), which describes the shadowing asymmetry along the radiation propagation axis. The results show that electron energy distribution depends on the procedure used in the synthesis of the nanoparticles and on the ligand concentration. The dependence of the asymmetry parameter on electron energy along the valence band is rationalized through theoretical modeling in terms of the electric field distribution inside the particle and the losses due to inelastic scattering.
T2  - The Journal of Physical Chemistry C
T1  - Velocity Map Imaging VUV Angle-Resolved Photoemission on Isolated Nanosystems: Case of Gold Nanoparticles
VL  - 124
IS  - 44
SP  - 24500
EP  - 24512
DO  - 10.1021/acs.jpcc.0c08152
ER  - 

@article{
author = "Božanić, Dušan K. and Garcia, Gustavo A. and Sublemontier, Olivier and Pajović, Jelena and Đoković, Vladimir and Nahon, Laurent",
year = "2020",
abstract = "We present an angle-resolved photoelectron spectroscopy study on isolated gold nanoparticles in the photon energy range between 6 and 12 eV performed at the DESIRS beamline of Synchrotron SOLEIL with a velocity map imaging spectrometer. The data are reported for polydisperse gold aerosols formed from hydrocolloids of bare and citrate-capped primary nanoparticles. The aerosols were brought to interact with the synchrotron radiation via a high-performance aerodynamic lens system developed for this study. The electronic structure of the aerosols was elucidated by threshold photoemission spectroscopy, which showed excellent agreement with the theoretical density of states. The photoionization cross sections of isolated gold particles were derived in the ∼104 to 106 Mb range between 8 and 12 eV. We introduce a new methodology to extract all of the photoemission observables from the electron images as a function of electron energy, including photoelectron spectrum, anisotropy parameter b2, and asymmetry parameter, α(E), which describes the shadowing asymmetry along the radiation propagation axis. The results show that electron energy distribution depends on the procedure used in the synthesis of the nanoparticles and on the ligand concentration. The dependence of the asymmetry parameter on electron energy along the valence band is rationalized through theoretical modeling in terms of the electric field distribution inside the particle and the losses due to inelastic scattering.",
journal = "The Journal of Physical Chemistry C",
title = "Velocity Map Imaging VUV Angle-Resolved Photoemission on Isolated Nanosystems: Case of Gold Nanoparticles",
volume = "124",
number = "44",
pages = "24500-24512",
doi = "10.1021/acs.jpcc.0c08152"
}

Božanić, D. K., Garcia, G. A., Sublemontier, O., Pajović, J., Đoković, V.,& Nahon, L.. (2020). Velocity Map Imaging VUV Angle-Resolved Photoemission on Isolated Nanosystems: Case of Gold Nanoparticles. in The Journal of Physical Chemistry C, 124(44), 24500-24512.
https://doi.org/10.1021/acs.jpcc.0c08152

Božanić DK, Garcia GA, Sublemontier O, Pajović J, Đoković V, Nahon L. Velocity Map Imaging VUV Angle-Resolved Photoemission on Isolated Nanosystems: Case of Gold Nanoparticles. in The Journal of Physical Chemistry C. 2020;124(44):24500-24512.
doi:10.1021/acs.jpcc.0c08152 .

Božanić, Dušan K., Garcia, Gustavo A., Sublemontier, Olivier, Pajović, Jelena, Đoković, Vladimir, Nahon, Laurent, "Velocity Map Imaging VUV Angle-Resolved Photoemission on Isolated Nanosystems: Case of Gold Nanoparticles" in The Journal of Physical Chemistry C, 124, no. 44 (2020):24500-24512,
https://doi.org/10.1021/acs.jpcc.0c08152 . .

TY  - CONF
AU  - Dojčilović, Radovan
AU  - Pajović, J.
AU  - Božanić, Dušan K.
AU  - Jović Orsini, Nataša
AU  - Kaščakova, S.
AU  - Refregiers, M.
AU  - Đoković, Vladimir
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11866
AB  - Functional materials based on graphene oxide (GO) and reduced graphene oxide (rGO) have a high potential for application in the fields of biophysics, material science, and biomedical engineering [1]. It is due to their tunable physical properties, high surface area, remarkable photoluminescence, as well as their controllable chemical functionalization [2]. Beyond their applications in nanomedicine for drug/gene delivery, phototherapy and bioimaging, they have shown significant interaction and adhesive properties with proteins, mammalian cells and microorganisms, which makes them potential candidates for multifunctional biological applications. In this lecture, we will present a study of the interaction of partially reduced graphene oxide (prGO) with Huh7.5.1 liver cancer cells. The study was conducted by means of synchrotron excitation DUV fluorescence bioimaging (performed on DISCO beamline of synchrotron SOLEIL) [3]. The prGO sample was obtained by the reduction (to a certain extent) of the initially prepared GO nanosheets. The fluorescence of the GO nanosheets increases with time of the reduction due to a change in the ratio of the sp2 and sp3 carbon sites, and the prGO sample was extracted from the dispersion when the intensity of the fluorescence reached its maximum. After that, Huh7.5.1 cells were incubated with GO, prGO and rGO nanosheets and used in bioimaging studies. The presence of graphene materials influenced the fluorescence properties of the cells, and by analyzing fluorescence photobleaching dynamics, we were able to localize graphene nanosheets inside the liver cancer cells.
PB  - Belgrade : Vinča Institute of Nuclear Sciences, University of Belgrade
C3  - PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts
T1  - Bioimaging of liver cancer cells incubated with partially reduced graphene oxide
SP  - 43
EP  - 43
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11866
ER  - 

@conference{
author = "Dojčilović, Radovan and Pajović, J. and Božanić, Dušan K. and Jović Orsini, Nataša and Kaščakova, S. and Refregiers, M. and Đoković, Vladimir",
year = "2019",
abstract = "Functional materials based on graphene oxide (GO) and reduced graphene oxide (rGO) have a high potential for application in the fields of biophysics, material science, and biomedical engineering [1]. It is due to their tunable physical properties, high surface area, remarkable photoluminescence, as well as their controllable chemical functionalization [2]. Beyond their applications in nanomedicine for drug/gene delivery, phototherapy and bioimaging, they have shown significant interaction and adhesive properties with proteins, mammalian cells and microorganisms, which makes them potential candidates for multifunctional biological applications. In this lecture, we will present a study of the interaction of partially reduced graphene oxide (prGO) with Huh7.5.1 liver cancer cells. The study was conducted by means of synchrotron excitation DUV fluorescence bioimaging (performed on DISCO beamline of synchrotron SOLEIL) [3]. The prGO sample was obtained by the reduction (to a certain extent) of the initially prepared GO nanosheets. The fluorescence of the GO nanosheets increases with time of the reduction due to a change in the ratio of the sp2 and sp3 carbon sites, and the prGO sample was extracted from the dispersion when the intensity of the fluorescence reached its maximum. After that, Huh7.5.1 cells were incubated with GO, prGO and rGO nanosheets and used in bioimaging studies. The presence of graphene materials influenced the fluorescence properties of the cells, and by analyzing fluorescence photobleaching dynamics, we were able to localize graphene nanosheets inside the liver cancer cells.",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences, University of Belgrade",
journal = "PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts",
title = "Bioimaging of liver cancer cells incubated with partially reduced graphene oxide",
pages = "43-43",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11866"
}

Dojčilović, R., Pajović, J., Božanić, D. K., Jović Orsini, N., Kaščakova, S., Refregiers, M.,& Đoković, V.. (2019). Bioimaging of liver cancer cells incubated with partially reduced graphene oxide. in PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts
Belgrade : Vinča Institute of Nuclear Sciences, University of Belgrade., 43-43.
https://hdl.handle.net/21.15107/rcub_vinar_11866

Dojčilović R, Pajović J, Božanić DK, Jović Orsini N, Kaščakova S, Refregiers M, Đoković V. Bioimaging of liver cancer cells incubated with partially reduced graphene oxide. in PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts. 2019;:43-43.
https://hdl.handle.net/21.15107/rcub_vinar_11866 .

Dojčilović, Radovan, Pajović, J., Božanić, Dušan K., Jović Orsini, Nataša, Kaščakova, S., Refregiers, M., Đoković, Vladimir, "Bioimaging of liver cancer cells incubated with partially reduced graphene oxide" in PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts (2019):43-43,
https://hdl.handle.net/21.15107/rcub_vinar_11866 .

TY  - CONF
AU  - Božanić, Dušan K.
AU  - Garcia Macias, G.
AU  - Nahon, Laurent
AU  - Dojčilović, Radovan
AU  - Pajović, J.
AU  - Đoković, Vladimir
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11868
AB  - Aerosol photoemission spectroscopy became an important method for studying electronic structure of submicrometer particles without the influence of substrate [1]. It comprises irradiation of the focused particle beam by either vacuum-ultraviolet (VUV) or soft x-ray radiation under high vacuum conditions and subsequent detection and discrimination of the photoelectrons according to their kinetic energies and momenta [2-4]. As intermediates between atoms or molecules and macroscopic matter, nanometer-sized objects exhibit specific electronic and transport properties that strongly depend on their size, morphology and surface chemistry. Modification of nanoparticle surfaces by conjugation with molecules presents a convenient method of altering a wide range of physicochemical characteristics of the nanomaterials, which does not require development of new synthetic procedures. Furthermore, by a proper choice of molecules used in surface modification, additional properties of the hybrid nanostructures can be achieved, which could not be found in the starting materials. In this lecture, we will present the selected results of our investigations on hybrid nanostructures comprised of noble metal and metal oxide nanomaterials functionalized by biologically relevant molecules. Particular attention will be given to the vacuum-ultraviolet angle-resolved photoelectron spectroscopy (VUV ARPES) studies on isolated functionalized nanosystems performed at the DESIRS beamline. The emergence of the photoelectron circular dichroism in hybrid nanoparticles will be briefly discussed.
PB  - Belgrade : Vinča Institute of Nuclear Sciences, University of Belgrade
C3  - PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts
T1  - VUV Angle-resolved Photoelectron Spectroscopy on Isolated Hybrid Nanostructures
SP  - 63
EP  - 63
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11868
ER  - 

@conference{
author = "Božanić, Dušan K. and Garcia Macias, G. and Nahon, Laurent and Dojčilović, Radovan and Pajović, J. and Đoković, Vladimir",
year = "2019",
abstract = "Aerosol photoemission spectroscopy became an important method for studying electronic structure of submicrometer particles without the influence of substrate [1]. It comprises irradiation of the focused particle beam by either vacuum-ultraviolet (VUV) or soft x-ray radiation under high vacuum conditions and subsequent detection and discrimination of the photoelectrons according to their kinetic energies and momenta [2-4]. As intermediates between atoms or molecules and macroscopic matter, nanometer-sized objects exhibit specific electronic and transport properties that strongly depend on their size, morphology and surface chemistry. Modification of nanoparticle surfaces by conjugation with molecules presents a convenient method of altering a wide range of physicochemical characteristics of the nanomaterials, which does not require development of new synthetic procedures. Furthermore, by a proper choice of molecules used in surface modification, additional properties of the hybrid nanostructures can be achieved, which could not be found in the starting materials. In this lecture, we will present the selected results of our investigations on hybrid nanostructures comprised of noble metal and metal oxide nanomaterials functionalized by biologically relevant molecules. Particular attention will be given to the vacuum-ultraviolet angle-resolved photoelectron spectroscopy (VUV ARPES) studies on isolated functionalized nanosystems performed at the DESIRS beamline. The emergence of the photoelectron circular dichroism in hybrid nanoparticles will be briefly discussed.",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences, University of Belgrade",
journal = "PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts",
title = "VUV Angle-resolved Photoelectron Spectroscopy on Isolated Hybrid Nanostructures",
pages = "63-63",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11868"
}

Božanić, D. K., Garcia Macias, G., Nahon, L., Dojčilović, R., Pajović, J.,& Đoković, V.. (2019). VUV Angle-resolved Photoelectron Spectroscopy on Isolated Hybrid Nanostructures. in PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts
Belgrade : Vinča Institute of Nuclear Sciences, University of Belgrade., 63-63.
https://hdl.handle.net/21.15107/rcub_vinar_11868

Božanić DK, Garcia Macias G, Nahon L, Dojčilović R, Pajović J, Đoković V. VUV Angle-resolved Photoelectron Spectroscopy on Isolated Hybrid Nanostructures. in PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts. 2019;:63-63.
https://hdl.handle.net/21.15107/rcub_vinar_11868 .

Božanić, Dušan K., Garcia Macias, G., Nahon, Laurent, Dojčilović, Radovan, Pajović, J., Đoković, Vladimir, "VUV Angle-resolved Photoelectron Spectroscopy on Isolated Hybrid Nanostructures" in PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts (2019):63-63,
https://hdl.handle.net/21.15107/rcub_vinar_11868 .

TY  - JOUR
AU  - Dojčilović, Radovan
AU  - Pajović, Jelena D.
AU  - Božanić, Dušan K.
AU  - Jović, Nataša G.
AU  - Pavlović, Vera P.
AU  - Pavlović, Vladimir B.
AU  - Lenhardt Acković, Lea
AU  - Zeković, Ivana Lj.
AU  - Dramićanin, Miroslav
AU  - Kaščakova, Slavka
AU  - Refregiers, Matthieu
AU  - Rašić, Goran
AU  - Vlahović, Branislav
AU  - Đoković, Vladimir
PY  - 2018
UR  - http://stacks.iop.org/2053-1583/5/i=4/a=045019?key=crossref.f455f07bdfb3469c8077963ff0f38f95
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7909
AB  - The interaction of partially reduced graphene oxide (prGO) and Huh7.5.1 liver cancer cells was investigated by means of DUV fluorescence bioimaging. The prGO sample was obtained by the reduction (to a certain extent) of the initially prepared graphene oxide (GO) nanosheets with hydrazine. The fluorescence of the GO nanosheets increases with time of the reduction due to a change in ratio of the sp2 and sp3 carbon sites and the prGO sample was extracted from the dispersion after 6 min, when the intensity of the fluorescence reached its maximum. The reduction process was left to proceed further to saturation until highly reduced graphene oxide (denoted here as rGO) was obtained. GO, prGO and rGO samples were investigated by structural (scanning electron microscopy (SEM), scanning transmission electron microscopy coupled with energy dispersive spectrometry (STEM-EDS)) and spectroscopic (UV-vis, photoluminescence (PL), Raman) methods. After that, Huh7.5.1 cells were incubated with GO, prGO and rGO nanosheets and used in bioimaging studies, which were performed on DISCO beamline of synchrotron SOLEIL. It was found that the prGO significantly enhanced the fluorescence of the cells and increased the intensity of the signal by ~2.5 times. Time-lapse fluorescence microscopy experiments showed that fluorescence dynamics strongly depends on the type of nanosheets used. The obtained prGO nanostructure can be easily conjugated with aromatic ring containing drugs, which opens a possibility for its applications in fluorescence microscopy monitored drug delivery. © 2018 IOP Publishing Ltd.
T2  - 2D Materials
T1  - DUV fluorescence bioimaging study of the interaction of partially reduced graphene oxide and liver cancer cells
VL  - 5
IS  - 4
SP  - 045019
DO  - 10.1088/2053-1583/aad72b
ER  - 

@article{
author = "Dojčilović, Radovan and Pajović, Jelena D. and Božanić, Dušan K. and Jović, Nataša G. and Pavlović, Vera P. and Pavlović, Vladimir B. and Lenhardt Acković, Lea and Zeković, Ivana Lj. and Dramićanin, Miroslav and Kaščakova, Slavka and Refregiers, Matthieu and Rašić, Goran and Vlahović, Branislav and Đoković, Vladimir",
year = "2018",
abstract = "The interaction of partially reduced graphene oxide (prGO) and Huh7.5.1 liver cancer cells was investigated by means of DUV fluorescence bioimaging. The prGO sample was obtained by the reduction (to a certain extent) of the initially prepared graphene oxide (GO) nanosheets with hydrazine. The fluorescence of the GO nanosheets increases with time of the reduction due to a change in ratio of the sp2 and sp3 carbon sites and the prGO sample was extracted from the dispersion after 6 min, when the intensity of the fluorescence reached its maximum. The reduction process was left to proceed further to saturation until highly reduced graphene oxide (denoted here as rGO) was obtained. GO, prGO and rGO samples were investigated by structural (scanning electron microscopy (SEM), scanning transmission electron microscopy coupled with energy dispersive spectrometry (STEM-EDS)) and spectroscopic (UV-vis, photoluminescence (PL), Raman) methods. After that, Huh7.5.1 cells were incubated with GO, prGO and rGO nanosheets and used in bioimaging studies, which were performed on DISCO beamline of synchrotron SOLEIL. It was found that the prGO significantly enhanced the fluorescence of the cells and increased the intensity of the signal by ~2.5 times. Time-lapse fluorescence microscopy experiments showed that fluorescence dynamics strongly depends on the type of nanosheets used. The obtained prGO nanostructure can be easily conjugated with aromatic ring containing drugs, which opens a possibility for its applications in fluorescence microscopy monitored drug delivery. © 2018 IOP Publishing Ltd.",
journal = "2D Materials",
title = "DUV fluorescence bioimaging study of the interaction of partially reduced graphene oxide and liver cancer cells",
volume = "5",
number = "4",
pages = "045019",
doi = "10.1088/2053-1583/aad72b"
}

Dojčilović, R., Pajović, J. D., Božanić, D. K., Jović, N. G., Pavlović, V. P., Pavlović, V. B., Lenhardt Acković, L., Zeković, I. Lj., Dramićanin, M., Kaščakova, S., Refregiers, M., Rašić, G., Vlahović, B.,& Đoković, V.. (2018). DUV fluorescence bioimaging study of the interaction of partially reduced graphene oxide and liver cancer cells. in 2D Materials, 5(4), 045019.
https://doi.org/10.1088/2053-1583/aad72b

Dojčilović R, Pajović JD, Božanić DK, Jović NG, Pavlović VP, Pavlović VB, Lenhardt Acković L, Zeković IL, Dramićanin M, Kaščakova S, Refregiers M, Rašić G, Vlahović B, Đoković V. DUV fluorescence bioimaging study of the interaction of partially reduced graphene oxide and liver cancer cells. in 2D Materials. 2018;5(4):045019.
doi:10.1088/2053-1583/aad72b .

Dojčilović, Radovan, Pajović, Jelena D., Božanić, Dušan K., Jović, Nataša G., Pavlović, Vera P., Pavlović, Vladimir B., Lenhardt Acković, Lea, Zeković, Ivana Lj., Dramićanin, Miroslav, Kaščakova, Slavka, Refregiers, Matthieu, Rašić, Goran, Vlahović, Branislav, Đoković, Vladimir, "DUV fluorescence bioimaging study of the interaction of partially reduced graphene oxide and liver cancer cells" in 2D Materials, 5, no. 4 (2018):045019,
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TY  - JOUR
AU  - Hosakun, Worakan
AU  - Hosakun, Yanin
AU  - Dudić, Duško
AU  - Đoković, Vladimir
AU  - Csoka, Levente
PY  - 2018
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0142941818311358
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7864
AB  - Flexible and transparent substrate materials were fabricated by using bacterial cellulose (BC), silk fibroin protein (SF) and/or polyvinyl alcohol (PVA). The BC-SF and BC-SF-PVA films obtained were further modified by impregnation with silver nanocubes (AgNC). The influences of the silver nanocubes and white light illumination on the electric and viscoelastic properties of the films were investigated. Complex conductivity measurements showed that the films with PVA component are more sensitive to light exposure and there is an increase in conductance when the sample is illuminated. The films that contained silver nanocubes showed higher values of specific susceptance than their unmodified counterparts. DMA analyses revealed that the storage shear moduli of the films increase with addition of silver nanocubes. It was also found that the relaxation transition observed at elevated temperatures in the BC-SF-PVA-AgNC films is highly sensitive to the light exposure. Above the glass transition of PVA, both storage- and loss-shear moduli change dramatically if the sample is illuminated during the measurements with respect to the case when it was kept in the dark. © 2018
T2  - Polymer Testing
T1  - Dependence of mechanical and electrical properties of silver nanocubes impregnated bacterial cellulose-silk fibroin-polyvinyl alcohol films on light exposure
VL  - 71
SP  - 110
EP  - 114
DO  - 10.1016/j.polymertesting.2018.08.031
ER  - 

@article{
author = "Hosakun, Worakan and Hosakun, Yanin and Dudić, Duško and Đoković, Vladimir and Csoka, Levente",
year = "2018",
abstract = "Flexible and transparent substrate materials were fabricated by using bacterial cellulose (BC), silk fibroin protein (SF) and/or polyvinyl alcohol (PVA). The BC-SF and BC-SF-PVA films obtained were further modified by impregnation with silver nanocubes (AgNC). The influences of the silver nanocubes and white light illumination on the electric and viscoelastic properties of the films were investigated. Complex conductivity measurements showed that the films with PVA component are more sensitive to light exposure and there is an increase in conductance when the sample is illuminated. The films that contained silver nanocubes showed higher values of specific susceptance than their unmodified counterparts. DMA analyses revealed that the storage shear moduli of the films increase with addition of silver nanocubes. It was also found that the relaxation transition observed at elevated temperatures in the BC-SF-PVA-AgNC films is highly sensitive to the light exposure. Above the glass transition of PVA, both storage- and loss-shear moduli change dramatically if the sample is illuminated during the measurements with respect to the case when it was kept in the dark. © 2018",
journal = "Polymer Testing",
title = "Dependence of mechanical and electrical properties of silver nanocubes impregnated bacterial cellulose-silk fibroin-polyvinyl alcohol films on light exposure",
volume = "71",
pages = "110-114",
doi = "10.1016/j.polymertesting.2018.08.031"
}

Hosakun, W., Hosakun, Y., Dudić, D., Đoković, V.,& Csoka, L.. (2018). Dependence of mechanical and electrical properties of silver nanocubes impregnated bacterial cellulose-silk fibroin-polyvinyl alcohol films on light exposure. in Polymer Testing, 71, 110-114.
https://doi.org/10.1016/j.polymertesting.2018.08.031

Hosakun W, Hosakun Y, Dudić D, Đoković V, Csoka L. Dependence of mechanical and electrical properties of silver nanocubes impregnated bacterial cellulose-silk fibroin-polyvinyl alcohol films on light exposure. in Polymer Testing. 2018;71:110-114.
doi:10.1016/j.polymertesting.2018.08.031 .

Hosakun, Worakan, Hosakun, Yanin, Dudić, Duško, Đoković, Vladimir, Csoka, Levente, "Dependence of mechanical and electrical properties of silver nanocubes impregnated bacterial cellulose-silk fibroin-polyvinyl alcohol films on light exposure" in Polymer Testing, 71 (2018):110-114,
https://doi.org/10.1016/j.polymertesting.2018.08.031 . .