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  - 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 .