TY  - JOUR
AU  - Stamenovic, Una
AU  - Davidović, Slađana
AU  - Petrovic, Sandra
AU  - Leskovac, Andreja
AU  - Stoiljkovic, Milovan
AU  - Vodnik, Vesna
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4852
AB  - Two silver-polyaniline/polyvinylpyrrolidone (Ag-PANI/PVP) nanocomposites were prepared using in situ integration of silver nanoparticles (AgNPs) during oxidative aniline polymerization, accelerated by the presence of PVP, which as well minimized the risk of particle agglomeration and macroscopic precipitation. Both nanocomposites have similar silver content (similar to 44 wt% Ag) but different morphological features of AgNPs (spheres/triangles) and polymers (granular/wrinkling pattern). Several spectroscopic, macroscopic, and analytical techniques, microscopy, and surface analysis methods have been used to analyze their physical and chemical properties. Investigation of their antimicrobial potential and possible application as an effective weapon against indicator microbial strains, E. coli, S. aureus, and C. albicans, has shown inhibition of microbial growth by more than 90%, even at low composite concentrations (5 ppm) and short contact time (4 h). A biosafety assessment of Ag-PANI/PVP that comprised testing the genotoxicity and redox modulating activity was performed using human peripheral blood cells as a model system. The obtained results have shown that the investigated Ag-PANI/PVP exhibited significant prooxidant and cytostatic effects (p   lt 0.05) with no apparent potential to induce DNA damage. Although precautions should be taken to protect human health, the significant antimicrobial efficiency of Ag-PANI/PVP makes it suitable for further studies and applications in non-medical areas, such as wastewater treatment.
T2  - New Journal of Chemistry
T1  - Antimicrobial and biological effects of polyaniline/polyvinylpyrrolidone nanocomposites loaded with silver nanospheres/triangles
EP  - 12720
IS  - 28
SP  - 12711
VL  - 45
DO  - 10.1039/d1nj02729h
ER  - 

@article{
author = "Stamenovic, Una and Davidović, Slađana and Petrovic, Sandra and Leskovac, Andreja and Stoiljkovic, Milovan and Vodnik, Vesna",
year = "2021",
abstract = "Two silver-polyaniline/polyvinylpyrrolidone (Ag-PANI/PVP) nanocomposites were prepared using in situ integration of silver nanoparticles (AgNPs) during oxidative aniline polymerization, accelerated by the presence of PVP, which as well minimized the risk of particle agglomeration and macroscopic precipitation. Both nanocomposites have similar silver content (similar to 44 wt% Ag) but different morphological features of AgNPs (spheres/triangles) and polymers (granular/wrinkling pattern). Several spectroscopic, macroscopic, and analytical techniques, microscopy, and surface analysis methods have been used to analyze their physical and chemical properties. Investigation of their antimicrobial potential and possible application as an effective weapon against indicator microbial strains, E. coli, S. aureus, and C. albicans, has shown inhibition of microbial growth by more than 90%, even at low composite concentrations (5 ppm) and short contact time (4 h). A biosafety assessment of Ag-PANI/PVP that comprised testing the genotoxicity and redox modulating activity was performed using human peripheral blood cells as a model system. The obtained results have shown that the investigated Ag-PANI/PVP exhibited significant prooxidant and cytostatic effects (p   lt 0.05) with no apparent potential to induce DNA damage. Although precautions should be taken to protect human health, the significant antimicrobial efficiency of Ag-PANI/PVP makes it suitable for further studies and applications in non-medical areas, such as wastewater treatment.",
journal = "New Journal of Chemistry",
title = "Antimicrobial and biological effects of polyaniline/polyvinylpyrrolidone nanocomposites loaded with silver nanospheres/triangles",
pages = "12720-12711",
number = "28",
volume = "45",
doi = "10.1039/d1nj02729h"
}

Stamenovic, U., Davidović, S., Petrovic, S., Leskovac, A., Stoiljkovic, M.,& Vodnik, V.. (2021). Antimicrobial and biological effects of polyaniline/polyvinylpyrrolidone nanocomposites loaded with silver nanospheres/triangles. in New Journal of Chemistry, 45(28), 12711-12720.
https://doi.org/10.1039/d1nj02729h

Stamenovic U, Davidović S, Petrovic S, Leskovac A, Stoiljkovic M, Vodnik V. Antimicrobial and biological effects of polyaniline/polyvinylpyrrolidone nanocomposites loaded with silver nanospheres/triangles. in New Journal of Chemistry. 2021;45(28):12711-12720.
doi:10.1039/d1nj02729h .

Stamenovic, Una, Davidović, Slađana, Petrovic, Sandra, Leskovac, Andreja, Stoiljkovic, Milovan, Vodnik, Vesna, "Antimicrobial and biological effects of polyaniline/polyvinylpyrrolidone nanocomposites loaded with silver nanospheres/triangles" in New Journal of Chemistry, 45, no. 28 (2021):12711-12720,
https://doi.org/10.1039/d1nj02729h . .

TY  - JOUR
AU  - Bogdanović, Una
AU  - Dimitrijević, Suzana
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  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3928
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  lt = 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.
PB  - Elsevier, Amsterdam
T2  - Materials Science & Engineering C-Materials for Biological Applications
T1  - Copper-polyaniline nanocomposite: Role of physicochemical properties on the antimicrobial activity and genotoxicity evaluation
EP  - 60
SP  - 49
VL  - 93
DO  - 10.1016/j.msec.2018.07.067
ER  - 

@article{
author = "Bogdanović, Una and Dimitrijević, Suzana 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  lt = 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.",
publisher = "Elsevier, Amsterdam",
journal = "Materials Science & Engineering C-Materials for Biological Applications",
title = "Copper-polyaniline nanocomposite: Role of physicochemical properties on the antimicrobial activity and genotoxicity evaluation",
pages = "60-49",
volume = "93",
doi = "10.1016/j.msec.2018.07.067"
}

Bogdanović, U., Dimitrijević, S., 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 & Engineering C-Materials for Biological Applications
Elsevier, Amsterdam., 93, 49-60.
https://doi.org/10.1016/j.msec.2018.07.067

Bogdanović U, Dimitrijević S, 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 & Engineering C-Materials for Biological Applications. 2018;93:49-60.
doi:10.1016/j.msec.2018.07.067 .

Bogdanović, Una, Dimitrijević, Suzana, 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 & Engineering C-Materials for Biological Applications, 93 (2018):49-60,
https://doi.org/10.1016/j.msec.2018.07.067 . .