TY  - CONF
AU  - Bogdanović, Una
AU  - Lazić, Vesna
AU  - Vodnik, Vesna
AU  - Budimir, Milica
AU  - Marković, Z.
AU  - Dimitrijević, S.
AU  - Džunuzović, Jasna
PY  - 2014
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6648
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  - Proceedings - 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry „Physical Chemistry 2014“,  September 22-26, Belgrade
T1  - Antibacterial activity of copper nanoparticles
VL  - 2
SP  - 526
EP  - 529
UR  - https://hdl.handle.net/21.15107/rcub_cer_6648
ER  - 

@conference{
author = "Bogdanović, Una and Lazić, Vesna and Vodnik, Vesna and Budimir, Milica and Marković, Z. and Dimitrijević, S. and Džunuzović, Jasna",
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 = "Proceedings - 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry „Physical Chemistry 2014“,  September 22-26, Belgrade",
title = "Antibacterial activity of copper nanoparticles",
volume = "2",
pages = "526-529",
url = "https://hdl.handle.net/21.15107/rcub_cer_6648"
}

Bogdanović, U., Lazić, V., Vodnik, V., Budimir, M., Marković, Z., Dimitrijević, S.,& Džunuzović, J.. (2014). Antibacterial activity of copper nanoparticles. in Proceedings - 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry „Physical Chemistry 2014“,  September 22-26, Belgrade
Society of Physical Chemists of Serbia., 2, 526-529.
https://hdl.handle.net/21.15107/rcub_cer_6648

Bogdanović U, Lazić V, Vodnik V, Budimir M, Marković Z, Dimitrijević S, Džunuzović J. Antibacterial activity of copper nanoparticles. in Proceedings - 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry „Physical Chemistry 2014“,  September 22-26, Belgrade. 2014;2:526-529.
https://hdl.handle.net/21.15107/rcub_cer_6648 .

Bogdanović, Una, Lazić, Vesna, Vodnik, Vesna, Budimir, Milica, Marković, Z., Dimitrijević, S., Džunuzović, Jasna, "Antibacterial activity of copper nanoparticles" in Proceedings - 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry „Physical Chemistry 2014“,  September 22-26, Belgrade, 2 (2014):526-529,
https://hdl.handle.net/21.15107/rcub_cer_6648 .

TY  - JOUR
AU  - Vodnik, Vesna
AU  - Šaponjić, Zoran
AU  - Džunuzović, Jasna
AU  - Bogdanovic, Una
AU  - Mitrić, Miodrag
AU  - Nedeljković, Jovan M.
PY  - 2013
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1316
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.
PB  - Oxford : Pergamon-Elsevier Science Ltd
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 and Bogdanovic, Una and Mitrić, Miodrag and Nedeljković, Jovan M.",
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.",
publisher = "Oxford : Pergamon-Elsevier Science Ltd",
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., Bogdanovic, U., Mitrić, M.,& Nedeljković, J. M.. (2013). Anisotropic silver nanoparticles as filler for the formation of hybrid nanocomposites. in Materials Research Bulletin
Oxford : Pergamon-Elsevier Science Ltd., 48(1), 52-57.
https://doi.org/10.1016/j.materresbull.2012.09.059

Vodnik V, Šaponjić Z, Džunuzović J, Bogdanovic U, Mitrić M, Nedeljković JM. 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, Bogdanovic, Una, Mitrić, Miodrag, Nedeljković, Jovan M., "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 . .

TY  - CONF
AU  - Vukoje, Ivana
AU  - Vodnik, Vesna
AU  - Džunuzović, Jasna
AU  - Džunuzović, Enis
AU  - Bogdanović, Una
AU  - Nedeljković, Jovan
PY  - 2013
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6738
AB  - Nanocomposites (NCs) with different amount of silver nanoparticles (Ag NPs) embedded
in polystyrene (PS) matrix were prepared by in situ radical polymerization. In order to
achieve homogeneous distribution of Ag NPs in the PS matrix, the nearly monodisperse Ag
NPs (7.0 ± 1.5 nm) protected with oleylamine were first synthesized via organic solvothermal
method and further used as a filler. For this purpose, a simple colloidal method
for preparation of Ag NPs in organic solvent was developed. PS was selected as the
polymer matrix based on its optical transparency and high chemical resistance. The gel
permeation chromatography (GPC) measurements showed that the presence of Ag NPs
stabilized with oleylamine during the polymerization of styrene have no influence on the
molecular weight and polydispersity of the PS matrix. The structural properties of the
resulting Ag/PS NCs were characterized by transmission electron microscope and FTIR
spectroscopy. The influence of the presence of Ag NPs and their concentration on the
optical properties of PS matrix was investigated in details using UV-Vis spectroscopy. Since
the PS represents a nonabsorbing medium throughout the visible spectrum, the
improvement of the optical performances of polymer was achieved by incorporation of
the appropriate size Ag NPs with strong plasma resonance absorption.
PB  - Belgrade : Serbian Chemical Society
C3  - 8th International Conference of the Chemical Societies of the South-East European Countries - ICOSECS 8, Belgrade, Serbia, June 27-29, 2013: Book of Abstract
T1  - Optical and structural characterization of silver/polystyrene nanocomposites by in-situ bulk radical polymerization
SP  - 158
EP  - 158
UR  - https://hdl.handle.net/21.15107/rcub_cer_6738
ER  - 

@conference{
author = "Vukoje, Ivana and Vodnik, Vesna and Džunuzović, Jasna and Džunuzović, Enis and Bogdanović, Una and Nedeljković, Jovan",
year = "2013",
abstract = "Nanocomposites (NCs) with different amount of silver nanoparticles (Ag NPs) embedded
in polystyrene (PS) matrix were prepared by in situ radical polymerization. In order to
achieve homogeneous distribution of Ag NPs in the PS matrix, the nearly monodisperse Ag
NPs (7.0 ± 1.5 nm) protected with oleylamine were first synthesized via organic solvothermal
method and further used as a filler. For this purpose, a simple colloidal method
for preparation of Ag NPs in organic solvent was developed. PS was selected as the
polymer matrix based on its optical transparency and high chemical resistance. The gel
permeation chromatography (GPC) measurements showed that the presence of Ag NPs
stabilized with oleylamine during the polymerization of styrene have no influence on the
molecular weight and polydispersity of the PS matrix. The structural properties of the
resulting Ag/PS NCs were characterized by transmission electron microscope and FTIR
spectroscopy. The influence of the presence of Ag NPs and their concentration on the
optical properties of PS matrix was investigated in details using UV-Vis spectroscopy. Since
the PS represents a nonabsorbing medium throughout the visible spectrum, the
improvement of the optical performances of polymer was achieved by incorporation of
the appropriate size Ag NPs with strong plasma resonance absorption.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "8th International Conference of the Chemical Societies of the South-East European Countries - ICOSECS 8, Belgrade, Serbia, June 27-29, 2013: Book of Abstract",
title = "Optical and structural characterization of silver/polystyrene nanocomposites by in-situ bulk radical polymerization",
pages = "158-158",
url = "https://hdl.handle.net/21.15107/rcub_cer_6738"
}

Vukoje, I., Vodnik, V., Džunuzović, J., Džunuzović, E., Bogdanović, U.,& Nedeljković, J.. (2013). Optical and structural characterization of silver/polystyrene nanocomposites by in-situ bulk radical polymerization. in 8th International Conference of the Chemical Societies of the South-East European Countries - ICOSECS 8, Belgrade, Serbia, June 27-29, 2013: Book of Abstract
Belgrade : Serbian Chemical Society., 158-158.
https://hdl.handle.net/21.15107/rcub_cer_6738

Vukoje I, Vodnik V, Džunuzović J, Džunuzović E, Bogdanović U, Nedeljković J. Optical and structural characterization of silver/polystyrene nanocomposites by in-situ bulk radical polymerization. in 8th International Conference of the Chemical Societies of the South-East European Countries - ICOSECS 8, Belgrade, Serbia, June 27-29, 2013: Book of Abstract. 2013;:158-158.
https://hdl.handle.net/21.15107/rcub_cer_6738 .

Vukoje, Ivana, Vodnik, Vesna, Džunuzović, Jasna, Džunuzović, Enis, Bogdanović, Una, Nedeljković, Jovan, "Optical and structural characterization of silver/polystyrene nanocomposites by in-situ bulk radical polymerization" in 8th International Conference of the Chemical Societies of the South-East European Countries - ICOSECS 8, Belgrade, Serbia, June 27-29, 2013: Book of Abstract (2013):158-158,
https://hdl.handle.net/21.15107/rcub_cer_6738 .

TY  - CONF
AU  - Bogdanović, Una
AU  - Vodnik, Vesna
AU  - Vukoje, Ivana
AU  - Džunuzović, Jasna
AU  - Stoiljković, Milovan
AU  - Nedeljković, Jovan
PY  - 2013
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6739
AB  - Combining the electrical, optical, and magnetic properties of polyaniline (PANI) with
excellent chemical and physical properties of gold nanoparticles (Au NPs) is an efficient
way to create novel functional nanomaterials with potential applications in biosensing and
therapy, energy conversion and storage. In the present work, we report polyaniline/gold
nanocomposite (PANI/Au) obtained by two-phase, water/toluene, interfacial chemical
reaction. The polymerization process occurs at the interface of the organic phase (with
aniline) and acidic water solution (with oxidant and Au NPs). Using this strategy, secondary
growth of PANI could be suppressed. Transmission and scanning electron microscopy
measurements were confirmed that PANI was formed as nanofibers decorated with 17 nm
Au NPs. Characterization of the samples performed with UV-Vis and FTIR spectroscopy
and XRD technique are used for description of the optical properties, interaction between
components and structure of PANI/Au system. The obtained results indicate that the
present synthetic route produces the PANI in conductive form (doped emeraldine salt
form) with specific electric behavior, which makes PANI/Au nanocomposite suitable
material for a wide range of applications.
PB  - Belgrade : Serbian Chemical Society
C3  - 8th International Conference of the Chemical Societies of the South-East European Countries - ICOSECS 8, Belgrade, Serbia, June 27-29, 2013: Book of Abstract
T1  - A simple two-phase route to polyaniline/gold nanocomposites
SP  - 148
EP  - 148
UR  - https://hdl.handle.net/21.15107/rcub_cer_6739
ER  - 

@conference{
author = "Bogdanović, Una and Vodnik, Vesna and Vukoje, Ivana and Džunuzović, Jasna and Stoiljković, Milovan and Nedeljković, Jovan",
year = "2013",
abstract = "Combining the electrical, optical, and magnetic properties of polyaniline (PANI) with
excellent chemical and physical properties of gold nanoparticles (Au NPs) is an efficient
way to create novel functional nanomaterials with potential applications in biosensing and
therapy, energy conversion and storage. In the present work, we report polyaniline/gold
nanocomposite (PANI/Au) obtained by two-phase, water/toluene, interfacial chemical
reaction. The polymerization process occurs at the interface of the organic phase (with
aniline) and acidic water solution (with oxidant and Au NPs). Using this strategy, secondary
growth of PANI could be suppressed. Transmission and scanning electron microscopy
measurements were confirmed that PANI was formed as nanofibers decorated with 17 nm
Au NPs. Characterization of the samples performed with UV-Vis and FTIR spectroscopy
and XRD technique are used for description of the optical properties, interaction between
components and structure of PANI/Au system. The obtained results indicate that the
present synthetic route produces the PANI in conductive form (doped emeraldine salt
form) with specific electric behavior, which makes PANI/Au nanocomposite suitable
material for a wide range of applications.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "8th International Conference of the Chemical Societies of the South-East European Countries - ICOSECS 8, Belgrade, Serbia, June 27-29, 2013: Book of Abstract",
title = "A simple two-phase route to polyaniline/gold nanocomposites",
pages = "148-148",
url = "https://hdl.handle.net/21.15107/rcub_cer_6739"
}

Bogdanović, U., Vodnik, V., Vukoje, I., Džunuzović, J., Stoiljković, M.,& Nedeljković, J.. (2013). A simple two-phase route to polyaniline/gold nanocomposites. in 8th International Conference of the Chemical Societies of the South-East European Countries - ICOSECS 8, Belgrade, Serbia, June 27-29, 2013: Book of Abstract
Belgrade : Serbian Chemical Society., 148-148.
https://hdl.handle.net/21.15107/rcub_cer_6739

Bogdanović U, Vodnik V, Vukoje I, Džunuzović J, Stoiljković M, Nedeljković J. A simple two-phase route to polyaniline/gold nanocomposites. in 8th International Conference of the Chemical Societies of the South-East European Countries - ICOSECS 8, Belgrade, Serbia, June 27-29, 2013: Book of Abstract. 2013;:148-148.
https://hdl.handle.net/21.15107/rcub_cer_6739 .

Bogdanović, Una, Vodnik, Vesna, Vukoje, Ivana, Džunuzović, Jasna, Stoiljković, Milovan, Nedeljković, Jovan, "A simple two-phase route to polyaniline/gold nanocomposites" in 8th International Conference of the Chemical Societies of the South-East European Countries - ICOSECS 8, Belgrade, Serbia, June 27-29, 2013: Book of Abstract (2013):148-148,
https://hdl.handle.net/21.15107/rcub_cer_6739 .

TY  - CONF
AU  - Vukoje, Ivana
AU  - Vodnik, Vesna
AU  - Bogdanović, Una
AU  - Džunuzović, Jasna
AU  - Nedeljković, Jovan
PY  - 2012
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6752
AB  - Nanocomposites containing metal nanoparticles, dispersed in electrically conducting
polymers such as polyaniline, show enhanced sensing, electrical and catalytic properties
as compared with those of neat polymer. These composites have generated increasing
interest as advanced technological materials due to synergistic effects of both
components. Here, we report silver/polyaniline (Ag/PANI) nanocomposites obtained
through a two-phase water/toluene interfacial reaction. As prepared silver nanoparticles
in toluene with oleylamine as a reducing and stabilizing agent, were used as nucleation
centers for the polymerization of aniline. Once the polymerization occurs at the
interface of the organic (containing the aniline and the silver nanoparticles) and aqueous
(containing the oxidizing ammonium persulfate agent) phase, the polymer grows around
the silver nanoparticles and forming the nanocomposite structure. The formation of
Ag/PANI nanocomposite was characterized by UV–Vis and FTIR spectroscopy, and
transmission electron microscopy. In contrast to pure PANI, the absorption spectrum of
Ag/PANI nanocomposite showed additional strong band assigned to surface plasmon
resonance absorption of the electrons in the conducting silver bands.
PB  - Belgrade : Agencija FORMAT
C3  - The 3rd International Conference on the Physics of Optical Materials and Devices - Book of abstracts, September 3rd - September 6th, 2012, Belgrade, Serbia
T1  - Two-phase boundary synthesis and optical properties of silver/polyaniline nanocomposites
SP  - 125
EP  - 125
UR  - https://hdl.handle.net/21.15107/rcub_cer_6752
ER  - 

@conference{
author = "Vukoje, Ivana and Vodnik, Vesna and Bogdanović, Una and Džunuzović, Jasna and Nedeljković, Jovan",
year = "2012",
abstract = "Nanocomposites containing metal nanoparticles, dispersed in electrically conducting
polymers such as polyaniline, show enhanced sensing, electrical and catalytic properties
as compared with those of neat polymer. These composites have generated increasing
interest as advanced technological materials due to synergistic effects of both
components. Here, we report silver/polyaniline (Ag/PANI) nanocomposites obtained
through a two-phase water/toluene interfacial reaction. As prepared silver nanoparticles
in toluene with oleylamine as a reducing and stabilizing agent, were used as nucleation
centers for the polymerization of aniline. Once the polymerization occurs at the
interface of the organic (containing the aniline and the silver nanoparticles) and aqueous
(containing the oxidizing ammonium persulfate agent) phase, the polymer grows around
the silver nanoparticles and forming the nanocomposite structure. The formation of
Ag/PANI nanocomposite was characterized by UV–Vis and FTIR spectroscopy, and
transmission electron microscopy. In contrast to pure PANI, the absorption spectrum of
Ag/PANI nanocomposite showed additional strong band assigned to surface plasmon
resonance absorption of the electrons in the conducting silver bands.",
publisher = "Belgrade : Agencija FORMAT",
journal = "The 3rd International Conference on the Physics of Optical Materials and Devices - Book of abstracts, September 3rd - September 6th, 2012, Belgrade, Serbia",
title = "Two-phase boundary synthesis and optical properties of silver/polyaniline nanocomposites",
pages = "125-125",
url = "https://hdl.handle.net/21.15107/rcub_cer_6752"
}

Vukoje, I., Vodnik, V., Bogdanović, U., Džunuzović, J.,& Nedeljković, J.. (2012). Two-phase boundary synthesis and optical properties of silver/polyaniline nanocomposites. in The 3rd International Conference on the Physics of Optical Materials and Devices - Book of abstracts, September 3rd - September 6th, 2012, Belgrade, Serbia
Belgrade : Agencija FORMAT., 125-125.
https://hdl.handle.net/21.15107/rcub_cer_6752

Vukoje I, Vodnik V, Bogdanović U, Džunuzović J, Nedeljković J. Two-phase boundary synthesis and optical properties of silver/polyaniline nanocomposites. in The 3rd International Conference on the Physics of Optical Materials and Devices - Book of abstracts, September 3rd - September 6th, 2012, Belgrade, Serbia. 2012;:125-125.
https://hdl.handle.net/21.15107/rcub_cer_6752 .

Vukoje, Ivana, Vodnik, Vesna, Bogdanović, Una, Džunuzović, Jasna, Nedeljković, Jovan, "Two-phase boundary synthesis and optical properties of silver/polyaniline nanocomposites" in The 3rd International Conference on the Physics of Optical Materials and Devices - Book of abstracts, September 3rd - September 6th, 2012, Belgrade, Serbia (2012):125-125,
https://hdl.handle.net/21.15107/rcub_cer_6752 .

TY  - CONF
AU  - Bogdanović, Una
AU  - Vodnik, Vesna
AU  - Vukoje, Ivana
AU  - Džunuzović, Jasna
AU  - Nedeljković, Jovan
PY  - 2012
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6753
AB  - Nanocomposites based on conducting polymer and metal nanoparticles are very
advantageous nanostructures due to their unique optical and conductive properties,
offering the opportunity for many nanotechnological applications. In the present work,
we report polyaniline – gold nanocomposite (PANI/Au) obtained by “in situ” chemical
synthesis route. The chloroaurate ions (AuCl4
-) are used as an oxidant for the oxidative
polymerization of aniline leading to the formation of gold nanoparticles together with
polyaniline. Furthermore, the gold nanoparticles act as nucleation sites for the oxidative
formation of PANI, encapsulating the metal in the form of a polymer/metal composite.
Characterization of the samples, performed with UV-Vis and FTIR spectroscopy and
XRD technique are used for description of the optical and structural properties of
PANI/Au nanocomposite. Results from the FTIR spectra of the composite material are
consistent with PANI produced using only ammonium persulfate as the oxidant. On the
other hand, UV-Vis results indicate that the optical properties can be tailored from
PANI.
PB  - Belgrade : Agencija FORMAT
C3  - The 3rd International Conference on the Physics of Optical Materials and Devices - Book of abstracts, September 3rd - September 6th, 2012, Belgrade, Serbia
T1  - Optical and structural characterization of polyaniline-gold nanocomposite
SP  - 98
EP  - 98
UR  - https://hdl.handle.net/21.15107/rcub_cer_6753
ER  - 

@conference{
author = "Bogdanović, Una and Vodnik, Vesna and Vukoje, Ivana and Džunuzović, Jasna and Nedeljković, Jovan",
year = "2012",
abstract = "Nanocomposites based on conducting polymer and metal nanoparticles are very
advantageous nanostructures due to their unique optical and conductive properties,
offering the opportunity for many nanotechnological applications. In the present work,
we report polyaniline – gold nanocomposite (PANI/Au) obtained by “in situ” chemical
synthesis route. The chloroaurate ions (AuCl4
-) are used as an oxidant for the oxidative
polymerization of aniline leading to the formation of gold nanoparticles together with
polyaniline. Furthermore, the gold nanoparticles act as nucleation sites for the oxidative
formation of PANI, encapsulating the metal in the form of a polymer/metal composite.
Characterization of the samples, performed with UV-Vis and FTIR spectroscopy and
XRD technique are used for description of the optical and structural properties of
PANI/Au nanocomposite. Results from the FTIR spectra of the composite material are
consistent with PANI produced using only ammonium persulfate as the oxidant. On the
other hand, UV-Vis results indicate that the optical properties can be tailored from
PANI.",
publisher = "Belgrade : Agencija FORMAT",
journal = "The 3rd International Conference on the Physics of Optical Materials and Devices - Book of abstracts, September 3rd - September 6th, 2012, Belgrade, Serbia",
title = "Optical and structural characterization of polyaniline-gold nanocomposite",
pages = "98-98",
url = "https://hdl.handle.net/21.15107/rcub_cer_6753"
}

Bogdanović, U., Vodnik, V., Vukoje, I., Džunuzović, J.,& Nedeljković, J.. (2012). Optical and structural characterization of polyaniline-gold nanocomposite. in The 3rd International Conference on the Physics of Optical Materials and Devices - Book of abstracts, September 3rd - September 6th, 2012, Belgrade, Serbia
Belgrade : Agencija FORMAT., 98-98.
https://hdl.handle.net/21.15107/rcub_cer_6753

Bogdanović U, Vodnik V, Vukoje I, Džunuzović J, Nedeljković J. Optical and structural characterization of polyaniline-gold nanocomposite. in The 3rd International Conference on the Physics of Optical Materials and Devices - Book of abstracts, September 3rd - September 6th, 2012, Belgrade, Serbia. 2012;:98-98.
https://hdl.handle.net/21.15107/rcub_cer_6753 .

Bogdanović, Una, Vodnik, Vesna, Vukoje, Ivana, Džunuzović, Jasna, Nedeljković, Jovan, "Optical and structural characterization of polyaniline-gold nanocomposite" in The 3rd International Conference on the Physics of Optical Materials and Devices - Book of abstracts, September 3rd - September 6th, 2012, Belgrade, Serbia (2012):98-98,
https://hdl.handle.net/21.15107/rcub_cer_6753 .

TY  - CONF
AU  - Bogdanović, Una
AU  - Vodnik, Vesna
AU  - Vukoje, Ivana
AU  - Džunuzović, Jasna
AU  - Nedeljković, Jovan
PY  - 2012
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6754
AB  - In this report, we describe a simple and rapid chemical reduction method with inert gas
protection, for preparing stable copper nanoparticle with average particle size of 9.4 nm.
In our synthesis route, ascorbic acid is used as antioxidant to effectively prevent the
general oxidation process during copper nuclei formation. As-prepared copper
nanoparticles were transferred from water phase to different organic solvents (hexane,
octane, cyclohexane, and toluene) using oleylamine as a phase transfer agent. This
should allow dispersion of the particles in both polar and nonpolar solvents and avoid
particle aggregation during the solvent exchange process. Transmission electron
microscopy and UV–Vis spectroscopy contributed to the analysis of size and optical
properties of the copper nanoparticles in different media, respectively. The advantages
of such solvent exchange process can be found in the applications of metal particles as
catalysts for organic reactions in nonpolar solvents and in the study of the changes in
surface chemistry depending on the surrounding medium and on the adsorption of
different moieties.
PB  - Belgrade : Agencija FORMAT
C3  - The 3rd International Conference on the Physics of Optical Materials and Devices - Book of abstracts, September 3rd - September 6th, 2012, Belgrade, Serbia
T1  - Synthesis and optical behavior of copper nanoparticles in different media
SP  - 97
EP  - 97
UR  - https://hdl.handle.net/21.15107/rcub_cer_6754
ER  - 

@conference{
author = "Bogdanović, Una and Vodnik, Vesna and Vukoje, Ivana and Džunuzović, Jasna and Nedeljković, Jovan",
year = "2012",
abstract = "In this report, we describe a simple and rapid chemical reduction method with inert gas
protection, for preparing stable copper nanoparticle with average particle size of 9.4 nm.
In our synthesis route, ascorbic acid is used as antioxidant to effectively prevent the
general oxidation process during copper nuclei formation. As-prepared copper
nanoparticles were transferred from water phase to different organic solvents (hexane,
octane, cyclohexane, and toluene) using oleylamine as a phase transfer agent. This
should allow dispersion of the particles in both polar and nonpolar solvents and avoid
particle aggregation during the solvent exchange process. Transmission electron
microscopy and UV–Vis spectroscopy contributed to the analysis of size and optical
properties of the copper nanoparticles in different media, respectively. The advantages
of such solvent exchange process can be found in the applications of metal particles as
catalysts for organic reactions in nonpolar solvents and in the study of the changes in
surface chemistry depending on the surrounding medium and on the adsorption of
different moieties.",
publisher = "Belgrade : Agencija FORMAT",
journal = "The 3rd International Conference on the Physics of Optical Materials and Devices - Book of abstracts, September 3rd - September 6th, 2012, Belgrade, Serbia",
title = "Synthesis and optical behavior of copper nanoparticles in different media",
pages = "97-97",
url = "https://hdl.handle.net/21.15107/rcub_cer_6754"
}

Bogdanović, U., Vodnik, V., Vukoje, I., Džunuzović, J.,& Nedeljković, J.. (2012). Synthesis and optical behavior of copper nanoparticles in different media. in The 3rd International Conference on the Physics of Optical Materials and Devices - Book of abstracts, September 3rd - September 6th, 2012, Belgrade, Serbia
Belgrade : Agencija FORMAT., 97-97.
https://hdl.handle.net/21.15107/rcub_cer_6754

Bogdanović U, Vodnik V, Vukoje I, Džunuzović J, Nedeljković J. Synthesis and optical behavior of copper nanoparticles in different media. in The 3rd International Conference on the Physics of Optical Materials and Devices - Book of abstracts, September 3rd - September 6th, 2012, Belgrade, Serbia. 2012;:97-97.
https://hdl.handle.net/21.15107/rcub_cer_6754 .

Bogdanović, Una, Vodnik, Vesna, Vukoje, Ivana, Džunuzović, Jasna, Nedeljković, Jovan, "Synthesis and optical behavior of copper nanoparticles in different media" in The 3rd International Conference on the Physics of Optical Materials and Devices - Book of abstracts, September 3rd - September 6th, 2012, Belgrade, Serbia (2012):97-97,
https://hdl.handle.net/21.15107/rcub_cer_6754 .

TY  - JOUR
AU  - Vukoje, Ivana
AU  - Božanić, Dušan
AU  - Džunuzović, Jasna
AU  - Bogdanović, Una
AU  - Vodnik, Vesna
PY  - 2012
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1045
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-di- chlorobenzene) 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.
AB  - Cilj ovog rada je eksperimentalno i teorijsko ispitivanje i upoređivanje pro- mena površinskih plazmona nanočestica srebra u vodi i organskim rastvaračima. Nanočestice srebra prečnika 5±1,5 nm sintetisane su u vodi redukcijom srebro nitrata pomoću natrijum borhidrida. Nakon toga, nanočestice su prebačene u različite organske rastvarače (hloroform, heksan, toluen i 1,2-dihlorbenzen) pomoću oleilamina. Upotrebljeni rastvarači izabrani su na osnovu razlike u indeksima pre- lamanja. Na osnovu UV-Vis apsorpcione spektrofotometrije i transmisione elektronske mikroskopije (TEM) potvrđeno je da nema promena u obliku i veličini čes- tica nakon transfera u organske rastvarače. Apsorpcioni spektri nanočestica srebra u različitim rastvaračima pokazuju promene u položaju površinskih plazmona na osnovu razlike u dielektričnim karakteristikama upotrebljenih rastvarača. Za analizu ovih promena eksperimentalni apsorpcioni spektri su modelovani pomoću Mie teorije za male sferne čestice. Eksperimentalne i teorijske vrednosti položaja površinskih plazmona nanočestica srebra upoređivane su sa Drude teorijom i diskutovana su ograničenja primene same teorije na ponašanja nanočestica srebra u organskim rastvaračima.
PB  - Association of Chemical Engineers of Serbia
T2  - Hemijska industrija
T1  - Surface plasmon resonance of Ag organosols: Experimental and theoretical investigations
T1  - Rezonance površinskih plazmona organosola srebra - eksperimentalna i teorijska ispitivanja
VL  - 66
IS  - 6
SP  - 805
EP  - 812
DO  - 10.2298/HEMIND120112028V
ER  - 

@article{
author = "Vukoje, Ivana and Božanić, Dušan and Džunuzović, Jasna 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-di- chlorobenzene) 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., Cilj ovog rada je eksperimentalno i teorijsko ispitivanje i upoređivanje pro- mena površinskih plazmona nanočestica srebra u vodi i organskim rastvaračima. Nanočestice srebra prečnika 5±1,5 nm sintetisane su u vodi redukcijom srebro nitrata pomoću natrijum borhidrida. Nakon toga, nanočestice su prebačene u različite organske rastvarače (hloroform, heksan, toluen i 1,2-dihlorbenzen) pomoću oleilamina. Upotrebljeni rastvarači izabrani su na osnovu razlike u indeksima pre- lamanja. Na osnovu UV-Vis apsorpcione spektrofotometrije i transmisione elektronske mikroskopije (TEM) potvrđeno je da nema promena u obliku i veličini čes- tica nakon transfera u organske rastvarače. Apsorpcioni spektri nanočestica srebra u različitim rastvaračima pokazuju promene u položaju površinskih plazmona na osnovu razlike u dielektričnim karakteristikama upotrebljenih rastvarača. Za analizu ovih promena eksperimentalni apsorpcioni spektri su modelovani pomoću Mie teorije za male sferne čestice. Eksperimentalne i teorijske vrednosti položaja površinskih plazmona nanočestica srebra upoređivane su sa Drude teorijom i diskutovana su ograničenja primene same teorije na ponašanja nanočestica srebra u organskim rastvaračima.",
publisher = "Association of Chemical Engineers of Serbia",
journal = "Hemijska industrija",
title = "Surface plasmon resonance of Ag organosols: Experimental and theoretical investigations, Rezonance površinskih plazmona organosola srebra - eksperimentalna i teorijska ispitivanja",
volume = "66",
number = "6",
pages = "805-812",
doi = "10.2298/HEMIND120112028V"
}

Vukoje, I., Božanić, D., Džunuzović, J., Bogdanović, U.,& Vodnik, V.. (2012). Surface plasmon resonance of Ag organosols: Experimental and theoretical investigations. in Hemijska industrija
Association of Chemical Engineers of Serbia., 66(6), 805-812.
https://doi.org/10.2298/HEMIND120112028V

Vukoje I, Božanić D, Džunuzović J, 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, Božanić, Dušan, Džunuzović, Jasna, 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 . .

TY  - CONF
AU  - Vukoje, Ivana
AU  - Vodnik, Vesna
AU  - Džunuzović, Enis
AU  - Džunuzović, Jasna
AU  - Bogdanović, Una
AU  - Nedeljković, Jovan
PY  - 2011
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6714
AB  - As continue of our previous studies, three silver organosols with different nanoparticles
sizes were used to obtain nanocomposite films based on Ag/PMMA system. Among polymeric
materials, PMMA is well known as a polymeric glass and engineering plastic with a wide range
of applications. One of the objectives of this work is to gain better insight into the properties of
this material upon incorporation of small amount of silver nanoparticles. Silver nanoparticles
were synthesized in various organic solvents (toluene, 1.2- dichlorobenzene ) in order to obtain
different sizes of nanoparticles: 7.2 ±2.8 nm, 13.7±2.7 nm and 22.7±3.5 nm. By varying the
heating temperature, solvent and reaction time, we could control the size of nanoparticles. In the
second step, nanocomposites Ag/PMMA were prepared by in-situ bulk polymerization of
methyl methacrylate in the presence of appropriate amount of silver nanoparticles. The size
distribution and morphology of the silver nanopaticles in the nanocomposite films were
determined using TEM measurements. The influence of size and dielectric property of
surrounding media on surface plasmon absorption band of silver nanoparticles are discussed.
UV-vis and FTIR spectroscopy have been applied to support the change in the optical and
chemical properties of the silver organosols, as well as transparent and coloured Ag/PMMA
nanocomposite films.
PB  - Belgrade: Materials Research Society of Serbia
C3  - Programme and the Book of Abstracts - Thirteenth Annual Conference YUCOMAT 2011, 5-9 September 2011, Herceg Novi, Montenegro
T1  - Optical properties of nanocomposite films based on Ag/PMMA system
SP  - 147
EP  - 147
UR  - https://hdl.handle.net/21.15107/rcub_cer_6714
ER  - 

@conference{
author = "Vukoje, Ivana and Vodnik, Vesna and Džunuzović, Enis and Džunuzović, Jasna and Bogdanović, Una and Nedeljković, Jovan",
year = "2011",
abstract = "As continue of our previous studies, three silver organosols with different nanoparticles
sizes were used to obtain nanocomposite films based on Ag/PMMA system. Among polymeric
materials, PMMA is well known as a polymeric glass and engineering plastic with a wide range
of applications. One of the objectives of this work is to gain better insight into the properties of
this material upon incorporation of small amount of silver nanoparticles. Silver nanoparticles
were synthesized in various organic solvents (toluene, 1.2- dichlorobenzene ) in order to obtain
different sizes of nanoparticles: 7.2 ±2.8 nm, 13.7±2.7 nm and 22.7±3.5 nm. By varying the
heating temperature, solvent and reaction time, we could control the size of nanoparticles. In the
second step, nanocomposites Ag/PMMA were prepared by in-situ bulk polymerization of
methyl methacrylate in the presence of appropriate amount of silver nanoparticles. The size
distribution and morphology of the silver nanopaticles in the nanocomposite films were
determined using TEM measurements. The influence of size and dielectric property of
surrounding media on surface plasmon absorption band of silver nanoparticles are discussed.
UV-vis and FTIR spectroscopy have been applied to support the change in the optical and
chemical properties of the silver organosols, as well as transparent and coloured Ag/PMMA
nanocomposite films.",
publisher = "Belgrade: Materials Research Society of Serbia",
journal = "Programme and the Book of Abstracts - Thirteenth Annual Conference YUCOMAT 2011, 5-9 September 2011, Herceg Novi, Montenegro",
title = "Optical properties of nanocomposite films based on Ag/PMMA system",
pages = "147-147",
url = "https://hdl.handle.net/21.15107/rcub_cer_6714"
}

Vukoje, I., Vodnik, V., Džunuzović, E., Džunuzović, J., Bogdanović, U.,& Nedeljković, J.. (2011). Optical properties of nanocomposite films based on Ag/PMMA system. in Programme and the Book of Abstracts - Thirteenth Annual Conference YUCOMAT 2011, 5-9 September 2011, Herceg Novi, Montenegro
Belgrade: Materials Research Society of Serbia., 147-147.
https://hdl.handle.net/21.15107/rcub_cer_6714

Vukoje I, Vodnik V, Džunuzović E, Džunuzović J, Bogdanović U, Nedeljković J. Optical properties of nanocomposite films based on Ag/PMMA system. in Programme and the Book of Abstracts - Thirteenth Annual Conference YUCOMAT 2011, 5-9 September 2011, Herceg Novi, Montenegro. 2011;:147-147.
https://hdl.handle.net/21.15107/rcub_cer_6714 .

Vukoje, Ivana, Vodnik, Vesna, Džunuzović, Enis, Džunuzović, Jasna, Bogdanović, Una, Nedeljković, Jovan, "Optical properties of nanocomposite films based on Ag/PMMA system" in Programme and the Book of Abstracts - Thirteenth Annual Conference YUCOMAT 2011, 5-9 September 2011, Herceg Novi, Montenegro (2011):147-147,
https://hdl.handle.net/21.15107/rcub_cer_6714 .