TY  - JOUR
AU  - Mašojević, Dijana
AU  - Stamenović, Una
AU  - Otoničar, Mojca
AU  - Davidović, Slađana
AU  - Škapin, Srečo Davor
AU  - Barudžija, Tanja
AU  - Vodnik, Vesna
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10657
AB  - A novel and effective antibacterial agent based on a combination of copper nanoparticles (CuNPs) and polypyrrole (PPy) is presented. By using a straightforward in situ polymerization method in water, a copper/polypyrrole (Cu/PPy) nanocomposite with spherical CuNPs, around 25 nm in diameter, uniformly dispersed throughout a granular PPy matrix, was characterized and subjected to determination of antibacterial activity toward E. coli, and S. aureus. In this survey, the synergistic engagement of various features of CuNPs and PPy against bacteria was somewhat expected. After a 24 h interaction with S. aureus, already 2 ppm of Cu/PPy with only 9.45 wt% content of Cu is acting almost completely cidal, with 99.17 % bacterial growth inhibition, while 10 ppm has a cidal value of 99.99 % at the same time. Safe and environmentally acceptable concentrations of Cu/PPy indicate that it is convenient as an antibacterial agent for wider use.
T2  - Materials Letters
T1  - Evaluation of the antibacterial effectiveness of novel copper/polypyrrole nanocomposite
VL  - 338
SP  - 134051
DO  - 10.1016/j.matlet.2023.134051
ER  - 

@article{
author = "Mašojević, Dijana and Stamenović, Una and Otoničar, Mojca and Davidović, Slađana and Škapin, Srečo Davor and Barudžija, Tanja and Vodnik, Vesna",
year = "2023",
abstract = "A novel and effective antibacterial agent based on a combination of copper nanoparticles (CuNPs) and polypyrrole (PPy) is presented. By using a straightforward in situ polymerization method in water, a copper/polypyrrole (Cu/PPy) nanocomposite with spherical CuNPs, around 25 nm in diameter, uniformly dispersed throughout a granular PPy matrix, was characterized and subjected to determination of antibacterial activity toward E. coli, and S. aureus. In this survey, the synergistic engagement of various features of CuNPs and PPy against bacteria was somewhat expected. After a 24 h interaction with S. aureus, already 2 ppm of Cu/PPy with only 9.45 wt% content of Cu is acting almost completely cidal, with 99.17 % bacterial growth inhibition, while 10 ppm has a cidal value of 99.99 % at the same time. Safe and environmentally acceptable concentrations of Cu/PPy indicate that it is convenient as an antibacterial agent for wider use.",
journal = "Materials Letters",
title = "Evaluation of the antibacterial effectiveness of novel copper/polypyrrole nanocomposite",
volume = "338",
pages = "134051",
doi = "10.1016/j.matlet.2023.134051"
}

Mašojević, D., Stamenović, U., Otoničar, M., Davidović, S., Škapin, S. D., Barudžija, T.,& Vodnik, V.. (2023). Evaluation of the antibacterial effectiveness of novel copper/polypyrrole nanocomposite. in Materials Letters, 338, 134051.
https://doi.org/10.1016/j.matlet.2023.134051

Mašojević D, Stamenović U, Otoničar M, Davidović S, Škapin SD, Barudžija T, Vodnik V. Evaluation of the antibacterial effectiveness of novel copper/polypyrrole nanocomposite. in Materials Letters. 2023;338:134051.
doi:10.1016/j.matlet.2023.134051 .

Mašojević, Dijana, Stamenović, Una, Otoničar, Mojca, Davidović, Slađana, Škapin, Srečo Davor, Barudžija, Tanja, Vodnik, Vesna, "Evaluation of the antibacterial effectiveness of novel copper/polypyrrole nanocomposite" in Materials Letters, 338 (2023):134051,
https://doi.org/10.1016/j.matlet.2023.134051 . .

TY  - CONF
AU  - Stamenović, Una
AU  - Vodnik, Vesna
AU  - Mašojević, Dijana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12534
AB  - A special group of functional materials with advanced features and accordingly promising applications are the nanocomposites of the metal nanoparticles (MNPs) - gold (Au), silver (Ag), and copper (Cu) and intrinsically conductive polymers - polyaniline and polypyrrole [1-7]. Thanks to the characteristics of these MNPs such as tunability of the plasmon resonance through variation of their size, shape, and composition, in combination with polymers, it is possible to create nanocomposites for specific biomedical and catalytic use as a variety of biological/catalytic processes occurring at nanometer scale. These processes are also related to the surface effects of the MNPs, i.e. the reactive (111) crystallographic planes present on their surface, together with the electrical characteristics and morphology of the polymer, as well as the synergistic activity of both components. Biocompatible polymers with good conductivity and electrochemical activity, such as polyaniline or polypyrrole, are good choices for the formation of functional composites with these MNPs, by in-situ polymerization processes. In addition, they protect the MNPs from agglomeration or oxidation and improve their physicochemical characteristics, functions, and variety of applications. The electrocatalytic response of the different prepared nanocomposites for oxygen reduction reaction, and direct borohydride fuel cells, together with their antimicrobial activity, currently investigated in this field in our group, are the subject of the presented work.
PB  - Hungary : University of Szeged
C3  - 29th International Symposium on Analytical and Environmental Problems : Proceedings
T1  - Biological and catalytic active nanocomposites of metal nanoparticles (Ag, Au, and Cu) and conductive polymers (polyaniline and polypyrrole) for various applications
SP  - 308
EP  - 308
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12534
ER  - 

@conference{
author = "Stamenović, Una and Vodnik, Vesna and Mašojević, Dijana",
year = "2023",
abstract = "A special group of functional materials with advanced features and accordingly promising applications are the nanocomposites of the metal nanoparticles (MNPs) - gold (Au), silver (Ag), and copper (Cu) and intrinsically conductive polymers - polyaniline and polypyrrole [1-7]. Thanks to the characteristics of these MNPs such as tunability of the plasmon resonance through variation of their size, shape, and composition, in combination with polymers, it is possible to create nanocomposites for specific biomedical and catalytic use as a variety of biological/catalytic processes occurring at nanometer scale. These processes are also related to the surface effects of the MNPs, i.e. the reactive (111) crystallographic planes present on their surface, together with the electrical characteristics and morphology of the polymer, as well as the synergistic activity of both components. Biocompatible polymers with good conductivity and electrochemical activity, such as polyaniline or polypyrrole, are good choices for the formation of functional composites with these MNPs, by in-situ polymerization processes. In addition, they protect the MNPs from agglomeration or oxidation and improve their physicochemical characteristics, functions, and variety of applications. The electrocatalytic response of the different prepared nanocomposites for oxygen reduction reaction, and direct borohydride fuel cells, together with their antimicrobial activity, currently investigated in this field in our group, are the subject of the presented work.",
publisher = "Hungary : University of Szeged",
journal = "29th International Symposium on Analytical and Environmental Problems : Proceedings",
title = "Biological and catalytic active nanocomposites of metal nanoparticles (Ag, Au, and Cu) and conductive polymers (polyaniline and polypyrrole) for various applications",
pages = "308-308",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12534"
}

Stamenović, U., Vodnik, V.,& Mašojević, D.. (2023). Biological and catalytic active nanocomposites of metal nanoparticles (Ag, Au, and Cu) and conductive polymers (polyaniline and polypyrrole) for various applications. in 29th International Symposium on Analytical and Environmental Problems : Proceedings
Hungary : University of Szeged., 308-308.
https://hdl.handle.net/21.15107/rcub_vinar_12534

Stamenović U, Vodnik V, Mašojević D. Biological and catalytic active nanocomposites of metal nanoparticles (Ag, Au, and Cu) and conductive polymers (polyaniline and polypyrrole) for various applications. in 29th International Symposium on Analytical and Environmental Problems : Proceedings. 2023;:308-308.
https://hdl.handle.net/21.15107/rcub_vinar_12534 .

Stamenović, Una, Vodnik, Vesna, Mašojević, Dijana, "Biological and catalytic active nanocomposites of metal nanoparticles (Ag, Au, and Cu) and conductive polymers (polyaniline and polypyrrole) for various applications" in 29th International Symposium on Analytical and Environmental Problems : Proceedings (2023):308-308,
https://hdl.handle.net/21.15107/rcub_vinar_12534 .

TY  - CONF
AU  - Mašojević, Dijana
AU  - Vodnik, Vesna
AU  - Spasojević, J.
AU  - Barudžija, Tanja
AU  - Otoničar, Mojca
AU  - Davidović, Slađana
AU  - Stamenović, Una
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12535
AB  - A novel and favorable antibacterial agent as a combination of copper nanoparticles (CuNPs) and polypyrrole (PPy) is presented. By simple in situ polymerization method, copper/polypyrrole (Cu/PPy) nanocomposite with spherical CuNPs, around 25 nm in diameter, uniformly dispersed throughout PPy matrix with granular morphology, was characterized and subjected to determination of antibacterial activity toward bacteria Escherichia coli and Staphylococcus aureus. Knowing that when acting alone, CuNPs and PPy have already shown antimicrobial responce, their mutual and synergetic engagement against bacteria in this survey is somewhat expected. After a twenty-four-hour interaction with S. aureus, already 2 ppm of Cu/PPy with only 9.45 wt% content of Cu is acting almost completely cidal, with 99.17% of bacterial growth inhibition. Such nanocomposite could easily find application in water disinfection, soil sterilization and food preservation.
PB  - Belgrade : Society of Physical Chemists of Serbia
C3  - PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Book of abstracts
T1  - Antibacterial activity of copper/polypyrrole nanocomposite
SP  - 174
EP  - 174
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12535
ER  - 

@conference{
author = "Mašojević, Dijana and Vodnik, Vesna and Spasojević, J. and Barudžija, Tanja and Otoničar, Mojca and Davidović, Slađana and Stamenović, Una",
year = "2022",
abstract = "A novel and favorable antibacterial agent as a combination of copper nanoparticles (CuNPs) and polypyrrole (PPy) is presented. By simple in situ polymerization method, copper/polypyrrole (Cu/PPy) nanocomposite with spherical CuNPs, around 25 nm in diameter, uniformly dispersed throughout PPy matrix with granular morphology, was characterized and subjected to determination of antibacterial activity toward bacteria Escherichia coli and Staphylococcus aureus. Knowing that when acting alone, CuNPs and PPy have already shown antimicrobial responce, their mutual and synergetic engagement against bacteria in this survey is somewhat expected. After a twenty-four-hour interaction with S. aureus, already 2 ppm of Cu/PPy with only 9.45 wt% content of Cu is acting almost completely cidal, with 99.17% of bacterial growth inhibition. Such nanocomposite could easily find application in water disinfection, soil sterilization and food preservation.",
publisher = "Belgrade : Society of Physical Chemists of Serbia",
journal = "PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Book of abstracts",
title = "Antibacterial activity of copper/polypyrrole nanocomposite",
pages = "174-174",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12535"
}

Mašojević, D., Vodnik, V., Spasojević, J., Barudžija, T., Otoničar, M., Davidović, S.,& Stamenović, U.. (2022). Antibacterial activity of copper/polypyrrole nanocomposite. in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Book of abstracts
Belgrade : Society of Physical Chemists of Serbia., 174-174.
https://hdl.handle.net/21.15107/rcub_vinar_12535

Mašojević D, Vodnik V, Spasojević J, Barudžija T, Otoničar M, Davidović S, Stamenović U. Antibacterial activity of copper/polypyrrole nanocomposite. in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Book of abstracts. 2022;:174-174.
https://hdl.handle.net/21.15107/rcub_vinar_12535 .

Mašojević, Dijana, Vodnik, Vesna, Spasojević, J., Barudžija, Tanja, Otoničar, Mojca, Davidović, Slađana, Stamenović, Una, "Antibacterial activity of copper/polypyrrole nanocomposite" in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Book of abstracts (2022):174-174,
https://hdl.handle.net/21.15107/rcub_vinar_12535 .

TY  - CONF
AU  - Mašojević, Dijana
AU  - Vodnik, Vesna
AU  - Spasojević, Jelena
AU  - Barudžija, Tanja
AU  - Otoničar, Mojca
AU  - Davidović, Slađana
AU  - Stamenović, Una
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12536
AB  - A novel and favorable antibacterial agent as a combination of copper nanoparticles (CuNPs) and polypyrrole (PPy) is presented. By simple in situ polymerization method, copper/polypyrrole (Cu/PPy) nanocomposite with spherical CuNPs, around 25 nm in diameter, uniformly dispersed throughout PPy matrix with granular morphology, was characterized and subjected to determination of antibacterial activity toward bacteria Escherichia coli and Staphylococcus aureus. Knowing that when acting alone, CuNPs and PPy have already shown antimicrobial responce, their mutual and synergetic engagement against bacteria in this survey is somewhat expected. After a twenty-fourhour interaction with S. aureus, already 2 ppm of Cu/PPy with only 9.45 wt% content of Cu is acting almost completely cidal, with 99.17% of bacterial growth inhibition. Such nanocomposite could easily find application in water disinfection, soil sterilization and food preservation.
PB  - Belgrade : Society of Physical Chemists of Serbia
C3  - PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings
T1  - Antibacterial activity of copper/polypyrrole nanocomposite
VL  - 2
SP  - 629
EP  - 632
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12536
ER  - 

@conference{
author = "Mašojević, Dijana and Vodnik, Vesna and Spasojević, Jelena and Barudžija, Tanja and Otoničar, Mojca and Davidović, Slađana and Stamenović, Una",
year = "2022",
abstract = "A novel and favorable antibacterial agent as a combination of copper nanoparticles (CuNPs) and polypyrrole (PPy) is presented. By simple in situ polymerization method, copper/polypyrrole (Cu/PPy) nanocomposite with spherical CuNPs, around 25 nm in diameter, uniformly dispersed throughout PPy matrix with granular morphology, was characterized and subjected to determination of antibacterial activity toward bacteria Escherichia coli and Staphylococcus aureus. Knowing that when acting alone, CuNPs and PPy have already shown antimicrobial responce, their mutual and synergetic engagement against bacteria in this survey is somewhat expected. After a twenty-fourhour interaction with S. aureus, already 2 ppm of Cu/PPy with only 9.45 wt% content of Cu is acting almost completely cidal, with 99.17% of bacterial growth inhibition. Such nanocomposite could easily find application in water disinfection, soil sterilization and food preservation.",
publisher = "Belgrade : Society of Physical Chemists of Serbia",
journal = "PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings",
title = "Antibacterial activity of copper/polypyrrole nanocomposite",
volume = "2",
pages = "629-632",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12536"
}

Mašojević, D., Vodnik, V., Spasojević, J., Barudžija, T., Otoničar, M., Davidović, S.,& Stamenović, U.. (2022). Antibacterial activity of copper/polypyrrole nanocomposite. in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings
Belgrade : Society of Physical Chemists of Serbia., 2, 629-632.
https://hdl.handle.net/21.15107/rcub_vinar_12536

Mašojević D, Vodnik V, Spasojević J, Barudžija T, Otoničar M, Davidović S, Stamenović U. Antibacterial activity of copper/polypyrrole nanocomposite. in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings. 2022;2:629-632.
https://hdl.handle.net/21.15107/rcub_vinar_12536 .

Mašojević, Dijana, Vodnik, Vesna, Spasojević, Jelena, Barudžija, Tanja, Otoničar, Mojca, Davidović, Slađana, Stamenović, Una, "Antibacterial activity of copper/polypyrrole nanocomposite" in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings, 2 (2022):629-632,
https://hdl.handle.net/21.15107/rcub_vinar_12536 .

TY  - CONF
AU  - Mašojević, Dijana
AU  - Stamenović, Una
AU  - Vodnik, Vesna
AU  - Barudžija, Tanja
AU  - Škapin, Srečo
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12486
AB  - Nanocomposite materials based on conductive polymers and metal nanoparticles made an appearance as a new class of hybrid materials with considerable potential for application in different fields, from medical and food/wastewater treatments to catalysis and sensors. Besides their low cost and ease of preparation, their optical and mechanical characteristics are tunable, while individual features of each component become more obvious, and new ones appear. In this group of materials, newly, chemically synthesized Cobalt@Polypyrrole (Co@PPy) and Cobalt/Gold@Polypyrrole (Co/Au@PPy) nanocomposites could be classified. With low electrode potential, Co nanoparticles (CoNPs) are unstable, prone to oxidation and agglomeration. For this reason, both nanocomposites were synthesized under argon. Firstly, CoNPs were synthesized in water, by simple reduction of Co2+ by sodium borohydride and in the presence of sodium dodecyl sulfate as a surfactant that will stabilize formed Co nuclei and affect their further growth. After adding pyrrole monomer, the polymerization reaction was initiated by ammonium peroxydisulfate and Au3+ for Co@PPy and Co/Au@PPy, respectively. Together with pyrrole monomer oxidation to final polymer structure by Au3+, these ions are reduced by nitrogen atoms from secondary amino groups in pyrrole units, forming AuNPs incorporated throughout polymer matrix. Conductive form of both nanocomposites, i.e., the presence of bipolarons, was confirmed by UV-Vis and FTIR analysis, while FESEM showed granular morphologies. With both nanocomposites having satisfactory percentage of metals incorporated, it could be expected that such materials could find their place in the field of catalysis, direct borohydride fuel cell, or wastewater treatment, where heavy, toxic metals such As(III) is, represent a great danger for the environment.
PB  - Belgrade : Materials Research Society of Serbia – MRS-Serbia
C3  - YUCOMAT 2021 : Twenty-second Annual Conference YUCOMAT 2021 : Programme and the Book of abstracts
T1  - Nanostructured Cobalt@Polypyrrole and Cobalt/Gold@Polypyrrole materials: synthesis, optical and structural properties
SP  - 135
EP  - 135
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12486
ER  - 

@conference{
author = "Mašojević, Dijana and Stamenović, Una and Vodnik, Vesna and Barudžija, Tanja and Škapin, Srečo",
year = "2021",
abstract = "Nanocomposite materials based on conductive polymers and metal nanoparticles made an appearance as a new class of hybrid materials with considerable potential for application in different fields, from medical and food/wastewater treatments to catalysis and sensors. Besides their low cost and ease of preparation, their optical and mechanical characteristics are tunable, while individual features of each component become more obvious, and new ones appear. In this group of materials, newly, chemically synthesized Cobalt@Polypyrrole (Co@PPy) and Cobalt/Gold@Polypyrrole (Co/Au@PPy) nanocomposites could be classified. With low electrode potential, Co nanoparticles (CoNPs) are unstable, prone to oxidation and agglomeration. For this reason, both nanocomposites were synthesized under argon. Firstly, CoNPs were synthesized in water, by simple reduction of Co2+ by sodium borohydride and in the presence of sodium dodecyl sulfate as a surfactant that will stabilize formed Co nuclei and affect their further growth. After adding pyrrole monomer, the polymerization reaction was initiated by ammonium peroxydisulfate and Au3+ for Co@PPy and Co/Au@PPy, respectively. Together with pyrrole monomer oxidation to final polymer structure by Au3+, these ions are reduced by nitrogen atoms from secondary amino groups in pyrrole units, forming AuNPs incorporated throughout polymer matrix. Conductive form of both nanocomposites, i.e., the presence of bipolarons, was confirmed by UV-Vis and FTIR analysis, while FESEM showed granular morphologies. With both nanocomposites having satisfactory percentage of metals incorporated, it could be expected that such materials could find their place in the field of catalysis, direct borohydride fuel cell, or wastewater treatment, where heavy, toxic metals such As(III) is, represent a great danger for the environment.",
publisher = "Belgrade : Materials Research Society of Serbia – MRS-Serbia",
journal = "YUCOMAT 2021 : Twenty-second Annual Conference YUCOMAT 2021 : Programme and the Book of abstracts",
title = "Nanostructured Cobalt@Polypyrrole and Cobalt/Gold@Polypyrrole materials: synthesis, optical and structural properties",
pages = "135-135",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12486"
}

Mašojević, D., Stamenović, U., Vodnik, V., Barudžija, T.,& Škapin, S.. (2021). Nanostructured Cobalt@Polypyrrole and Cobalt/Gold@Polypyrrole materials: synthesis, optical and structural properties. in YUCOMAT 2021 : Twenty-second Annual Conference YUCOMAT 2021 : Programme and the Book of abstracts
Belgrade : Materials Research Society of Serbia – MRS-Serbia., 135-135.
https://hdl.handle.net/21.15107/rcub_vinar_12486

Mašojević D, Stamenović U, Vodnik V, Barudžija T, Škapin S. Nanostructured Cobalt@Polypyrrole and Cobalt/Gold@Polypyrrole materials: synthesis, optical and structural properties. in YUCOMAT 2021 : Twenty-second Annual Conference YUCOMAT 2021 : Programme and the Book of abstracts. 2021;:135-135.
https://hdl.handle.net/21.15107/rcub_vinar_12486 .

Mašojević, Dijana, Stamenović, Una, Vodnik, Vesna, Barudžija, Tanja, Škapin, Srečo, "Nanostructured Cobalt@Polypyrrole and Cobalt/Gold@Polypyrrole materials: synthesis, optical and structural properties" in YUCOMAT 2021 : Twenty-second Annual Conference YUCOMAT 2021 : Programme and the Book of abstracts (2021):135-135,
https://hdl.handle.net/21.15107/rcub_vinar_12486 .