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 . .

TY  - JOUR
AU  - Vukoje, Ivana D.
AU  - Lazić, Vesna M.
AU  - Vodnik, Vesna
AU  - Mitrić, Miodrag
AU  - Jokić, Bojan M.
AU  - Ahrenkiel, Scott Phillip
AU  - Nedeljković, Jovan
AU  - Radetić, Maja M.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5957
AB  - The effect of cotton fabric pretreatment with biopolymer chitosan (CHT) on deposition of colloidal triangular silver nanoplates was studied. Also, the influence of deposited silver nanoparticles on color and antimicrobial activity of cotton fabrics was evaluated. Characterization of colloidal silver nanoparticles as well as silver nanoparticles deposited on cotton fabrics was performed using electron microscopy (TEM and FESEM), XRD analysis, atomic absorption spectroscopy, UV-Vis absorption, and reflectance spectroscopy. The cotton fabric turned from white to blue color upon deposition of triangular silver nanoplates. Antimicrobial activity of CHT pretreated cotton fabric impregnated with silver nanoparticles was tested against Gram-negative bacteria Escherichia coli, Gram-positive bacteria Staphylococcus aureus, and fungi Candida albicans. Deposited silver nanoparticles imparted excellent antimicrobial properties to cotton fabric. The standard sterilization procedure of cotton fabric for antimicrobial activity testing resulted in color change of the fabric from blue to yellow. This color change is most likely consequence of transformation of triangular silver nanoplates into nanodiscs and/or their agglomeration into spheroids.
T2  - Journal of Materials Science
T1  - The influence of triangular silver nanoplates on antimicrobial activity and color of cotton fabrics pretreated with chitosan
VL  - 49
IS  - 13
SP  - 4453
EP  - 4460
DO  - 10.1007/s10853-014-8142-2
ER  - 

@article{
author = "Vukoje, Ivana D. and Lazić, Vesna M. and Vodnik, Vesna and Mitrić, Miodrag and Jokić, Bojan M. and Ahrenkiel, Scott Phillip and Nedeljković, Jovan and Radetić, Maja M.",
year = "2014",
abstract = "The effect of cotton fabric pretreatment with biopolymer chitosan (CHT) on deposition of colloidal triangular silver nanoplates was studied. Also, the influence of deposited silver nanoparticles on color and antimicrobial activity of cotton fabrics was evaluated. Characterization of colloidal silver nanoparticles as well as silver nanoparticles deposited on cotton fabrics was performed using electron microscopy (TEM and FESEM), XRD analysis, atomic absorption spectroscopy, UV-Vis absorption, and reflectance spectroscopy. The cotton fabric turned from white to blue color upon deposition of triangular silver nanoplates. Antimicrobial activity of CHT pretreated cotton fabric impregnated with silver nanoparticles was tested against Gram-negative bacteria Escherichia coli, Gram-positive bacteria Staphylococcus aureus, and fungi Candida albicans. Deposited silver nanoparticles imparted excellent antimicrobial properties to cotton fabric. The standard sterilization procedure of cotton fabric for antimicrobial activity testing resulted in color change of the fabric from blue to yellow. This color change is most likely consequence of transformation of triangular silver nanoplates into nanodiscs and/or their agglomeration into spheroids.",
journal = "Journal of Materials Science",
title = "The influence of triangular silver nanoplates on antimicrobial activity and color of cotton fabrics pretreated with chitosan",
volume = "49",
number = "13",
pages = "4453-4460",
doi = "10.1007/s10853-014-8142-2"
}

Vukoje, I. D., Lazić, V. M., Vodnik, V., Mitrić, M., Jokić, B. M., Ahrenkiel, S. P., Nedeljković, J.,& Radetić, M. M.. (2014). The influence of triangular silver nanoplates on antimicrobial activity and color of cotton fabrics pretreated with chitosan. in Journal of Materials Science, 49(13), 4453-4460.
https://doi.org/10.1007/s10853-014-8142-2

Vukoje ID, Lazić VM, Vodnik V, Mitrić M, Jokić BM, Ahrenkiel SP, Nedeljković J, Radetić MM. The influence of triangular silver nanoplates on antimicrobial activity and color of cotton fabrics pretreated with chitosan. in Journal of Materials Science. 2014;49(13):4453-4460.
doi:10.1007/s10853-014-8142-2 .

Vukoje, Ivana D., Lazić, Vesna M., Vodnik, Vesna, Mitrić, Miodrag, Jokić, Bojan M., Ahrenkiel, Scott Phillip, Nedeljković, Jovan, Radetić, Maja M., "The influence of triangular silver nanoplates on antimicrobial activity and color of cotton fabrics pretreated with chitosan" in Journal of Materials Science, 49, no. 13 (2014):4453-4460,
https://doi.org/10.1007/s10853-014-8142-2 . .

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 . .

TY  - JOUR
AU  - Vukoje, Ivana D.
AU  - Džunuzović, Enis S.
AU  - Vodnik, Vesna
AU  - Dimitrijević, Suzana I.
AU  - Ahrenkiel, Scott Phillip
AU  - Nedeljković, Jovan
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6079
AB  - Composite consisting of silver nanoparticles coordinated to poly(GMA-co-EGDMA) macroporous copolymer was prepared by attachment of amino group to the poly(GMA-co-EGDMA) in the reaction with ethylene diamine, and consequent reduction of silver ions with amino groups at elevated temperature. The infrared measurements indicated that surface of silver nanoparticles is passivated through the coordination of the lone pair on the N atom of the imine present in the skeleton of the poly(GMA-co-EGDMA) copolymer. The inductively coupled plasma atomic emission, UV-Vis reflection spectroscopy, X-ray diffraction, and transmission electron microscopy measurements revealed the high content (52 wt%) of well-separated silver nanoparticles in the size range of 5-10 nm onto composite. Antimicrobial efficiency of composite was tested against Gram-negative bacteria E. coli, Gram-positive bacteria S. aureus, and fungus C. albicans in wide concentration range of composite. The composite ensured almost maximum reduction of both bacteria, while the fungi reduction reached 96.5 %.
T2  - Journal of Materials Science
T1  - Synthesis, characterization, and antimicrobial activity of poly(GMA-co-EGDMA) polymer decorated with silver nanoparticles
VL  - 49
IS  - 19
SP  - 6838
EP  - 6844
DO  - 10.1007/s10853-014-8386-x
ER  - 

@article{
author = "Vukoje, Ivana D. and Džunuzović, Enis S. and Vodnik, Vesna and Dimitrijević, Suzana I. and Ahrenkiel, Scott Phillip and Nedeljković, Jovan",
year = "2014",
abstract = "Composite consisting of silver nanoparticles coordinated to poly(GMA-co-EGDMA) macroporous copolymer was prepared by attachment of amino group to the poly(GMA-co-EGDMA) in the reaction with ethylene diamine, and consequent reduction of silver ions with amino groups at elevated temperature. The infrared measurements indicated that surface of silver nanoparticles is passivated through the coordination of the lone pair on the N atom of the imine present in the skeleton of the poly(GMA-co-EGDMA) copolymer. The inductively coupled plasma atomic emission, UV-Vis reflection spectroscopy, X-ray diffraction, and transmission electron microscopy measurements revealed the high content (52 wt%) of well-separated silver nanoparticles in the size range of 5-10 nm onto composite. Antimicrobial efficiency of composite was tested against Gram-negative bacteria E. coli, Gram-positive bacteria S. aureus, and fungus C. albicans in wide concentration range of composite. The composite ensured almost maximum reduction of both bacteria, while the fungi reduction reached 96.5 %.",
journal = "Journal of Materials Science",
title = "Synthesis, characterization, and antimicrobial activity of poly(GMA-co-EGDMA) polymer decorated with silver nanoparticles",
volume = "49",
number = "19",
pages = "6838-6844",
doi = "10.1007/s10853-014-8386-x"
}

Vukoje, I. D., Džunuzović, E. S., Vodnik, V., Dimitrijević, S. I., Ahrenkiel, S. P.,& Nedeljković, J.. (2014). Synthesis, characterization, and antimicrobial activity of poly(GMA-co-EGDMA) polymer decorated with silver nanoparticles. in Journal of Materials Science, 49(19), 6838-6844.
https://doi.org/10.1007/s10853-014-8386-x

Vukoje ID, Džunuzović ES, Vodnik V, Dimitrijević SI, Ahrenkiel SP, Nedeljković J. Synthesis, characterization, and antimicrobial activity of poly(GMA-co-EGDMA) polymer decorated with silver nanoparticles. in Journal of Materials Science. 2014;49(19):6838-6844.
doi:10.1007/s10853-014-8386-x .

Vukoje, Ivana D., Džunuzović, Enis S., Vodnik, Vesna, Dimitrijević, Suzana I., Ahrenkiel, Scott Phillip, Nedeljković, Jovan, "Synthesis, characterization, and antimicrobial activity of poly(GMA-co-EGDMA) polymer decorated with silver nanoparticles" in Journal of Materials Science, 49, no. 19 (2014):6838-6844,
https://doi.org/10.1007/s10853-014-8386-x . .