Bogdanović, Una

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  • Bogdanović, Una (15)

Author's Bibliography

Metal nanoparticles and their composites: a promising multifunctional nanomaterial for biomedical and related applications

Vodnik, Vesna; Bogdanović, Una

(Elsevier, 2019)

TY  - CHAP
AU  - Vodnik, Vesna
AU  - Bogdanović, Una
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8850
AB  - The past few years have witnessed the tremendous potential and development of metal nanoparticles due to their strong optical absorption and scattering, an effect called localized surface plasmon resonance, which makes them useful in a wide spectrum of biomedical utilities such as imaging, sensing, drug delivery, gene targeting, and treatment of some cancers. This chapter highlights the Au, Ag, and Cu nanoparticles currently investigated in the field of health and medicine, focusing on individual and particularly polymer/organic molecule-functionalized nanoparticles-which is often employed to prevent them from agglomeration and oxidation, as well as for biofunctionalization. An overview of the synthesis, properties, and surface modifications of these nanomaterials, with particular attention to their challenges and perspectives for relevant biomedical applications, is provided. In addition to the citation of some recent advances in biomedicine, we draw attention to our study on these nanosystems that have biological or other related applications. © 2019 Elsevier Ltd. All rights reserved.
PB  - Elsevier
T2  - Materials for biomedical engineering: Inorganic micro and nanostructures
T1  - Metal nanoparticles and their composites: a promising multifunctional nanomaterial for biomedical and related applications
SP  - 397
EP  - 426
DO  - 10.1016/B978-0-08-102814-8.00014-7
ER  - 
@inbook{
author = "Vodnik, Vesna and Bogdanović, Una",
year = "2019",
abstract = "The past few years have witnessed the tremendous potential and development of metal nanoparticles due to their strong optical absorption and scattering, an effect called localized surface plasmon resonance, which makes them useful in a wide spectrum of biomedical utilities such as imaging, sensing, drug delivery, gene targeting, and treatment of some cancers. This chapter highlights the Au, Ag, and Cu nanoparticles currently investigated in the field of health and medicine, focusing on individual and particularly polymer/organic molecule-functionalized nanoparticles-which is often employed to prevent them from agglomeration and oxidation, as well as for biofunctionalization. An overview of the synthesis, properties, and surface modifications of these nanomaterials, with particular attention to their challenges and perspectives for relevant biomedical applications, is provided. In addition to the citation of some recent advances in biomedicine, we draw attention to our study on these nanosystems that have biological or other related applications. © 2019 Elsevier Ltd. All rights reserved.",
publisher = "Elsevier",
journal = "Materials for biomedical engineering: Inorganic micro and nanostructures",
booktitle = "Metal nanoparticles and their composites: a promising multifunctional nanomaterial for biomedical and related applications",
pages = "397-426",
doi = "10.1016/B978-0-08-102814-8.00014-7"
}
Vodnik, V.,& Bogdanović, U.. (2019). Metal nanoparticles and their composites: a promising multifunctional nanomaterial for biomedical and related applications. in Materials for biomedical engineering: Inorganic micro and nanostructures
Elsevier., 397-426.
https://doi.org/10.1016/B978-0-08-102814-8.00014-7
Vodnik V, Bogdanović U. Metal nanoparticles and their composites: a promising multifunctional nanomaterial for biomedical and related applications. in Materials for biomedical engineering: Inorganic micro and nanostructures. 2019;:397-426.
doi:10.1016/B978-0-08-102814-8.00014-7 .
Vodnik, Vesna, Bogdanović, Una, "Metal nanoparticles and their composites: a promising multifunctional nanomaterial for biomedical and related applications" in Materials for biomedical engineering: Inorganic micro and nanostructures (2019):397-426,
https://doi.org/10.1016/B978-0-08-102814-8.00014-7 . .
1
1

Nanospectroscopy of thiacyanine dye molecules adsorbed on silver nanoparticle clusters

Ralević, Uroš; Isic, Goran; Vasić Anićijević, Dragana D.; Laban, Bojana B.; Bogdanović, Una; Lazović, Vladimir M.; Vodnik, Vesna; Gajic, Rados

(2018)

TY  - JOUR
AU  - Ralević, Uroš
AU  - Isic, Goran
AU  - Vasić Anićijević, Dragana D.
AU  - Laban, Bojana B.
AU  - Bogdanović, Una
AU  - Lazović, Vladimir M.
AU  - Vodnik, Vesna
AU  - Gajic, Rados
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1890
AB  - The adsorption of thiacyanine dye molecules on citrate-stabilized silver nanoparticle clusters drop-cast onto freshly cleaved mica or highly oriented pyrolytic graphite surfaces is examined using colocalized surface-enhanced Raman spectroscopy and atomic force microscopy. The incidence of dye Raman signatures in photoluminescence hotspots identified around nanoparticle clusters is considered for both citrate- and borate-capped silver nanoparticles and found to be substantially lower in the former case, suggesting that the citrate anions impede the efficient dye adsorption. Rigorous numerical simulations of light scattering on random nanoparticle clusters are used for estimating the electromagnetic enhancement and elucidating the hotspot formation mechanism. The majority of the enhanced Raman signal, estimated to be more than 90%, is found to originate from the nanogaps between adjacent nanoparticles in the cluster, regardless of the cluster size and geometry. (C) 2017 Elsevier B.V. All rights reserved.
T2  - Applied Surface Science
T1  - Nanospectroscopy of thiacyanine dye molecules adsorbed on silver nanoparticle clusters
VL  - 434
SP  - 540
EP  - 548
DO  - 10.1016/j.apsusc.2017.10.148
ER  - 
@article{
author = "Ralević, Uroš and Isic, Goran and Vasić Anićijević, Dragana D. and Laban, Bojana B. and Bogdanović, Una and Lazović, Vladimir M. and Vodnik, Vesna and Gajic, Rados",
year = "2018",
abstract = "The adsorption of thiacyanine dye molecules on citrate-stabilized silver nanoparticle clusters drop-cast onto freshly cleaved mica or highly oriented pyrolytic graphite surfaces is examined using colocalized surface-enhanced Raman spectroscopy and atomic force microscopy. The incidence of dye Raman signatures in photoluminescence hotspots identified around nanoparticle clusters is considered for both citrate- and borate-capped silver nanoparticles and found to be substantially lower in the former case, suggesting that the citrate anions impede the efficient dye adsorption. Rigorous numerical simulations of light scattering on random nanoparticle clusters are used for estimating the electromagnetic enhancement and elucidating the hotspot formation mechanism. The majority of the enhanced Raman signal, estimated to be more than 90%, is found to originate from the nanogaps between adjacent nanoparticles in the cluster, regardless of the cluster size and geometry. (C) 2017 Elsevier B.V. All rights reserved.",
journal = "Applied Surface Science",
title = "Nanospectroscopy of thiacyanine dye molecules adsorbed on silver nanoparticle clusters",
volume = "434",
pages = "540-548",
doi = "10.1016/j.apsusc.2017.10.148"
}
Ralević, U., Isic, G., Vasić Anićijević, D. D., Laban, B. B., Bogdanović, U., Lazović, V. M., Vodnik, V.,& Gajic, R.. (2018). Nanospectroscopy of thiacyanine dye molecules adsorbed on silver nanoparticle clusters. in Applied Surface Science, 434, 540-548.
https://doi.org/10.1016/j.apsusc.2017.10.148
Ralević U, Isic G, Vasić Anićijević DD, Laban BB, Bogdanović U, Lazović VM, Vodnik V, Gajic R. Nanospectroscopy of thiacyanine dye molecules adsorbed on silver nanoparticle clusters. in Applied Surface Science. 2018;434:540-548.
doi:10.1016/j.apsusc.2017.10.148 .
Ralević, Uroš, Isic, Goran, Vasić Anićijević, Dragana D., Laban, Bojana B., Bogdanović, Una, Lazović, Vladimir M., Vodnik, Vesna, Gajic, Rados, "Nanospectroscopy of thiacyanine dye molecules adsorbed on silver nanoparticle clusters" in Applied Surface Science, 434 (2018):540-548,
https://doi.org/10.1016/j.apsusc.2017.10.148 . .
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Copper-polyaniline nanocomposite: Role of physicochemical properties on the antimicrobial activity and genotoxicity evaluation

Bogdanović, Una; Dimitrijević, Suzana I.; Škapin, Srečo Davor; Popović, Maja; Rakočević, Zlatko Lj.; Leskovac, Andreja; Petrović, Sandra; Stoiljković, Milovan; Vodnik, Vesna

(2018)

TY  - JOUR
AU  - Bogdanović, Una
AU  - Dimitrijević, Suzana I.
AU  - Škapin, Srečo Davor
AU  - Popović, Maja
AU  - Rakočević, Zlatko Lj.
AU  - Leskovac, Andreja
AU  - Petrović, Sandra
AU  - Stoiljković, Milovan
AU  - Vodnik, Vesna
PY  - 2018
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0928493117326449
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7799
AB  - Copper nanoparticles (Cu NPs) have proven to own excellent antimicrobial efficacy, but the problems of easy oxidation and aggregation limit their practical application. Here, nanocomposite based on polyaniline (PANI) and Cu NPs solved this problem and brought additional physicochemical properties that are markedly advantageous for antimicrobial applications. Current work exploits this potential, to examine its time- and concentration-dependent antimicrobial activity, employing E. coli, S. aureus, and C. albicans as a model microbial species. Regarding the presence of polaronic charge carriers in the fibrous polyaniline network, effects of Cu NPs’ size and their partially oxidized surfaces (the data were confirmed by HRTEM, FESEM, XRD, Raman and XPS analysis), as well as rapid copper ions release, Cu-PANI nanocomposite showed efficient bactericidal and fungicidal activities at the concentrations ≤1 ppm, within the incubation time of 2 h. Beside the quantitative analysis, the high levels of cellular disruption for all tested microbes were evidenced by atomic force microscopy. Moreover, the minimum inhibitory and bactericidal concentrations of the Cu-PANI nanocomposite were lower than those reported for other nanocomposites. Using such low concentrations is recognized as a good way to avoid its toxicity toward the environment. For this purpose, Cu-PANI nanocomposite is tested for its genotoxicity and influence on the oxidative status of the human cells in vitro.
T2  - Materials Science and Engineering: C
T1  - Copper-polyaniline nanocomposite: Role of physicochemical properties on the antimicrobial activity and genotoxicity evaluation
VL  - 93
SP  - 49
EP  - 60
DO  - 10.1016/j.msec.2018.07.067
ER  - 
@article{
author = "Bogdanović, Una and Dimitrijević, Suzana I. and Škapin, Srečo Davor and Popović, Maja and Rakočević, Zlatko Lj. and Leskovac, Andreja and Petrović, Sandra and Stoiljković, Milovan and Vodnik, Vesna",
year = "2018",
abstract = "Copper nanoparticles (Cu NPs) have proven to own excellent antimicrobial efficacy, but the problems of easy oxidation and aggregation limit their practical application. Here, nanocomposite based on polyaniline (PANI) and Cu NPs solved this problem and brought additional physicochemical properties that are markedly advantageous for antimicrobial applications. Current work exploits this potential, to examine its time- and concentration-dependent antimicrobial activity, employing E. coli, S. aureus, and C. albicans as a model microbial species. Regarding the presence of polaronic charge carriers in the fibrous polyaniline network, effects of Cu NPs’ size and their partially oxidized surfaces (the data were confirmed by HRTEM, FESEM, XRD, Raman and XPS analysis), as well as rapid copper ions release, Cu-PANI nanocomposite showed efficient bactericidal and fungicidal activities at the concentrations ≤1 ppm, within the incubation time of 2 h. Beside the quantitative analysis, the high levels of cellular disruption for all tested microbes were evidenced by atomic force microscopy. Moreover, the minimum inhibitory and bactericidal concentrations of the Cu-PANI nanocomposite were lower than those reported for other nanocomposites. Using such low concentrations is recognized as a good way to avoid its toxicity toward the environment. For this purpose, Cu-PANI nanocomposite is tested for its genotoxicity and influence on the oxidative status of the human cells in vitro.",
journal = "Materials Science and Engineering: C",
title = "Copper-polyaniline nanocomposite: Role of physicochemical properties on the antimicrobial activity and genotoxicity evaluation",
volume = "93",
pages = "49-60",
doi = "10.1016/j.msec.2018.07.067"
}
Bogdanović, U., Dimitrijević, S. I., Škapin, S. D., Popović, M., Rakočević, Z. Lj., Leskovac, A., Petrović, S., Stoiljković, M.,& Vodnik, V.. (2018). Copper-polyaniline nanocomposite: Role of physicochemical properties on the antimicrobial activity and genotoxicity evaluation. in Materials Science and Engineering: C, 93, 49-60.
https://doi.org/10.1016/j.msec.2018.07.067
Bogdanović U, Dimitrijević SI, Škapin SD, Popović M, Rakočević ZL, Leskovac A, Petrović S, Stoiljković M, Vodnik V. Copper-polyaniline nanocomposite: Role of physicochemical properties on the antimicrobial activity and genotoxicity evaluation. in Materials Science and Engineering: C. 2018;93:49-60.
doi:10.1016/j.msec.2018.07.067 .
Bogdanović, Una, Dimitrijević, Suzana I., Škapin, Srečo Davor, Popović, Maja, Rakočević, Zlatko Lj., Leskovac, Andreja, Petrović, Sandra, Stoiljković, Milovan, Vodnik, Vesna, "Copper-polyaniline nanocomposite: Role of physicochemical properties on the antimicrobial activity and genotoxicity evaluation" in Materials Science and Engineering: C, 93 (2018):49-60,
https://doi.org/10.1016/j.msec.2018.07.067 . .
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Interaction of amino acid-functionalized silver nanoparticles and Candida albicans polymorphs: A deep-UV fluorescence imaging study

Dojčilović, Radovan; Pajović, Jelena D.; Božanić, Dušan K.; Bogdanović, Una; Vodnik, Vesna; Dimitrijević-Branković, Suzana I.; Miljković, Miona G.; Kascakova, Slavka; Refregiers, Matthieu; Đoković, Vladimir

(2017)

TY  - JOUR
AU  - Dojčilović, Radovan
AU  - Pajović, Jelena D.
AU  - Božanić, Dušan K.
AU  - Bogdanović, Una
AU  - Vodnik, Vesna
AU  - Dimitrijević-Branković, Suzana I.
AU  - Miljković, Miona G.
AU  - Kascakova, Slavka
AU  - Refregiers, Matthieu
AU  - Đoković, Vladimir
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1608
AB  - The interaction of the tryptophan functionalized Ag nanoparticles and live Candida albicans cells was studied by synchrotron excitation deep-ultraviolet (DUV) fluorescence imaging at the DISCO beamline of Synchrotron SOLEIL. DUV imaging showed that incubation of the fungus with functionalized nanoparticles results in significant increase in the fluorescence signal. The analysis of the images revealed that the interaction of the nanoparticles with (pseudo)hyphae polymorphs of the diploid fungus was less pronounced than in the case of yeast cells or budding spores. The changes in the intensity of the fluorescence signals of the cells after incubation were followed in [327-353 nm] and [370-410 nm] spectral ranges that correspond to the fluorescence of tryptophan in non-polar and polar environment, respectively. As a consequence of the environmental sensitivity of the silver-tryptophan fluorescent nanoprobe, we were able to determine the possible accumulation sites of the nanoparticles. The analysis of the intensity decay kinetics showed that the photobleaching effects were more pronounced in the case of the functionalized nanoparticle treated cells. The results of time-integrated emission in the mentioned spectral ranges suggested that the nanoparticles penetrate the cells, but that the majority of the nanoparticles attach to the cells surfaces. (C) 2017 Elsevier B.V. All rights reserved.
T2  - Colloids and Surfaces. B: Biointerfaces
T1  - Interaction of amino acid-functionalized silver nanoparticles and Candida albicans polymorphs: A deep-UV fluorescence imaging study
VL  - 155
SP  - 341
EP  - 348
DO  - 10.1016/j.colsurfb.2017.04.044
ER  - 
@article{
author = "Dojčilović, Radovan and Pajović, Jelena D. and Božanić, Dušan K. and Bogdanović, Una and Vodnik, Vesna and Dimitrijević-Branković, Suzana I. and Miljković, Miona G. and Kascakova, Slavka and Refregiers, Matthieu and Đoković, Vladimir",
year = "2017",
abstract = "The interaction of the tryptophan functionalized Ag nanoparticles and live Candida albicans cells was studied by synchrotron excitation deep-ultraviolet (DUV) fluorescence imaging at the DISCO beamline of Synchrotron SOLEIL. DUV imaging showed that incubation of the fungus with functionalized nanoparticles results in significant increase in the fluorescence signal. The analysis of the images revealed that the interaction of the nanoparticles with (pseudo)hyphae polymorphs of the diploid fungus was less pronounced than in the case of yeast cells or budding spores. The changes in the intensity of the fluorescence signals of the cells after incubation were followed in [327-353 nm] and [370-410 nm] spectral ranges that correspond to the fluorescence of tryptophan in non-polar and polar environment, respectively. As a consequence of the environmental sensitivity of the silver-tryptophan fluorescent nanoprobe, we were able to determine the possible accumulation sites of the nanoparticles. The analysis of the intensity decay kinetics showed that the photobleaching effects were more pronounced in the case of the functionalized nanoparticle treated cells. The results of time-integrated emission in the mentioned spectral ranges suggested that the nanoparticles penetrate the cells, but that the majority of the nanoparticles attach to the cells surfaces. (C) 2017 Elsevier B.V. All rights reserved.",
journal = "Colloids and Surfaces. B: Biointerfaces",
title = "Interaction of amino acid-functionalized silver nanoparticles and Candida albicans polymorphs: A deep-UV fluorescence imaging study",
volume = "155",
pages = "341-348",
doi = "10.1016/j.colsurfb.2017.04.044"
}
Dojčilović, R., Pajović, J. D., Božanić, D. K., Bogdanović, U., Vodnik, V., Dimitrijević-Branković, S. I., Miljković, M. G., Kascakova, S., Refregiers, M.,& Đoković, V.. (2017). Interaction of amino acid-functionalized silver nanoparticles and Candida albicans polymorphs: A deep-UV fluorescence imaging study. in Colloids and Surfaces. B: Biointerfaces, 155, 341-348.
https://doi.org/10.1016/j.colsurfb.2017.04.044
Dojčilović R, Pajović JD, Božanić DK, Bogdanović U, Vodnik V, Dimitrijević-Branković SI, Miljković MG, Kascakova S, Refregiers M, Đoković V. Interaction of amino acid-functionalized silver nanoparticles and Candida albicans polymorphs: A deep-UV fluorescence imaging study. in Colloids and Surfaces. B: Biointerfaces. 2017;155:341-348.
doi:10.1016/j.colsurfb.2017.04.044 .
Dojčilović, Radovan, Pajović, Jelena D., Božanić, Dušan K., Bogdanović, Una, Vodnik, Vesna, Dimitrijević-Branković, Suzana I., Miljković, Miona G., Kascakova, Slavka, Refregiers, Matthieu, Đoković, Vladimir, "Interaction of amino acid-functionalized silver nanoparticles and Candida albicans polymorphs: A deep-UV fluorescence imaging study" in Colloids and Surfaces. B: Biointerfaces, 155 (2017):341-348,
https://doi.org/10.1016/j.colsurfb.2017.04.044 . .
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Sinteza, karakterizacija i primena nanočestica bakra i zlata i njihovih kompozita sa polianilinom

Bogdanović, Una

(Универзитет у Београду, Факултет за физичку хемију, 2016)

TY  - THES
AU  - Bogdanović, Una
PY  - 2016
UR  - http://eteze.bg.ac.rs/application/showtheses?thesesId=3441
UR  - https://fedorabg.bg.ac.rs/fedora/get/o:12015/bdef:Content/download
UR  - https://fedorabg.bg.ac.rs/fedora/get/o:12060/bdef:Content/download
UR  - http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=48107791
UR  - http://nardus.mpn.gov.rs/123456789/6081
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7294
AB  - Istraživanja u oblasti sinteze, karakterizacije i primene nanokompozita na bazi nanočestica metala i provodnih polimera kao što je polianilin (PANI), sa jedinstvenim fizičkohemijskim svojstvima, veoma su aktuelna. Kombinovanjem karakterističnih svojstava obe komponente (nanočestica metala i PANI), mogu se sintetisati nanokompoziti poboljšanih optičkih, električnih, termičkih i drugih karakteristika u odnosu na polazne komponente, sa mogućom primenom ovih materijala kao senzora neorganskih i organskih jedinjenja, u katalizi, elektrokatalizi, mikrobiologiji i elektronici.Modifikacija i korišćenje specifičnih karakeristika nanočestica bakra (Cu) i zlata (Au), pojedinačno ili kao nanokompozita ovih čestica sa provodnim polimerom PANI, predmet su istraživanja ove doktorske disertacije. Pored toga, disertacija se bavi i ispitivanjem mogućnosti primene ovih sistema kao antimikrobnih i elektrokatalitičkih materijala. Nanočestice Cu i Au sintetisane su jednostavnim oksido–redukcionim reakcijama u vodi kao medijumu, dok su nanokompoziti ovih čestica sa PANI, sintetisani novim metodama, primenom reakcije oksidativne hemijske polimerizacije anilina koja se odvija istovremeno kada i formiranje nanočestica Cu ili Au ili se odvija u prisustvu prethodno sintetisanih nanočestica (Au) različitih veličina. Na osnovu istraživanja navedenih sistema, doktorska disertacija je tematski podeljena u četiri celine:1. Sinteza i karakterizacija nanočestica Cu i ispitivanje njihovog uticaja na razvoj tri jednoćelijska patogena mikroorganizma: Gram – negativne bakterije Escherichia coli, Gram – pozitivne bakterije Staphylococcus aureus i gljivice Candida albicans;2. Sinteza i karakterizacija nanokompozita PANI sa česticama Cu i ispitivanje njegove antimikrobne aktivnosti prema prethodno navedenim patogenim mikroorganizmima;3. Sinteza i karakterizacija nanokompozita PANI sa česticama Au sintetisanim ex situ i ispitivanje uticaja ovih nanočestica na svojstva i provodljivost PANI;4. Sinteza i karakterizacija nanokompozita PANI sa česticama Au sintetisanim in situ i ispitivanje njihove elektrokatalitičke aktivnosti prema reakciji redukcije kiseonika...
AB  - Synthesis, characterization and application of nanocomposites based on metal nanoparticles and conductive polymers such as polyaniline (PANI), with unique physicochemical properties, is currently receiving tremendous attention. By combining the characteristics of these two components (metal nanoparticles and PANI), nanocomposites with improved optical, electrical, thermal and other characteristics with respect to the initial components can be created, with large variety of applications including catalysis, electrocatalysis, sensors of inorganic and organic compounds, as well as applications in microbiology and electronic devices.Modification and utilization of specific properties of copper (Cu) and gold (Au) nanoparticles, either individually or in the nanocomposites with conductive polymer PANI are the subjects of this PhD thesis. Moreover, potential applications of these systems as antimicrobial and electrocatalytic materials are investigated. Cu and Au nanoparticles were synthesized by simple oxidation–reduction reactions in water as a medium, while the nanocomposites of these particles with PANI were synthesized by novel methods, using chemical oxidative polymerization of aniline simultaneously with the formation of Cu or Au nanoparticles, or in the presence of preformed Au nanoparticles of different sizes.Topic of this work can be apart into four different units:1. Synthesis and characterization of Cu nanoparticles and assaying of their impact on the development of three pathogen microorganisms: Gram – negative bacteria Escherichia coli, Gram – positive bacteria Staphylococcus aureus and fungus Candida albicans;2. Synthesis and characterization of nanocomposite based on PANI and Cu nanoparticles and assaying of its antimicrobial activity against the above–mentioned pathogen microorganisms;3. Synthesis and characterization of nanocomposites based on PANI and ex situ synthesized Au nanoparticles, as well as investigation of their influence on PANI characteristics and conductivity;...
PB  - Универзитет у Београду, Факултет за физичку хемију
T2  - Универзитет у Београду
T1  - Sinteza, karakterizacija i primena nanočestica bakra i zlata i njihovih kompozita sa polianilinom
T1  - Synthesis, characterization and application of copper and gold nanoparticles and their composites with polyaniline
ER  - 
@phdthesis{
author = "Bogdanović, Una",
year = "2016",
abstract = "Istraživanja u oblasti sinteze, karakterizacije i primene nanokompozita na bazi nanočestica metala i provodnih polimera kao što je polianilin (PANI), sa jedinstvenim fizičkohemijskim svojstvima, veoma su aktuelna. Kombinovanjem karakterističnih svojstava obe komponente (nanočestica metala i PANI), mogu se sintetisati nanokompoziti poboljšanih optičkih, električnih, termičkih i drugih karakteristika u odnosu na polazne komponente, sa mogućom primenom ovih materijala kao senzora neorganskih i organskih jedinjenja, u katalizi, elektrokatalizi, mikrobiologiji i elektronici.Modifikacija i korišćenje specifičnih karakeristika nanočestica bakra (Cu) i zlata (Au), pojedinačno ili kao nanokompozita ovih čestica sa provodnim polimerom PANI, predmet su istraživanja ove doktorske disertacije. Pored toga, disertacija se bavi i ispitivanjem mogućnosti primene ovih sistema kao antimikrobnih i elektrokatalitičkih materijala. Nanočestice Cu i Au sintetisane su jednostavnim oksido–redukcionim reakcijama u vodi kao medijumu, dok su nanokompoziti ovih čestica sa PANI, sintetisani novim metodama, primenom reakcije oksidativne hemijske polimerizacije anilina koja se odvija istovremeno kada i formiranje nanočestica Cu ili Au ili se odvija u prisustvu prethodno sintetisanih nanočestica (Au) različitih veličina. Na osnovu istraživanja navedenih sistema, doktorska disertacija je tematski podeljena u četiri celine:1. Sinteza i karakterizacija nanočestica Cu i ispitivanje njihovog uticaja na razvoj tri jednoćelijska patogena mikroorganizma: Gram – negativne bakterije Escherichia coli, Gram – pozitivne bakterije Staphylococcus aureus i gljivice Candida albicans;2. Sinteza i karakterizacija nanokompozita PANI sa česticama Cu i ispitivanje njegove antimikrobne aktivnosti prema prethodno navedenim patogenim mikroorganizmima;3. Sinteza i karakterizacija nanokompozita PANI sa česticama Au sintetisanim ex situ i ispitivanje uticaja ovih nanočestica na svojstva i provodljivost PANI;4. Sinteza i karakterizacija nanokompozita PANI sa česticama Au sintetisanim in situ i ispitivanje njihove elektrokatalitičke aktivnosti prema reakciji redukcije kiseonika..., Synthesis, characterization and application of nanocomposites based on metal nanoparticles and conductive polymers such as polyaniline (PANI), with unique physicochemical properties, is currently receiving tremendous attention. By combining the characteristics of these two components (metal nanoparticles and PANI), nanocomposites with improved optical, electrical, thermal and other characteristics with respect to the initial components can be created, with large variety of applications including catalysis, electrocatalysis, sensors of inorganic and organic compounds, as well as applications in microbiology and electronic devices.Modification and utilization of specific properties of copper (Cu) and gold (Au) nanoparticles, either individually or in the nanocomposites with conductive polymer PANI are the subjects of this PhD thesis. Moreover, potential applications of these systems as antimicrobial and electrocatalytic materials are investigated. Cu and Au nanoparticles were synthesized by simple oxidation–reduction reactions in water as a medium, while the nanocomposites of these particles with PANI were synthesized by novel methods, using chemical oxidative polymerization of aniline simultaneously with the formation of Cu or Au nanoparticles, or in the presence of preformed Au nanoparticles of different sizes.Topic of this work can be apart into four different units:1. Synthesis and characterization of Cu nanoparticles and assaying of their impact on the development of three pathogen microorganisms: Gram – negative bacteria Escherichia coli, Gram – positive bacteria Staphylococcus aureus and fungus Candida albicans;2. Synthesis and characterization of nanocomposite based on PANI and Cu nanoparticles and assaying of its antimicrobial activity against the above–mentioned pathogen microorganisms;3. Synthesis and characterization of nanocomposites based on PANI and ex situ synthesized Au nanoparticles, as well as investigation of their influence on PANI characteristics and conductivity;...",
publisher = "Универзитет у Београду, Факултет за физичку хемију",
journal = "Универзитет у Београду",
title = "Sinteza, karakterizacija i primena nanočestica bakra i zlata i njihovih kompozita sa polianilinom, Synthesis, characterization and application of copper and gold nanoparticles and their composites with polyaniline"
}
Bogdanović, U.. (2016). Sinteza, karakterizacija i primena nanočestica bakra i zlata i njihovih kompozita sa polianilinom. in Универзитет у Београду
Универзитет у Београду, Факултет за физичку хемију..
Bogdanović U. Sinteza, karakterizacija i primena nanočestica bakra i zlata i njihovih kompozita sa polianilinom. in Универзитет у Београду. 2016;..
Bogdanović, Una, "Sinteza, karakterizacija i primena nanočestica bakra i zlata i njihovih kompozita sa polianilinom" in Универзитет у Београду (2016).

Electrocatalityc application of gold-polyaniline nanocomposite

Bogdanović, Una; Vodnik, Vesna; Pašti, Igor A.; Ćirić-Marjanović, Gordana N.; Mitrić, Miodrag; Ahrenkiel, Scott Phillip

(Society of Physical Chemists of Serbia, 2016)

TY  - CONF
AU  - Bogdanović, Una
AU  - Vodnik, Vesna
AU  - Pašti, Igor A.
AU  - Ćirić-Marjanović, Gordana N.
AU  - Mitrić, Miodrag
AU  - Ahrenkiel, Scott Phillip
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9178
AB  - Gold‒polyaniline (AuPANI) nanocomposite, with granular morphology  of PANI and rod‒like Au nanoparticles (NPs) as dominate structure distributed in  it,  was  prepared  by  interfacial  polymerization  method  in  an  immiscible water/toluene     biphasic     system.     Simultaneously     with     the     aniline polymerization to polyaniline (PANI) by HAuCl4, as an oxidant, AuNPs are formed. AuPANI composite as green precipitate is collected from aqueous phase.  Polyaniline  in  the  composite  is  in  the  conductive  emeraldine  salt form  (PANIES),  with  high  amount  of  Au  (28.85  wt  %).  Nanocomposite showed   great   electrocatalytic   activity   towards   the   electrochemical   O2reduction   reaction   (ORR),   with   high   ORR   onset   potential   and   high selectivity  for  O2reduction  to  water.  This  makes  it  a  good  candidate  for  a new class of Pt‒free ORR catalyst.
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2016 : 13th international conference on fundamental and applied aspects of physical chemistry
T1  - Electrocatalityc application of gold-polyaniline nanocomposite
SP  - 391
EP  - 394
ER  - 
@conference{
author = "Bogdanović, Una and Vodnik, Vesna and Pašti, Igor A. and Ćirić-Marjanović, Gordana N. and Mitrić, Miodrag and Ahrenkiel, Scott Phillip",
year = "2016",
abstract = "Gold‒polyaniline (AuPANI) nanocomposite, with granular morphology  of PANI and rod‒like Au nanoparticles (NPs) as dominate structure distributed in  it,  was  prepared  by  interfacial  polymerization  method  in  an  immiscible water/toluene     biphasic     system.     Simultaneously     with     the     aniline polymerization to polyaniline (PANI) by HAuCl4, as an oxidant, AuNPs are formed. AuPANI composite as green precipitate is collected from aqueous phase.  Polyaniline  in  the  composite  is  in  the  conductive  emeraldine  salt form  (PANIES),  with  high  amount  of  Au  (28.85  wt  %).  Nanocomposite showed   great   electrocatalytic   activity   towards   the   electrochemical   O2reduction   reaction   (ORR),   with   high   ORR   onset   potential   and   high selectivity  for  O2reduction  to  water.  This  makes  it  a  good  candidate  for  a new class of Pt‒free ORR catalyst.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2016 : 13th international conference on fundamental and applied aspects of physical chemistry",
title = "Electrocatalityc application of gold-polyaniline nanocomposite",
pages = "391-394"
}
Bogdanović, U., Vodnik, V., Pašti, I. A., Ćirić-Marjanović, G. N., Mitrić, M.,& Ahrenkiel, S. P.. (2016). Electrocatalityc application of gold-polyaniline nanocomposite. in Physical chemistry 2016 : 13th international conference on fundamental and applied aspects of physical chemistry
Society of Physical Chemists of Serbia., 391-394.
Bogdanović U, Vodnik V, Pašti IA, Ćirić-Marjanović GN, Mitrić M, Ahrenkiel SP. Electrocatalityc application of gold-polyaniline nanocomposite. in Physical chemistry 2016 : 13th international conference on fundamental and applied aspects of physical chemistry. 2016;:391-394..
Bogdanović, Una, Vodnik, Vesna, Pašti, Igor A., Ćirić-Marjanović, Gordana N., Mitrić, Miodrag, Ahrenkiel, Scott Phillip, "Electrocatalityc application of gold-polyaniline nanocomposite" in Physical chemistry 2016 : 13th international conference on fundamental and applied aspects of physical chemistry (2016):391-394.

Antimicrobial activity of copper-polyaniline nanocomposite

Bogdanović, Una; Vodnik, Vesna; Mitrić, Miodrag; Dimitrijević, Suzana I.; Škapin, Srečo Davor; Žunič, Vojka; Budimir, Milica; Stoiljković, Milovan

(Society of Physical Chemists of Serbia, 2016)

TY  - CONF
AU  - Bogdanović, Una
AU  - Vodnik, Vesna
AU  - Mitrić, Miodrag
AU  - Dimitrijević, Suzana I.
AU  - Škapin, Srečo Davor
AU  - Žunič, Vojka
AU  - Budimir, Milica
AU  - Stoiljković, Milovan
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9257
AB  - By combining copper nanoparticles (CuNPs) as a good antimicrobial agent
with polyaniline (PANI), which also shows some degree of antimicrobial
activity, we were able to synthesize a novel promising antimicrobial
material – copper-polyaniline (Cu-PANI) nanocomposite. It was prepared
by simple in situ polymerization method, when thepolymer and metal
nanoparticles (dav= 6 nm)are produced simultaneously.Quantitative
(antimicrobial assay) and qualitative (atomic force microscopy – AFM)
analyses showed that synergestic effect of CuNPs and PANI against
bacteriaE. coli andS. aureus,and fungusC. albicans, provides its faster
andhigher antimicrobial activity than any component acting alone.This
makes it a great candidate for fast waste water treatment.
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2016 : 13th international conference on fundamental and applied aspects of physical chemistry
T1  - Antimicrobial activity of copper-polyaniline nanocomposite
SP  - 653
EP  - 656
ER  - 
@conference{
author = "Bogdanović, Una and Vodnik, Vesna and Mitrić, Miodrag and Dimitrijević, Suzana I. and Škapin, Srečo Davor and Žunič, Vojka and Budimir, Milica and Stoiljković, Milovan",
year = "2016",
abstract = "By combining copper nanoparticles (CuNPs) as a good antimicrobial agent
with polyaniline (PANI), which also shows some degree of antimicrobial
activity, we were able to synthesize a novel promising antimicrobial
material – copper-polyaniline (Cu-PANI) nanocomposite. It was prepared
by simple in situ polymerization method, when thepolymer and metal
nanoparticles (dav= 6 nm)are produced simultaneously.Quantitative
(antimicrobial assay) and qualitative (atomic force microscopy – AFM)
analyses showed that synergestic effect of CuNPs and PANI against
bacteriaE. coli andS. aureus,and fungusC. albicans, provides its faster
andhigher antimicrobial activity than any component acting alone.This
makes it a great candidate for fast waste water treatment.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2016 : 13th international conference on fundamental and applied aspects of physical chemistry",
title = "Antimicrobial activity of copper-polyaniline nanocomposite",
pages = "653-656"
}
Bogdanović, U., Vodnik, V., Mitrić, M., Dimitrijević, S. I., Škapin, S. D., Žunič, V., Budimir, M.,& Stoiljković, M.. (2016). Antimicrobial activity of copper-polyaniline nanocomposite. in Physical chemistry 2016 : 13th international conference on fundamental and applied aspects of physical chemistry
Society of Physical Chemists of Serbia., 653-656.
Bogdanović U, Vodnik V, Mitrić M, Dimitrijević SI, Škapin SD, Žunič V, Budimir M, Stoiljković M. Antimicrobial activity of copper-polyaniline nanocomposite. in Physical chemistry 2016 : 13th international conference on fundamental and applied aspects of physical chemistry. 2016;:653-656..
Bogdanović, Una, Vodnik, Vesna, Mitrić, Miodrag, Dimitrijević, Suzana I., Škapin, Srečo Davor, Žunič, Vojka, Budimir, Milica, Stoiljković, Milovan, "Antimicrobial activity of copper-polyaniline nanocomposite" in Physical chemistry 2016 : 13th international conference on fundamental and applied aspects of physical chemistry (2016):653-656.

Adsorption of Organophosphate Pesticide Dimethoate on Gold Nanospheres and Nanorods

Momić, Tatjana; Lazarević-Pašti, Tamara; Bogdanović, Una; Vodnik, Vesna; Mraković, Ana Đ.; Rakočević, Zlatko Lj.; Pavlović, Vladimir B.; Vasić, Vesna M.

(2016)

TY  - JOUR
AU  - Momić, Tatjana
AU  - Lazarević-Pašti, Tamara
AU  - Bogdanović, Una
AU  - Vodnik, Vesna
AU  - Mraković, Ana Đ.
AU  - Rakočević, Zlatko Lj.
AU  - Pavlović, Vladimir B.
AU  - Vasić, Vesna M.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1347
AB  - Organophosphorus pesticide dimethoate was adsorbed onto gold nanospheres and nanorods in aqueous solution using batch technique. Adsorption of dimethoate onto gold nanoparticles was confirmed by UV-Vis spectrophotometry, TEM, AFM, and FTIR analysis. The adsorption of nanospheres resulted in aggregation which was not the case with nanorods. Nanoparticles adsorption features were characterized using Langmuir and Freundlich isotherm models. The Langmuir adsorption isotherm was found to have the best fit to the experimental data for both types of nanoparticles. Adsorption capacity detected for nanospheres is 456 mg/g and for nanorods is 57.1 mg/g. Also, nanoparticles were successfully used for dimethoate removal from spiked drinking water while nanospheres were shown to be more efficient than nanorods.
T2  - Journal of Nanomaterials
T1  - Adsorption of Organophosphate Pesticide Dimethoate on Gold Nanospheres and Nanorods
DO  - 10.1155/2016/8910271
ER  - 
@article{
author = "Momić, Tatjana and Lazarević-Pašti, Tamara and Bogdanović, Una and Vodnik, Vesna and Mraković, Ana Đ. and Rakočević, Zlatko Lj. and Pavlović, Vladimir B. and Vasić, Vesna M.",
year = "2016",
abstract = "Organophosphorus pesticide dimethoate was adsorbed onto gold nanospheres and nanorods in aqueous solution using batch technique. Adsorption of dimethoate onto gold nanoparticles was confirmed by UV-Vis spectrophotometry, TEM, AFM, and FTIR analysis. The adsorption of nanospheres resulted in aggregation which was not the case with nanorods. Nanoparticles adsorption features were characterized using Langmuir and Freundlich isotherm models. The Langmuir adsorption isotherm was found to have the best fit to the experimental data for both types of nanoparticles. Adsorption capacity detected for nanospheres is 456 mg/g and for nanorods is 57.1 mg/g. Also, nanoparticles were successfully used for dimethoate removal from spiked drinking water while nanospheres were shown to be more efficient than nanorods.",
journal = "Journal of Nanomaterials",
title = "Adsorption of Organophosphate Pesticide Dimethoate on Gold Nanospheres and Nanorods",
doi = "10.1155/2016/8910271"
}
Momić, T., Lazarević-Pašti, T., Bogdanović, U., Vodnik, V., Mraković, A. Đ., Rakočević, Z. Lj., Pavlović, V. B.,& Vasić, V. M.. (2016). Adsorption of Organophosphate Pesticide Dimethoate on Gold Nanospheres and Nanorods. in Journal of Nanomaterials.
https://doi.org/10.1155/2016/8910271
Momić T, Lazarević-Pašti T, Bogdanović U, Vodnik V, Mraković AĐ, Rakočević ZL, Pavlović VB, Vasić VM. Adsorption of Organophosphate Pesticide Dimethoate on Gold Nanospheres and Nanorods. in Journal of Nanomaterials. 2016;.
doi:10.1155/2016/8910271 .
Momić, Tatjana, Lazarević-Pašti, Tamara, Bogdanović, Una, Vodnik, Vesna, Mraković, Ana Đ., Rakočević, Zlatko Lj., Pavlović, Vladimir B., Vasić, Vesna M., "Adsorption of Organophosphate Pesticide Dimethoate on Gold Nanospheres and Nanorods" in Journal of Nanomaterials (2016),
https://doi.org/10.1155/2016/8910271 . .
26
18
14

Nanomaterial with High Antimicrobial Efficacy-Copper/Polyaniline Nanocomposite

Bogdanović, Una; Vodnik, Vesna; Mitrić, Miodrag; Dimitrijević, Suzana I.; Škapin, Srečo Davor; Zunic, Vojka; Budimir, Milica; Stoiljković, Milovan

(2015)

TY  - JOUR
AU  - Bogdanović, Una
AU  - Vodnik, Vesna
AU  - Mitrić, Miodrag
AU  - Dimitrijević, Suzana I.
AU  - Škapin, Srečo Davor
AU  - Zunic, Vojka
AU  - Budimir, Milica
AU  - Stoiljković, Milovan
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/376
AB  - This study explores different mechanisms of antimicrobial action by designing hybrid nanomaterials that provide a new approach in the fight against resistant microbes. Here, we present a cheap copper-polyaniline (Cu-PANI) nanocomposite material with enhanced antimicrobial properties, prepared by simple in situ polymerization method, when polymer and metal nanoparticles are produced simultaneously. The copper nanoparticles (CuNPs) are uniformly dispersed in the polymer and have a narrow size distribution (dav = 6 nm). We found that CuNPs and PANI act synergistically against three strains, Escherichia coli, Staphylococcus aureus, and Candida albicans, and resulting nanocomposite exhibits higher antimicrobial activity than any component acting alone. Before using the colony counting method to quantify its time and concentration antimicrobial activity, different techniques (UV-visible spectroscopy, transmission electron microscopy, scanning electron microscope, field emission scanning electron microscopy, X-ray diffraction, Fourier transform infrared spectrophotometry, and inductively coupled plasma optical emission spectrometry) were used to identify the optical, structural, and chemical aspects of the formed Cu-PANI nanocomposite. The antimicrobial activity of this nanocomposite shows that the microbial growth has been fully inhibited; moreover, some of the tested microbes were killed. Atomic force microscopy revealed dramatic changes in morphology of tested cells due to disruption of their cell wall integrity after incubation with Cu-PANI nanocomposite.
T2  - ACS Applied Materials and Interfaces
T1  - Nanomaterial with High Antimicrobial Efficacy-Copper/Polyaniline Nanocomposite
VL  - 7
IS  - 3
SP  - 1955
EP  - 1966
DO  - 10.1021/am507746m
ER  - 
@article{
author = "Bogdanović, Una and Vodnik, Vesna and Mitrić, Miodrag and Dimitrijević, Suzana I. and Škapin, Srečo Davor and Zunic, Vojka and Budimir, Milica and Stoiljković, Milovan",
year = "2015",
abstract = "This study explores different mechanisms of antimicrobial action by designing hybrid nanomaterials that provide a new approach in the fight against resistant microbes. Here, we present a cheap copper-polyaniline (Cu-PANI) nanocomposite material with enhanced antimicrobial properties, prepared by simple in situ polymerization method, when polymer and metal nanoparticles are produced simultaneously. The copper nanoparticles (CuNPs) are uniformly dispersed in the polymer and have a narrow size distribution (dav = 6 nm). We found that CuNPs and PANI act synergistically against three strains, Escherichia coli, Staphylococcus aureus, and Candida albicans, and resulting nanocomposite exhibits higher antimicrobial activity than any component acting alone. Before using the colony counting method to quantify its time and concentration antimicrobial activity, different techniques (UV-visible spectroscopy, transmission electron microscopy, scanning electron microscope, field emission scanning electron microscopy, X-ray diffraction, Fourier transform infrared spectrophotometry, and inductively coupled plasma optical emission spectrometry) were used to identify the optical, structural, and chemical aspects of the formed Cu-PANI nanocomposite. The antimicrobial activity of this nanocomposite shows that the microbial growth has been fully inhibited; moreover, some of the tested microbes were killed. Atomic force microscopy revealed dramatic changes in morphology of tested cells due to disruption of their cell wall integrity after incubation with Cu-PANI nanocomposite.",
journal = "ACS Applied Materials and Interfaces",
title = "Nanomaterial with High Antimicrobial Efficacy-Copper/Polyaniline Nanocomposite",
volume = "7",
number = "3",
pages = "1955-1966",
doi = "10.1021/am507746m"
}
Bogdanović, U., Vodnik, V., Mitrić, M., Dimitrijević, S. I., Škapin, S. D., Zunic, V., Budimir, M.,& Stoiljković, M.. (2015). Nanomaterial with High Antimicrobial Efficacy-Copper/Polyaniline Nanocomposite. in ACS Applied Materials and Interfaces, 7(3), 1955-1966.
https://doi.org/10.1021/am507746m
Bogdanović U, Vodnik V, Mitrić M, Dimitrijević SI, Škapin SD, Zunic V, Budimir M, Stoiljković M. Nanomaterial with High Antimicrobial Efficacy-Copper/Polyaniline Nanocomposite. in ACS Applied Materials and Interfaces. 2015;7(3):1955-1966.
doi:10.1021/am507746m .
Bogdanović, Una, Vodnik, Vesna, Mitrić, Miodrag, Dimitrijević, Suzana I., Škapin, Srečo Davor, Zunic, Vojka, Budimir, Milica, Stoiljković, Milovan, "Nanomaterial with High Antimicrobial Efficacy-Copper/Polyaniline Nanocomposite" in ACS Applied Materials and Interfaces, 7, no. 3 (2015):1955-1966,
https://doi.org/10.1021/am507746m . .
1
93
78
83

Interfacial Synthesis of Gold-Polyaniline Nanocomposite and Its Electrocatalytic Application

Bogdanović, Una; Pašti, Igor A.; Ćirić-Marjanović, Gordana N.; Mitrić, Miodrag; Ahrenkiel, Scott Phillip; Vodnik, Vesna

(2015)

TY  - JOUR
AU  - Bogdanović, Una
AU  - Pašti, Igor A.
AU  - Ćirić-Marjanović, Gordana N.
AU  - Mitrić, Miodrag
AU  - Ahrenkiel, Scott Phillip
AU  - Vodnik, Vesna
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/922
AB  - Gold-polyaniline (Au-PANI) nanocomposite was prepared using a simple interfacial polymerization method, performed in an immiscible water/toluene biphasic system using tetrachloroaurate, AuCl4- as an oxidant. The formation of Au+ nanoparticles (AuNPs) or Au-PANI nanocomposite can be controlled to a certain degree by varying the ratio of initial Au+ and aniline concentrations. Under optimal condition (HAuCl4/aniline ratio is 1:2), green dispersion of Au-PANI nanocomposite is produced in aqueous phase, whose morphology, structure and physicochemical properties are investigated in details. The nanocomposite shows granular morphology with mostly rodlike AuNPs embedded in polymer. It was found that polyaniline in the composite is in the conducting emeraldine salt form, containing high amount of Au (28.85 wt %). Furthermore, the electrical conductivity of the nanocomposite was found to be four-fold higher than that of the polymer itself. In addition, the nanocomposite powder, isolated from the as-prepared aqueous dispersion, can later be easily redispersed in water and further used for various applications. Moreover, the obtained Au-PANI nanocomposite showed excellent electrocatalytic performance toward the electrochemical oxygen reduction reaction (ORR), with high ORR onset potential and good selectivity. This makes it a promising candidate for a new class of Pt-free ORR. catalyst.
T2  - ACS Applied Materials and Interfaces
T1  - Interfacial Synthesis of Gold-Polyaniline Nanocomposite and Its Electrocatalytic Application
VL  - 7
IS  - 51
SP  - 28393
EP  - 28403
DO  - 10.1021/acsami.5b09145
ER  - 
@article{
author = "Bogdanović, Una and Pašti, Igor A. and Ćirić-Marjanović, Gordana N. and Mitrić, Miodrag and Ahrenkiel, Scott Phillip and Vodnik, Vesna",
year = "2015",
abstract = "Gold-polyaniline (Au-PANI) nanocomposite was prepared using a simple interfacial polymerization method, performed in an immiscible water/toluene biphasic system using tetrachloroaurate, AuCl4- as an oxidant. The formation of Au+ nanoparticles (AuNPs) or Au-PANI nanocomposite can be controlled to a certain degree by varying the ratio of initial Au+ and aniline concentrations. Under optimal condition (HAuCl4/aniline ratio is 1:2), green dispersion of Au-PANI nanocomposite is produced in aqueous phase, whose morphology, structure and physicochemical properties are investigated in details. The nanocomposite shows granular morphology with mostly rodlike AuNPs embedded in polymer. It was found that polyaniline in the composite is in the conducting emeraldine salt form, containing high amount of Au (28.85 wt %). Furthermore, the electrical conductivity of the nanocomposite was found to be four-fold higher than that of the polymer itself. In addition, the nanocomposite powder, isolated from the as-prepared aqueous dispersion, can later be easily redispersed in water and further used for various applications. Moreover, the obtained Au-PANI nanocomposite showed excellent electrocatalytic performance toward the electrochemical oxygen reduction reaction (ORR), with high ORR onset potential and good selectivity. This makes it a promising candidate for a new class of Pt-free ORR. catalyst.",
journal = "ACS Applied Materials and Interfaces",
title = "Interfacial Synthesis of Gold-Polyaniline Nanocomposite and Its Electrocatalytic Application",
volume = "7",
number = "51",
pages = "28393-28403",
doi = "10.1021/acsami.5b09145"
}
Bogdanović, U., Pašti, I. A., Ćirić-Marjanović, G. N., Mitrić, M., Ahrenkiel, S. P.,& Vodnik, V.. (2015). Interfacial Synthesis of Gold-Polyaniline Nanocomposite and Its Electrocatalytic Application. in ACS Applied Materials and Interfaces, 7(51), 28393-28403.
https://doi.org/10.1021/acsami.5b09145
Bogdanović U, Pašti IA, Ćirić-Marjanović GN, Mitrić M, Ahrenkiel SP, Vodnik V. Interfacial Synthesis of Gold-Polyaniline Nanocomposite and Its Electrocatalytic Application. in ACS Applied Materials and Interfaces. 2015;7(51):28393-28403.
doi:10.1021/acsami.5b09145 .
Bogdanović, Una, Pašti, Igor A., Ćirić-Marjanović, Gordana N., Mitrić, Miodrag, Ahrenkiel, Scott Phillip, Vodnik, Vesna, "Interfacial Synthesis of Gold-Polyaniline Nanocomposite and Its Electrocatalytic Application" in ACS Applied Materials and Interfaces, 7, no. 51 (2015):28393-28403,
https://doi.org/10.1021/acsami.5b09145 . .
3
89
81
86

Antibacterial activity of copper nanoparticles

Bogdanović, Una; Lazić, Vesna M.; Vodnik, Vesna; Budimir, Milica; Marković, Zoran M.; Dimitrijević, Suzana I.; Džunuzović, Jasna V.

(Society of Physical Chemists of Serbia, 2014)

TY  - CONF
AU  - Bogdanović, Una
AU  - Lazić, Vesna M.
AU  - Vodnik, Vesna
AU  - Budimir, Milica
AU  - Marković, Zoran M.
AU  - Dimitrijević, Suzana I.
AU  - Džunuzović, Jasna V.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9194
AB  - Copper nanoparticles (CuNPs), with an average particle size of about 5 nm,
was prepared by the simple chemical reduction procedure. TEM and UV–
Vis spectroscopy contributed to the analysis of size and optical properties of
CuNPs, and their antibacterial activity was evaluated toward human
pathogenic bacteria Escherichia coli and Staphylococcus aureus, in a
concentration dependent manner. The changes in the cell membrane
morphology of tested strains were investigated by atomic force microscope
(AFM), after 2 h of their contact with CuNPs. It was found that CuNPs
cause different types of cell membrane disruptions, as well as that S. aureus
bacteria were slightly resistant to the cell membrane damage than E. coli.
PB  - Society of Physical Chemists of Serbia
C3  - PHYSICAL CHEMISTRY 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
T1  - Antibacterial activity of copper nanoparticles
VL  - F-21-P
ER  - 
@conference{
author = "Bogdanović, Una and Lazić, Vesna M. and Vodnik, Vesna and Budimir, Milica and Marković, Zoran M. and Dimitrijević, Suzana I. and Džunuzović, Jasna V.",
year = "2014",
abstract = "Copper nanoparticles (CuNPs), with an average particle size of about 5 nm,
was prepared by the simple chemical reduction procedure. TEM and UV–
Vis spectroscopy contributed to the analysis of size and optical properties of
CuNPs, and their antibacterial activity was evaluated toward human
pathogenic bacteria Escherichia coli and Staphylococcus aureus, in a
concentration dependent manner. The changes in the cell membrane
morphology of tested strains were investigated by atomic force microscope
(AFM), after 2 h of their contact with CuNPs. It was found that CuNPs
cause different types of cell membrane disruptions, as well as that S. aureus
bacteria were slightly resistant to the cell membrane damage than E. coli.",
publisher = "Society of Physical Chemists of Serbia",
journal = "PHYSICAL CHEMISTRY 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry",
title = "Antibacterial activity of copper nanoparticles",
volume = "F-21-P"
}
Bogdanović, U., Lazić, V. M., Vodnik, V., Budimir, M., Marković, Z. M., Dimitrijević, S. I.,& Džunuzović, J. V.. (2014). Antibacterial activity of copper nanoparticles. in PHYSICAL CHEMISTRY 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
Society of Physical Chemists of Serbia., F-21-P.
Bogdanović U, Lazić VM, Vodnik V, Budimir M, Marković ZM, Dimitrijević SI, Džunuzović JV. Antibacterial activity of copper nanoparticles. in PHYSICAL CHEMISTRY 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry. 2014;F-21-P..
Bogdanović, Una, Lazić, Vesna M., Vodnik, Vesna, Budimir, Milica, Marković, Zoran M., Dimitrijević, Suzana I., Džunuzović, Jasna V., "Antibacterial activity of copper nanoparticles" in PHYSICAL CHEMISTRY 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry, F-21-P (2014).

Copper nanoparticles with high antimicrobial activity

Bogdanović, Una; Lazić, Vesna M.; Vodnik, Vesna; Budimir, Milica; Marković, Zoran M.; Dimitrijević, Suzana I.

(2014)

TY  - JOUR
AU  - Bogdanović, Una
AU  - Lazić, Vesna M.
AU  - Vodnik, Vesna
AU  - Budimir, Milica
AU  - Marković, Zoran M.
AU  - Dimitrijević, Suzana I.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6044
AB  - Copper (Cu) hydrosol containing small nanoparticles (NPs) (similar to 5 nm) with narrow size distribution were used to investigate antimicrobial activity toward representative microorganisms of public concern (Escherichia coli, Staphylococcus aureus and Candida albicans). Microbial reduction measurements were performed as a function of CuNPs concentration, after 2 h of their contact. Surface and morphological alterations of the strains exposed to the Cu NPs were studied on the cellular level using an atomic force microscope (AFM). (C) 2014 Elsevier B.V. All rights reserved.
T2  - Materials Letters
T1  - Copper nanoparticles with high antimicrobial activity
VL  - 128
SP  - 75
EP  - 78
DO  - 10.1016/j.matlet.2014.04.106
ER  - 
@article{
author = "Bogdanović, Una and Lazić, Vesna M. and Vodnik, Vesna and Budimir, Milica and Marković, Zoran M. and Dimitrijević, Suzana I.",
year = "2014",
abstract = "Copper (Cu) hydrosol containing small nanoparticles (NPs) (similar to 5 nm) with narrow size distribution were used to investigate antimicrobial activity toward representative microorganisms of public concern (Escherichia coli, Staphylococcus aureus and Candida albicans). Microbial reduction measurements were performed as a function of CuNPs concentration, after 2 h of their contact. Surface and morphological alterations of the strains exposed to the Cu NPs were studied on the cellular level using an atomic force microscope (AFM). (C) 2014 Elsevier B.V. All rights reserved.",
journal = "Materials Letters",
title = "Copper nanoparticles with high antimicrobial activity",
volume = "128",
pages = "75-78",
doi = "10.1016/j.matlet.2014.04.106"
}
Bogdanović, U., Lazić, V. M., Vodnik, V., Budimir, M., Marković, Z. M.,& Dimitrijević, S. I.. (2014). Copper nanoparticles with high antimicrobial activity. in Materials Letters, 128, 75-78.
https://doi.org/10.1016/j.matlet.2014.04.106
Bogdanović U, Lazić VM, Vodnik V, Budimir M, Marković ZM, Dimitrijević SI. Copper nanoparticles with high antimicrobial activity. in Materials Letters. 2014;128:75-78.
doi:10.1016/j.matlet.2014.04.106 .
Bogdanović, Una, Lazić, Vesna M., Vodnik, Vesna, Budimir, Milica, Marković, Zoran M., Dimitrijević, Suzana I., "Copper nanoparticles with high antimicrobial activity" in Materials Letters, 128 (2014):75-78,
https://doi.org/10.1016/j.matlet.2014.04.106 . .
3
99
85
89

Interfacial synthesis and characterization of gold/polyaniline nanocomposites

Bogdanović, Una; Vodnik, Vesna; Ahrenkiel, Scott Phillip; Stoiljković, Milovan; Ćirić-Marjanović, Gordana N.; Nedeljković, Jovan

(2014)

TY  - JOUR
AU  - Bogdanović, Una
AU  - Vodnik, Vesna
AU  - Ahrenkiel, Scott Phillip
AU  - Stoiljković, Milovan
AU  - Ćirić-Marjanović, Gordana N.
AU  - Nedeljković, Jovan
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/105
AB  - Composites consisting of polyaniline (PANI) and gold nanoparticles (AuNPs) with an average size of 17 and 30 nm were synthesized by an interfacial method performed in an immiscible water/toluene biphasic system. The effect of embedded AuNPs on the morphology, structure and physicochemical properties of Au/PANI nanocomposites was investigated using scanning and transmission electron microscopies, UV-vis, FTIR, Raman and ICP-AES spectroscopies, X-ray diffraction, elemental analysis and conductivity measurements. Microscopy studies indicated nanofibrous morphology for pure PAN! and Au/PANI nanocomposites, while FTIR and Raman spectroscopies were confirmed emeraldine salt form of PANI chains and the presence of phenazine units. Also, Raman spectroscopy measurements revealed an inherent structural inhomogeneity at the macromolecular level that exist in PANI chains in its pure form as well as in Au/PANI nanocomposites. In addition, the increase of the electrical conductivity observed in the nanocomposites was discussed. (C) 2014 Elsevier B.V. All rights reserved.
T2  - Synthetic Metals
T1  - Interfacial synthesis and characterization of gold/polyaniline nanocomposites
VL  - 195
SP  - 122
EP  - 131
DO  - 10.1016/j.synthmet.2014.05.018
ER  - 
@article{
author = "Bogdanović, Una and Vodnik, Vesna and Ahrenkiel, Scott Phillip and Stoiljković, Milovan and Ćirić-Marjanović, Gordana N. and Nedeljković, Jovan",
year = "2014",
abstract = "Composites consisting of polyaniline (PANI) and gold nanoparticles (AuNPs) with an average size of 17 and 30 nm were synthesized by an interfacial method performed in an immiscible water/toluene biphasic system. The effect of embedded AuNPs on the morphology, structure and physicochemical properties of Au/PANI nanocomposites was investigated using scanning and transmission electron microscopies, UV-vis, FTIR, Raman and ICP-AES spectroscopies, X-ray diffraction, elemental analysis and conductivity measurements. Microscopy studies indicated nanofibrous morphology for pure PAN! and Au/PANI nanocomposites, while FTIR and Raman spectroscopies were confirmed emeraldine salt form of PANI chains and the presence of phenazine units. Also, Raman spectroscopy measurements revealed an inherent structural inhomogeneity at the macromolecular level that exist in PANI chains in its pure form as well as in Au/PANI nanocomposites. In addition, the increase of the electrical conductivity observed in the nanocomposites was discussed. (C) 2014 Elsevier B.V. All rights reserved.",
journal = "Synthetic Metals",
title = "Interfacial synthesis and characterization of gold/polyaniline nanocomposites",
volume = "195",
pages = "122-131",
doi = "10.1016/j.synthmet.2014.05.018"
}
Bogdanović, U., Vodnik, V., Ahrenkiel, S. P., Stoiljković, M., Ćirić-Marjanović, G. N.,& Nedeljković, J.. (2014). Interfacial synthesis and characterization of gold/polyaniline nanocomposites. in Synthetic Metals, 195, 122-131.
https://doi.org/10.1016/j.synthmet.2014.05.018
Bogdanović U, Vodnik V, Ahrenkiel SP, Stoiljković M, Ćirić-Marjanović GN, Nedeljković J. Interfacial synthesis and characterization of gold/polyaniline nanocomposites. in Synthetic Metals. 2014;195:122-131.
doi:10.1016/j.synthmet.2014.05.018 .
Bogdanović, Una, Vodnik, Vesna, Ahrenkiel, Scott Phillip, Stoiljković, Milovan, Ćirić-Marjanović, Gordana N., Nedeljković, Jovan, "Interfacial synthesis and characterization of gold/polyaniline nanocomposites" in Synthetic Metals, 195 (2014):122-131,
https://doi.org/10.1016/j.synthmet.2014.05.018 . .
33
33
36

Anisotropic silver nanoparticles as filler for the formation of hybrid nanocomposites

Vodnik, Vesna; Šaponjić, Zoran; Džunuzović, Jasna V.; Bogdanović, Una; Mitrić, Miodrag; Nedeljković, Jovan

(2013)

TY  - JOUR
AU  - Vodnik, Vesna
AU  - Šaponjić, Zoran
AU  - Džunuzović, Jasna V.
AU  - Bogdanović, Una
AU  - Mitrić, Miodrag
AU  - Nedeljković, Jovan
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5277
AB  - Prismatic and plate-like silver nanoparticles (Ag NPs) were synthesized according to the seed-mediated method. These particles were used as precursors for preparation of homogenous, transparent and colored Ag/poly(vinyl alcohol) (PVA) nanocomposite films with different concentrations of Ag by solution-casting technique. Optical and structural characterization of these nanocomposites includes UV-visible spectroscopy, X-ray diffraction (XRD), FTIR spectroscopy and SEM measurements. Further, the effect of embedded nanoparticles on the thermal properties of the PVA matrix was studied. The value of the glass transition temperature of polymer is found to increase after embedding Ag NPs. Comparison of thermal properties of pure PVA and nanocomposite films showed that the thermo-oxidative stability of polymer slightly increased in the presence of Ag NPs. Furthermore, the effect of the Ag NPs on the crystallinity of polymer was also observed. (C) 2012 Elsevier Ltd. All rights reserved.
T2  - Materials Research Bulletin
T1  - Anisotropic silver nanoparticles as filler for the formation of hybrid nanocomposites
VL  - 48
IS  - 1
SP  - 52
EP  - 57
DO  - 10.1016/j.materresbull.2012.09.059
ER  - 
@article{
author = "Vodnik, Vesna and Šaponjić, Zoran and Džunuzović, Jasna V. and Bogdanović, Una and Mitrić, Miodrag and Nedeljković, Jovan",
year = "2013",
abstract = "Prismatic and plate-like silver nanoparticles (Ag NPs) were synthesized according to the seed-mediated method. These particles were used as precursors for preparation of homogenous, transparent and colored Ag/poly(vinyl alcohol) (PVA) nanocomposite films with different concentrations of Ag by solution-casting technique. Optical and structural characterization of these nanocomposites includes UV-visible spectroscopy, X-ray diffraction (XRD), FTIR spectroscopy and SEM measurements. Further, the effect of embedded nanoparticles on the thermal properties of the PVA matrix was studied. The value of the glass transition temperature of polymer is found to increase after embedding Ag NPs. Comparison of thermal properties of pure PVA and nanocomposite films showed that the thermo-oxidative stability of polymer slightly increased in the presence of Ag NPs. Furthermore, the effect of the Ag NPs on the crystallinity of polymer was also observed. (C) 2012 Elsevier Ltd. All rights reserved.",
journal = "Materials Research Bulletin",
title = "Anisotropic silver nanoparticles as filler for the formation of hybrid nanocomposites",
volume = "48",
number = "1",
pages = "52-57",
doi = "10.1016/j.materresbull.2012.09.059"
}
Vodnik, V., Šaponjić, Z., Džunuzović, J. V., Bogdanović, U., Mitrić, M.,& Nedeljković, J.. (2013). Anisotropic silver nanoparticles as filler for the formation of hybrid nanocomposites. in Materials Research Bulletin, 48(1), 52-57.
https://doi.org/10.1016/j.materresbull.2012.09.059
Vodnik V, Šaponjić Z, Džunuzović JV, Bogdanović U, Mitrić M, Nedeljković J. Anisotropic silver nanoparticles as filler for the formation of hybrid nanocomposites. in Materials Research Bulletin. 2013;48(1):52-57.
doi:10.1016/j.materresbull.2012.09.059 .
Vodnik, Vesna, Šaponjić, Zoran, Džunuzović, Jasna V., Bogdanović, Una, Mitrić, Miodrag, Nedeljković, Jovan, "Anisotropic silver nanoparticles as filler for the formation of hybrid nanocomposites" in Materials Research Bulletin, 48, no. 1 (2013):52-57,
https://doi.org/10.1016/j.materresbull.2012.09.059 . .
18
19
19

Surface plasmon resonance of Ag organosols: Experimental and theoretical investigations

Vukoje, Ivana D.; Božanić, Dušan K.; Džunuzović, Jasna V.; Bogdanović, Una; Vodnik, Vesna

(2012)

TY  - JOUR
AU  - Vukoje, Ivana D.
AU  - Božanić, Dušan K.
AU  - Džunuzović, Jasna V.
AU  - Bogdanović, Una
AU  - Vodnik, Vesna
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5337
AB  - The aim of this study was to investigate and compare the changes in surface plasmon resonance (SPR) of silver (Ag) hydrosol and organosols obtained by experimental and theoretical approaches. Silver nanoparticles (Ag NPs) of 5 +/- 1.5 nm in diameter were prepared in water by reduction of silver nitrate with sodium borohydride. Nanoparticles were subsequently transferred into different organic solvents (chloroform, hexane, toluene, 1,2-dichlorobenzene) using oleylamine as a transfer agent. These solvents were chosen because of the differences in their refractive indices. Using UV-Vis absorption spectrophotometry and transmission electron microscopy (TEM), we confirmed that there were no shape and size changes of the nanoparticles upon the transfer to the organic phase. The absorption spectra of the obtained Ag organosols showed changes only in the position of the SPR band depending on the dielectric property of the used solvent. To analyze these changes, absorption spectra were modelled using Mie theory for small spherical particles. The experimental and theoretical resonance values were compared with those predicted by the Drude model and its limitations in the analysis of absorption behavior of Ag NPs in organic solvents were briefly discussed.
T2  - Hemijska industrija
T1  - Surface plasmon resonance of Ag organosols: Experimental and theoretical investigations
VL  - 66
IS  - 6
SP  - 805
EP  - 812
DO  - 10.2298/HEMIND120112028V
ER  - 
@article{
author = "Vukoje, Ivana D. and Božanić, Dušan K. and Džunuzović, Jasna V. and Bogdanović, Una and Vodnik, Vesna",
year = "2012",
abstract = "The aim of this study was to investigate and compare the changes in surface plasmon resonance (SPR) of silver (Ag) hydrosol and organosols obtained by experimental and theoretical approaches. Silver nanoparticles (Ag NPs) of 5 +/- 1.5 nm in diameter were prepared in water by reduction of silver nitrate with sodium borohydride. Nanoparticles were subsequently transferred into different organic solvents (chloroform, hexane, toluene, 1,2-dichlorobenzene) using oleylamine as a transfer agent. These solvents were chosen because of the differences in their refractive indices. Using UV-Vis absorption spectrophotometry and transmission electron microscopy (TEM), we confirmed that there were no shape and size changes of the nanoparticles upon the transfer to the organic phase. The absorption spectra of the obtained Ag organosols showed changes only in the position of the SPR band depending on the dielectric property of the used solvent. To analyze these changes, absorption spectra were modelled using Mie theory for small spherical particles. The experimental and theoretical resonance values were compared with those predicted by the Drude model and its limitations in the analysis of absorption behavior of Ag NPs in organic solvents were briefly discussed.",
journal = "Hemijska industrija",
title = "Surface plasmon resonance of Ag organosols: Experimental and theoretical investigations",
volume = "66",
number = "6",
pages = "805-812",
doi = "10.2298/HEMIND120112028V"
}
Vukoje, I. D., Božanić, D. K., Džunuzović, J. V., Bogdanović, U.,& Vodnik, V.. (2012). Surface plasmon resonance of Ag organosols: Experimental and theoretical investigations. in Hemijska industrija, 66(6), 805-812.
https://doi.org/10.2298/HEMIND120112028V
Vukoje ID, Božanić DK, Džunuzović JV, Bogdanović U, Vodnik V. Surface plasmon resonance of Ag organosols: Experimental and theoretical investigations. in Hemijska industrija. 2012;66(6):805-812.
doi:10.2298/HEMIND120112028V .
Vukoje, Ivana D., Božanić, Dušan K., Džunuzović, Jasna V., Bogdanović, Una, Vodnik, Vesna, "Surface plasmon resonance of Ag organosols: Experimental and theoretical investigations" in Hemijska industrija, 66, no. 6 (2012):805-812,
https://doi.org/10.2298/HEMIND120112028V . .
2
2
2