TY  - CONF
AU  - Savić, Tatjana D.
AU  - Čomor, Mirjana
AU  - Janković, Ivana A.
AU  - Rakić, Vesna M.
AU  - Abazović, Nadica
AU  - Carević, Milica
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9216
AB  - The  surface  modification  of  nanocrystalline  TiO2particles  (45  Å)  with salicylate-type  ligands  consisting  of  anextended  aromatic  ring  system, specifically   1-hydroxy-2-naphthoicacid(1H2NA)and   1,4-dihydroxy-2-naphthoicacid(1,4DH2NA),  was  found  to  alter  the  optical  properties  of nanoparticles  in  a  similar  way  to  salicylic  acid(2HBA).The  formation  of the inner-sphere charge-transfer(CT) complexes results in a red shift of the semiconductor  absorptiononsetcompared  to  unmodified nanocrystallitesand   a   reduction   in   the   band   gap   upon   the   increase   in   the   electron delocalization   when   including   an   additional   ring.From absorption measurements of   CT   complexes   in   methanol/water=90/10   solutions, stability  constants  in  the  order  of  103M-1havebeen  determined  at  pH  2.Thermal stability of CT-complexes was investigated by using TPD analysis (TG/DTA/MS).
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2016 : 13th international conference on fundamental and applied aspects of physical chemistry
T1  - Thermal stability of CT-complexes formed at the surface of anatase nanoparticles
SP  - 549
EP  - 552
UR  - https://hdl.handle.net/21.15107/rcub_vinar_9216
ER  - 

@conference{
author = "Savić, Tatjana D. and Čomor, Mirjana and Janković, Ivana A. and Rakić, Vesna M. and Abazović, Nadica and Carević, Milica",
year = "2016",
abstract = "The  surface  modification  of  nanocrystalline  TiO2particles  (45  Å)  with salicylate-type  ligands  consisting  of  anextended  aromatic  ring  system, specifically   1-hydroxy-2-naphthoicacid(1H2NA)and   1,4-dihydroxy-2-naphthoicacid(1,4DH2NA),  was  found  to  alter  the  optical  properties  of nanoparticles  in  a  similar  way  to  salicylic  acid(2HBA).The  formation  of the inner-sphere charge-transfer(CT) complexes results in a red shift of the semiconductor  absorptiononsetcompared  to  unmodified nanocrystallitesand   a   reduction   in   the   band   gap   upon   the   increase   in   the   electron delocalization   when   including   an   additional   ring.From absorption measurements of   CT   complexes   in   methanol/water=90/10   solutions, stability  constants  in  the  order  of  103M-1havebeen  determined  at  pH  2.Thermal stability of CT-complexes was investigated by using TPD analysis (TG/DTA/MS).",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2016 : 13th international conference on fundamental and applied aspects of physical chemistry",
title = "Thermal stability of CT-complexes formed at the surface of anatase nanoparticles",
pages = "549-552",
url = "https://hdl.handle.net/21.15107/rcub_vinar_9216"
}

Savić, T. D., Čomor, M., Janković, I. A., Rakić, V. M., Abazović, N.,& Carević, M.. (2016). Thermal stability of CT-complexes formed at the surface of anatase nanoparticles. in Physical chemistry 2016 : 13th international conference on fundamental and applied aspects of physical chemistry
Society of Physical Chemists of Serbia., 549-552.
https://hdl.handle.net/21.15107/rcub_vinar_9216

Savić TD, Čomor M, Janković IA, Rakić VM, Abazović N, Carević M. Thermal stability of CT-complexes formed at the surface of anatase nanoparticles. in Physical chemistry 2016 : 13th international conference on fundamental and applied aspects of physical chemistry. 2016;:549-552.
https://hdl.handle.net/21.15107/rcub_vinar_9216 .

Savić, Tatjana D., Čomor, Mirjana, Janković, Ivana A., Rakić, Vesna M., Abazović, Nadica, Carević, Milica, "Thermal stability of CT-complexes formed at the surface of anatase nanoparticles" in Physical chemistry 2016 : 13th international conference on fundamental and applied aspects of physical chemistry (2016):549-552,
https://hdl.handle.net/21.15107/rcub_vinar_9216 .

TY  - JOUR
AU  - Savić, Tatjana D.
AU  - Čomor, Mirjana
AU  - Abazović, Nadica
AU  - Šaponjić, Zoran
AU  - Marinović-Cincović, Milena
AU  - Veljkovic, Dusan Z.
AU  - Zarić, Snežana D.
AU  - Janković, Ivana A.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/410
AB  - Sensitization of TiO2 crystals and nanoparticles with appropriately chosen organic molecules can lead to a significant shift of their absorption threshold from the UV to the visible, thus improving the absorption of the solar spectrum as well as the efficiency of photocatalytic and photovoltaic devices. Herein, the surface modification of nanocrystalline TiO2 particles (45 angstrom) with salicylate-type ligands consisting of an extended aromatic ring system, specifically 1-hydroxy-2-naphthoic acid and 1,4-dihydroxy-2-naphthoic acid, was found to alter the optical properties of nanoparticles in a similar way to salicylic acid. From both absorption measurements and steady-state quenching measurements of modifier fluorescence upon binding to TiO2 in methanol/ water = 90/10 solutions, stability constants in the order of 10(3) M-1 have been determined at pH 2. Fluorescence lifetime measurements, in the presence and absence of colloidal TiO2 nanoparticles, indicated that the fluorescence quenching process is primarily static quenching, thus proving the formation of a nonfluorescent charge-transfer (CT) complex. The binding structures were investigated by using FTIR spectroscopy. Thermal stability of CT-complexes was investigated by using TPD analysis (TG/DTA/MS). Quantum chemical calculations on model systems using density functional theory (DFT) were performed to obtain the vibrational frequencies of charge transfer complexes, and the calculated values were compared with the experimental data. The investigated ligands have the optimal geometry for binding to surface Ti atoms, resulting in ring coordination complexes of a salicylate type (binuclear bidentate binding-bridging) thus restoring the six-coordinated octahedral geometry of surface Ti atoms. The formation of the inner-sphere CT-complexes results in a red shift of the semiconductor absorption compared to unmodified nanocrystallites and a reduction in the band gap upon the increase in the electron delocalization when including an additional ring. (C) 2015 Elsevier B.V. All rights reserved.
T2  - Journal of Alloys and Compounds
T1  - Anatase nanoparticles surface modified with fused ring salicylate-type ligands (1-hydroxy-2-naphthoic acids): A combined DFT and experimental study
VL  - 630
SP  - 226
EP  - 235
DO  - 10.1016/j.jallcom.2015.01.041
ER  - 

@article{
author = "Savić, Tatjana D. and Čomor, Mirjana and Abazović, Nadica and Šaponjić, Zoran and Marinović-Cincović, Milena and Veljkovic, Dusan Z. and Zarić, Snežana D. and Janković, Ivana A.",
year = "2015",
abstract = "Sensitization of TiO2 crystals and nanoparticles with appropriately chosen organic molecules can lead to a significant shift of their absorption threshold from the UV to the visible, thus improving the absorption of the solar spectrum as well as the efficiency of photocatalytic and photovoltaic devices. Herein, the surface modification of nanocrystalline TiO2 particles (45 angstrom) with salicylate-type ligands consisting of an extended aromatic ring system, specifically 1-hydroxy-2-naphthoic acid and 1,4-dihydroxy-2-naphthoic acid, was found to alter the optical properties of nanoparticles in a similar way to salicylic acid. From both absorption measurements and steady-state quenching measurements of modifier fluorescence upon binding to TiO2 in methanol/ water = 90/10 solutions, stability constants in the order of 10(3) M-1 have been determined at pH 2. Fluorescence lifetime measurements, in the presence and absence of colloidal TiO2 nanoparticles, indicated that the fluorescence quenching process is primarily static quenching, thus proving the formation of a nonfluorescent charge-transfer (CT) complex. The binding structures were investigated by using FTIR spectroscopy. Thermal stability of CT-complexes was investigated by using TPD analysis (TG/DTA/MS). Quantum chemical calculations on model systems using density functional theory (DFT) were performed to obtain the vibrational frequencies of charge transfer complexes, and the calculated values were compared with the experimental data. The investigated ligands have the optimal geometry for binding to surface Ti atoms, resulting in ring coordination complexes of a salicylate type (binuclear bidentate binding-bridging) thus restoring the six-coordinated octahedral geometry of surface Ti atoms. The formation of the inner-sphere CT-complexes results in a red shift of the semiconductor absorption compared to unmodified nanocrystallites and a reduction in the band gap upon the increase in the electron delocalization when including an additional ring. (C) 2015 Elsevier B.V. All rights reserved.",
journal = "Journal of Alloys and Compounds",
title = "Anatase nanoparticles surface modified with fused ring salicylate-type ligands (1-hydroxy-2-naphthoic acids): A combined DFT and experimental study",
volume = "630",
pages = "226-235",
doi = "10.1016/j.jallcom.2015.01.041"
}

Savić, T. D., Čomor, M., Abazović, N., Šaponjić, Z., Marinović-Cincović, M., Veljkovic, D. Z., Zarić, S. D.,& Janković, I. A.. (2015). Anatase nanoparticles surface modified with fused ring salicylate-type ligands (1-hydroxy-2-naphthoic acids): A combined DFT and experimental study. in Journal of Alloys and Compounds, 630, 226-235.
https://doi.org/10.1016/j.jallcom.2015.01.041

Savić TD, Čomor M, Abazović N, Šaponjić Z, Marinović-Cincović M, Veljkovic DZ, Zarić SD, Janković IA. Anatase nanoparticles surface modified with fused ring salicylate-type ligands (1-hydroxy-2-naphthoic acids): A combined DFT and experimental study. in Journal of Alloys and Compounds. 2015;630:226-235.
doi:10.1016/j.jallcom.2015.01.041 .

Savić, Tatjana D., Čomor, Mirjana, Abazović, Nadica, Šaponjić, Zoran, Marinović-Cincović, Milena, Veljkovic, Dusan Z., Zarić, Snežana D., Janković, Ivana A., "Anatase nanoparticles surface modified with fused ring salicylate-type ligands (1-hydroxy-2-naphthoic acids): A combined DFT and experimental study" in Journal of Alloys and Compounds, 630 (2015):226-235,
https://doi.org/10.1016/j.jallcom.2015.01.041 . .

TY  - CONF
AU  - Carević, Milica
AU  - Savić, Tatjana D.
AU  - Abazović, Nadica
AU  - Janković, Ivana A.
AU  - Čomor, Mirjana
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9236
AB  - The colloidal ZrO2 nanoparticles were hydrolytically synthesized and
characterized using x-ray diffraction and UV/Vis spectroscopy. The surface
modification of nanocrystalline particles with selected enediol ligands:
catechol (CAT), 2,3-dihydroxynaphthalene (2,3-DHN), anthrarobin (ANT)
and quercetin, was found to alter the optical properties of nanoparticles. The
formation of the inner-sphere charge-transfer (CT) complexes results in a
red shift of the semiconductor absorption onset compared to unmodified
nanocrystallites, and a decrease of effective band gap upon increase of the
electron delocalization after the inclusion of additional rings
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
T1  - Surface modification of zirconia nanoparticles with selected enediol ligands
VL  - H-23-P
UR  - https://hdl.handle.net/21.15107/rcub_vinar_9236
ER  - 

@conference{
author = "Carević, Milica and Savić, Tatjana D. and Abazović, Nadica and Janković, Ivana A. and Čomor, Mirjana",
year = "2014",
abstract = "The colloidal ZrO2 nanoparticles were hydrolytically synthesized and
characterized using x-ray diffraction and UV/Vis spectroscopy. The surface
modification of nanocrystalline particles with selected enediol ligands:
catechol (CAT), 2,3-dihydroxynaphthalene (2,3-DHN), anthrarobin (ANT)
and quercetin, was found to alter the optical properties of nanoparticles. The
formation of the inner-sphere charge-transfer (CT) complexes results in a
red shift of the semiconductor absorption onset compared to unmodified
nanocrystallites, and a decrease of effective band gap upon increase of the
electron delocalization after the inclusion of additional rings",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry",
title = "Surface modification of zirconia nanoparticles with selected enediol ligands",
volume = "H-23-P",
url = "https://hdl.handle.net/21.15107/rcub_vinar_9236"
}

Carević, M., Savić, T. D., Abazović, N., Janković, I. A.,& Čomor, M.. (2014). Surface modification of zirconia nanoparticles with selected enediol ligands. in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
Society of Physical Chemists of Serbia., H-23-P.
https://hdl.handle.net/21.15107/rcub_vinar_9236

Carević M, Savić TD, Abazović N, Janković IA, Čomor M. Surface modification of zirconia nanoparticles with selected enediol ligands. in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry. 2014;H-23-P.
https://hdl.handle.net/21.15107/rcub_vinar_9236 .

Carević, Milica, Savić, Tatjana D., Abazović, Nadica, Janković, Ivana A., Čomor, Mirjana, "Surface modification of zirconia nanoparticles with selected enediol ligands" in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry, H-23-P (2014),
https://hdl.handle.net/21.15107/rcub_vinar_9236 .

TY  - CONF
AU  - Savić, Tatjana D.
AU  - Čomor, Mirjana
AU  - Tešević, Vele V.
AU  - Janković, Ivana A.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9230
AB  - The surface modification of nanocrystalline TiO2 particles (45 Å) with
catecholate-type ligands having electron donating (4-methylcatechol,
4MetCat) and electron withdrawing (4-nitrocatechol, 4NitCat) substituent
groups, was found to alter the optical properties of nanoparticles in a similar
way to catechol (Cat). The formation of the inner-sphere charge-transfer
(CT) complexes results in a red shift of the semiconductor absorption onset
compared to unmodified nanocrystallites, being slightly less pronounced in
the case of electron withdrawing substituent. The investigated ligands have
the optimal geometry for binding to surface Ti atoms, resulting in ring
coordination complexes of catecholate type (binuclear bidentate binding -
bridging) thus restoring six-coordinated octahedral geometry of surface Ti
atoms. The binding structures were investigated by using FTIR
spectroscopy.
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
T1  - Surface modification of anatase nanoparticles with substituted catecholate type ligands
VL  - H-08-P
UR  - https://hdl.handle.net/21.15107/rcub_vinar_9230
ER  - 

@conference{
author = "Savić, Tatjana D. and Čomor, Mirjana and Tešević, Vele V. and Janković, Ivana A.",
year = "2014",
abstract = "The surface modification of nanocrystalline TiO2 particles (45 Å) with
catecholate-type ligands having electron donating (4-methylcatechol,
4MetCat) and electron withdrawing (4-nitrocatechol, 4NitCat) substituent
groups, was found to alter the optical properties of nanoparticles in a similar
way to catechol (Cat). The formation of the inner-sphere charge-transfer
(CT) complexes results in a red shift of the semiconductor absorption onset
compared to unmodified nanocrystallites, being slightly less pronounced in
the case of electron withdrawing substituent. The investigated ligands have
the optimal geometry for binding to surface Ti atoms, resulting in ring
coordination complexes of catecholate type (binuclear bidentate binding -
bridging) thus restoring six-coordinated octahedral geometry of surface Ti
atoms. The binding structures were investigated by using FTIR
spectroscopy.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry",
title = "Surface modification of anatase nanoparticles with substituted catecholate type ligands",
volume = "H-08-P",
url = "https://hdl.handle.net/21.15107/rcub_vinar_9230"
}

Savić, T. D., Čomor, M., Tešević, V. V.,& Janković, I. A.. (2014). Surface modification of anatase nanoparticles with substituted catecholate type ligands. in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
Society of Physical Chemists of Serbia., H-08-P.
https://hdl.handle.net/21.15107/rcub_vinar_9230

Savić TD, Čomor M, Tešević VV, Janković IA. Surface modification of anatase nanoparticles with substituted catecholate type ligands. in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry. 2014;H-08-P.
https://hdl.handle.net/21.15107/rcub_vinar_9230 .

Savić, Tatjana D., Čomor, Mirjana, Tešević, Vele V., Janković, Ivana A., "Surface modification of anatase nanoparticles with substituted catecholate type ligands" in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry, H-08-P (2014),
https://hdl.handle.net/21.15107/rcub_vinar_9230 .

TY  - JOUR
AU  - Savić, Tatjana D.
AU  - Čomor, Mirjana
AU  - Nedeljković, Jovan
AU  - Veljkovic, Dusan Z.
AU  - Zarić, Snežana D.
AU  - Rakić, Vesna M.
AU  - Janković, Ivana A.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/125
AB  - The surface modification of nanocrystalline TiO2 particles (45 angstrom) with catecholate-type ligands having different electron donating/electron withdrawing substituent groups, specifically 3-methylcatechol, 4-methylcatechol, 3-methoxycatechol, 3,4-dihydroxybenzaldehyde and 4-nitrocatechol, was found to alter the optical properties of nanoparticles in a similar way to catechol. The formation of the inner-sphere charge-transfer (CT) complexes results in a red shift of the semiconductor absorption compared to unmodified nanocrystallites and a reduction of the effective band gap, being slightly less pronounced in the case of electron withdrawing substituents. The investigated ligands have the optimal geometry for binding to surface Ti atoms, resulting in ring coordination complexes of the catecholate type (binuclear bidentate binding-bridging) thus restoring six-coordinated octahedral geometry of surface Ti atoms. From the absorption measurements (Benesi-Hildebrand plot), the stability constants in methanol/water = 90/10 solutions at pH 2 in the order of 10(3) M-1 have been determined. The binding structures were investigated by using FTIR spectroscopy. Thermal stability of CT-complexes was investigated by using TG/DSC/MS analysis. Quantum chemical calculations on model systems using density functional theory (DFT) were performed to obtain the vibrational frequencies of charge transfer complexes, and the calculated values were compared with the experimental data.
T2  - Physical Chemistry Chemical Physics
T1  - The effect of substituents on the surface modification of anatase nanoparticles with catecholate-type ligands: a combined DFT and experimental study
VL  - 16
IS  - 38
SP  - 20796
EP  - 20805
DO  - 10.1039/c4cp02197e
ER  - 

@article{
author = "Savić, Tatjana D. and Čomor, Mirjana and Nedeljković, Jovan and Veljkovic, Dusan Z. and Zarić, Snežana D. and Rakić, Vesna M. and Janković, Ivana A.",
year = "2014",
abstract = "The surface modification of nanocrystalline TiO2 particles (45 angstrom) with catecholate-type ligands having different electron donating/electron withdrawing substituent groups, specifically 3-methylcatechol, 4-methylcatechol, 3-methoxycatechol, 3,4-dihydroxybenzaldehyde and 4-nitrocatechol, was found to alter the optical properties of nanoparticles in a similar way to catechol. The formation of the inner-sphere charge-transfer (CT) complexes results in a red shift of the semiconductor absorption compared to unmodified nanocrystallites and a reduction of the effective band gap, being slightly less pronounced in the case of electron withdrawing substituents. The investigated ligands have the optimal geometry for binding to surface Ti atoms, resulting in ring coordination complexes of the catecholate type (binuclear bidentate binding-bridging) thus restoring six-coordinated octahedral geometry of surface Ti atoms. From the absorption measurements (Benesi-Hildebrand plot), the stability constants in methanol/water = 90/10 solutions at pH 2 in the order of 10(3) M-1 have been determined. The binding structures were investigated by using FTIR spectroscopy. Thermal stability of CT-complexes was investigated by using TG/DSC/MS analysis. Quantum chemical calculations on model systems using density functional theory (DFT) were performed to obtain the vibrational frequencies of charge transfer complexes, and the calculated values were compared with the experimental data.",
journal = "Physical Chemistry Chemical Physics",
title = "The effect of substituents on the surface modification of anatase nanoparticles with catecholate-type ligands: a combined DFT and experimental study",
volume = "16",
number = "38",
pages = "20796-20805",
doi = "10.1039/c4cp02197e"
}

Savić, T. D., Čomor, M., Nedeljković, J., Veljkovic, D. Z., Zarić, S. D., Rakić, V. M.,& Janković, I. A.. (2014). The effect of substituents on the surface modification of anatase nanoparticles with catecholate-type ligands: a combined DFT and experimental study. in Physical Chemistry Chemical Physics, 16(38), 20796-20805.
https://doi.org/10.1039/c4cp02197e

Savić TD, Čomor M, Nedeljković J, Veljkovic DZ, Zarić SD, Rakić VM, Janković IA. The effect of substituents on the surface modification of anatase nanoparticles with catecholate-type ligands: a combined DFT and experimental study. in Physical Chemistry Chemical Physics. 2014;16(38):20796-20805.
doi:10.1039/c4cp02197e .

Savić, Tatjana D., Čomor, Mirjana, Nedeljković, Jovan, Veljkovic, Dusan Z., Zarić, Snežana D., Rakić, Vesna M., Janković, Ivana A., "The effect of substituents on the surface modification of anatase nanoparticles with catecholate-type ligands: a combined DFT and experimental study" in Physical Chemistry Chemical Physics, 16, no. 38 (2014):20796-20805,
https://doi.org/10.1039/c4cp02197e . .

TY  - JOUR
AU  - Abazović, Nadica
AU  - Čomor, Mirjana
AU  - Mitrić, Miodrag
AU  - Piscopiello, Emanuela
AU  - Radetić, Tamara
AU  - Janković, Ivana A.
AU  - Nedeljković, Jovan
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5493
T2  - Journal of Nanoparticle Research
T1  - Erratum to: Ligand mediated synthesis of AgInSe2 nanoparticles with tetragonal/orthorhombic crystal phases
VL  - 15
IS  - 1
DO  - 10.1007/s11051-012-1292-8
ER  - 

@article{
author = "Abazović, Nadica and Čomor, Mirjana and Mitrić, Miodrag and Piscopiello, Emanuela and Radetić, Tamara and Janković, Ivana A. and Nedeljković, Jovan",
year = "2013",
journal = "Journal of Nanoparticle Research",
title = "Erratum to: Ligand mediated synthesis of AgInSe2 nanoparticles with tetragonal/orthorhombic crystal phases",
volume = "15",
number = "1",
doi = "10.1007/s11051-012-1292-8"
}

Abazović, N., Čomor, M., Mitrić, M., Piscopiello, E., Radetić, T., Janković, I. A.,& Nedeljković, J.. (2013). Erratum to: Ligand mediated synthesis of AgInSe2 nanoparticles with tetragonal/orthorhombic crystal phases. in Journal of Nanoparticle Research, 15(1).
https://doi.org/10.1007/s11051-012-1292-8

Abazović N, Čomor M, Mitrić M, Piscopiello E, Radetić T, Janković IA, Nedeljković J. Erratum to: Ligand mediated synthesis of AgInSe2 nanoparticles with tetragonal/orthorhombic crystal phases. in Journal of Nanoparticle Research. 2013;15(1).
doi:10.1007/s11051-012-1292-8 .

Abazović, Nadica, Čomor, Mirjana, Mitrić, Miodrag, Piscopiello, Emanuela, Radetić, Tamara, Janković, Ivana A., Nedeljković, Jovan, "Erratum to: Ligand mediated synthesis of AgInSe2 nanoparticles with tetragonal/orthorhombic crystal phases" in Journal of Nanoparticle Research, 15, no. 1 (2013),
https://doi.org/10.1007/s11051-012-1292-8 . .

TY  - JOUR
AU  - Abazović, Nadica
AU  - Radoičić, Marija B.
AU  - Savić, Tatjana D.
AU  - Janković, Ivana A.
AU  - Čomor, Mirjana
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5619
AB  - Gd3+-doped titania nanoparticles have been synthesized via acidic hydrolysis of Gd3+ and Ti4+ organic precursors. The resulting products were characterized by X-ray diffraction, transmition electron microscopy and diffuse reflection spectra. Experimental results indicated that Gd3+-doping makes great impact on the optical properties and photocatalytic activity of the obtained TiO2 nanoparticles. All applied doping concentrations induced enhancement of photoactivity regarding degradation of Rhodamine B, compared to pure TiO2. The inter-band defect states formed as a result of incorporation of Gd3+ ions in the TiO2 matrix are most probably the cause of observed improved photoacatalytic activity and optical properties of the doped TiO2 nanoparticles.
T2  - Digest Journal of Nanomaterials and Biostructures
T1  - Room-Temperature Synthesis and Photocatalytic Activity of Titania Nanoparticles Doped with Gadolinium Ions
VL  - 8
IS  - 2
SP  - 871
EP  - U400
UR  - https://hdl.handle.net/21.15107/rcub_vinar_5619
ER  - 

@article{
author = "Abazović, Nadica and Radoičić, Marija B. and Savić, Tatjana D. and Janković, Ivana A. and Čomor, Mirjana",
year = "2013",
abstract = "Gd3+-doped titania nanoparticles have been synthesized via acidic hydrolysis of Gd3+ and Ti4+ organic precursors. The resulting products were characterized by X-ray diffraction, transmition electron microscopy and diffuse reflection spectra. Experimental results indicated that Gd3+-doping makes great impact on the optical properties and photocatalytic activity of the obtained TiO2 nanoparticles. All applied doping concentrations induced enhancement of photoactivity regarding degradation of Rhodamine B, compared to pure TiO2. The inter-band defect states formed as a result of incorporation of Gd3+ ions in the TiO2 matrix are most probably the cause of observed improved photoacatalytic activity and optical properties of the doped TiO2 nanoparticles.",
journal = "Digest Journal of Nanomaterials and Biostructures",
title = "Room-Temperature Synthesis and Photocatalytic Activity of Titania Nanoparticles Doped with Gadolinium Ions",
volume = "8",
number = "2",
pages = "871-U400",
url = "https://hdl.handle.net/21.15107/rcub_vinar_5619"
}

Abazović, N., Radoičić, M. B., Savić, T. D., Janković, I. A.,& Čomor, M.. (2013). Room-Temperature Synthesis and Photocatalytic Activity of Titania Nanoparticles Doped with Gadolinium Ions. in Digest Journal of Nanomaterials and Biostructures, 8(2), 871-U400.
https://hdl.handle.net/21.15107/rcub_vinar_5619

Abazović N, Radoičić MB, Savić TD, Janković IA, Čomor M. Room-Temperature Synthesis and Photocatalytic Activity of Titania Nanoparticles Doped with Gadolinium Ions. in Digest Journal of Nanomaterials and Biostructures. 2013;8(2):871-U400.
https://hdl.handle.net/21.15107/rcub_vinar_5619 .

Abazović, Nadica, Radoičić, Marija B., Savić, Tatjana D., Janković, Ivana A., Čomor, Mirjana, "Room-Temperature Synthesis and Photocatalytic Activity of Titania Nanoparticles Doped with Gadolinium Ions" in Digest Journal of Nanomaterials and Biostructures, 8, no. 2 (2013):871-U400,
https://hdl.handle.net/21.15107/rcub_vinar_5619 .

TY  - JOUR
AU  - Beloš, Milica V.
AU  - Abazović, Nadica
AU  - Kuljanin-Jakovljević, Jadranka Ž.
AU  - Janković, Ivana A.
AU  - Ahrenkiel, Scott Phillip
AU  - Mitrić, Miodrag
AU  - Čomor, Mirjana
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5767
AB  - Samples of AgInS2 and CuInS2 nanoparticles were synthesized by hot-injection method at 270 degrees C using 1-dodecanethiol (DT) and elemental sulphur (S) as sulphide precursors, and oleylamine as reaction medium and surfactant. Composition, crystal structure, and particle size of obtained materials were tracked by XRD and TEM/HRTEM measurements. It was shown that, due to its dual role as sulphur source and surfactant, DT drastically slows formation of desired material. Samples obtained with DT even after 4 h of reaction have traces of intermediary compound (beta-In2S3), whereas in samples synthesized with elemental S these traces are less pronounced. The growth mechanism and influence of each reaction step are discussed in detail.
T2  - Journal of Nanoparticle Research
T1  - Influence of sulphide precursor on crystal phase of ternary I-III-VI2 semiconductors
VL  - 15
IS  - 12
DO  - 10.1007/s11051-013-2148-6
ER  - 

@article{
author = "Beloš, Milica V. and Abazović, Nadica and Kuljanin-Jakovljević, Jadranka Ž. and Janković, Ivana A. and Ahrenkiel, Scott Phillip and Mitrić, Miodrag and Čomor, Mirjana",
year = "2013",
abstract = "Samples of AgInS2 and CuInS2 nanoparticles were synthesized by hot-injection method at 270 degrees C using 1-dodecanethiol (DT) and elemental sulphur (S) as sulphide precursors, and oleylamine as reaction medium and surfactant. Composition, crystal structure, and particle size of obtained materials were tracked by XRD and TEM/HRTEM measurements. It was shown that, due to its dual role as sulphur source and surfactant, DT drastically slows formation of desired material. Samples obtained with DT even after 4 h of reaction have traces of intermediary compound (beta-In2S3), whereas in samples synthesized with elemental S these traces are less pronounced. The growth mechanism and influence of each reaction step are discussed in detail.",
journal = "Journal of Nanoparticle Research",
title = "Influence of sulphide precursor on crystal phase of ternary I-III-VI2 semiconductors",
volume = "15",
number = "12",
doi = "10.1007/s11051-013-2148-6"
}

Beloš, M. V., Abazović, N., Kuljanin-Jakovljević, J. Ž., Janković, I. A., Ahrenkiel, S. P., Mitrić, M.,& Čomor, M.. (2013). Influence of sulphide precursor on crystal phase of ternary I-III-VI2 semiconductors. in Journal of Nanoparticle Research, 15(12).
https://doi.org/10.1007/s11051-013-2148-6

Beloš MV, Abazović N, Kuljanin-Jakovljević JŽ, Janković IA, Ahrenkiel SP, Mitrić M, Čomor M. Influence of sulphide precursor on crystal phase of ternary I-III-VI2 semiconductors. in Journal of Nanoparticle Research. 2013;15(12).
doi:10.1007/s11051-013-2148-6 .

Beloš, Milica V., Abazović, Nadica, Kuljanin-Jakovljević, Jadranka Ž., Janković, Ivana A., Ahrenkiel, Scott Phillip, Mitrić, Miodrag, Čomor, Mirjana, "Influence of sulphide precursor on crystal phase of ternary I-III-VI2 semiconductors" in Journal of Nanoparticle Research, 15, no. 12 (2013),
https://doi.org/10.1007/s11051-013-2148-6 . .

TY  - JOUR
AU  - Romčević, Nebojša Ž.
AU  - Petrović-Damjanović, M.
AU  - Romčević, Maja J.
AU  - Gilić, Martina D.
AU  - Klopotowski, L.
AU  - Dobrowolski, Witold D.
AU  - Kossut, J.
AU  - Janković, Ivana A.
AU  - Čomor, Mirjana
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5303
AB  - We have synthesized CdS and Cd0.7Mn0.3S nanocrystals with diameters of about 4.5 nm. These materials have been studied using photoluminescence spectroscopy with various excitation energies in the temperature range from 1.8 to 300 K, in magnetic field up to 5T. We registered surface and defect states as well as two Mn2+ energy levels that correspond to Mn2+ ions in two different crystal environments. We proposed the scheme of energy levels and transitions that explain obtained experimental results. (C) 2012 Elsevier B. V. All rights reserved.
T2  - Journal of Alloys and Compounds
T1  - Magnetic field influence on optical properties of Cd1-xMnxS (x=0; 0.3) quantum dots: Photoluminescence study
VL  - 553
SP  - 75
EP  - 78
DO  - 10.1016/j.jallcom.2012.11.112
ER  - 

@article{
author = "Romčević, Nebojša Ž. and Petrović-Damjanović, M. and Romčević, Maja J. and Gilić, Martina D. and Klopotowski, L. and Dobrowolski, Witold D. and Kossut, J. and Janković, Ivana A. and Čomor, Mirjana",
year = "2013",
abstract = "We have synthesized CdS and Cd0.7Mn0.3S nanocrystals with diameters of about 4.5 nm. These materials have been studied using photoluminescence spectroscopy with various excitation energies in the temperature range from 1.8 to 300 K, in magnetic field up to 5T. We registered surface and defect states as well as two Mn2+ energy levels that correspond to Mn2+ ions in two different crystal environments. We proposed the scheme of energy levels and transitions that explain obtained experimental results. (C) 2012 Elsevier B. V. All rights reserved.",
journal = "Journal of Alloys and Compounds",
title = "Magnetic field influence on optical properties of Cd1-xMnxS (x=0; 0.3) quantum dots: Photoluminescence study",
volume = "553",
pages = "75-78",
doi = "10.1016/j.jallcom.2012.11.112"
}

Romčević, N. Ž., Petrović-Damjanović, M., Romčević, M. J., Gilić, M. D., Klopotowski, L., Dobrowolski, W. D., Kossut, J., Janković, I. A.,& Čomor, M.. (2013). Magnetic field influence on optical properties of Cd1-xMnxS (x=0; 0.3) quantum dots: Photoluminescence study. in Journal of Alloys and Compounds, 553, 75-78.
https://doi.org/10.1016/j.jallcom.2012.11.112

Romčević NŽ, Petrović-Damjanović M, Romčević MJ, Gilić MD, Klopotowski L, Dobrowolski WD, Kossut J, Janković IA, Čomor M. Magnetic field influence on optical properties of Cd1-xMnxS (x=0; 0.3) quantum dots: Photoluminescence study. in Journal of Alloys and Compounds. 2013;553:75-78.
doi:10.1016/j.jallcom.2012.11.112 .

Romčević, Nebojša Ž., Petrović-Damjanović, M., Romčević, Maja J., Gilić, Martina D., Klopotowski, L., Dobrowolski, Witold D., Kossut, J., Janković, Ivana A., Čomor, Mirjana, "Magnetic field influence on optical properties of Cd1-xMnxS (x=0; 0.3) quantum dots: Photoluminescence study" in Journal of Alloys and Compounds, 553 (2013):75-78,
https://doi.org/10.1016/j.jallcom.2012.11.112 . .

TY  - JOUR
AU  - Radoičić, Marija B.
AU  - Janković, Ivana A.
AU  - Despotović, Vesna N.
AU  - Šojić, Daniela V.
AU  - Savić, Tatjana D.
AU  - Šaponjić, Zoran
AU  - Abramović, Biljana F.
AU  - Čomor, Mirjana
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5511
AB  - A study of photocatalytic activity of bare as prepared, bare aged and dopamine surface modified colloidal TiO2 nanoparticles was obtained following degradation reaction of herbicide RS-2-(4-chloro-o-tolyloxy)propionic acid under UV light irradiation. Results showed that the most active photocatalyst is bare aged TiO2 and the least active are dopamine modified nanoparticles. Results are discussed in the light of surface structure of TiO2 nanoparticles. The study of surface modification of TiO2 nanoparticles (4.5 nm, TiO2 NPs) with dopamine was also performed. The formation of inner-sphere charge-transfer complexes results in red shift of semiconductor absorption threshold (600 nm), compared to bare TiO2 NPs (380 nm). Effective band gap energy of 3.2 eV for bare TiO2 NPs is reduced to 2.1 eV for TiO2/dopamine charge transfer complexes. The binding structure was investigated by UV-vis and FTIR spectroscopy. The obtained optimal geometry for binding of dopamine to surface Ti atoms was binuclear bidentate-bridging. From the Benesi-Hildebrand plot, stability constant of the order 10(3) M-1 has been determined. (C) 2013 Elsevier B.V. All rights reserved.
T2  - Applied Catalysis. B: Environmental
T1  - The role of surface defect sites of titania nanoparticles in the photocatalysis: Aging and modification
VL  - 138
SP  - 122
EP  - 127
DO  - 10.1016/j.apcatb.2013.02.032
ER  - 

@article{
author = "Radoičić, Marija B. and Janković, Ivana A. and Despotović, Vesna N. and Šojić, Daniela V. and Savić, Tatjana D. and Šaponjić, Zoran and Abramović, Biljana F. and Čomor, Mirjana",
year = "2013",
abstract = "A study of photocatalytic activity of bare as prepared, bare aged and dopamine surface modified colloidal TiO2 nanoparticles was obtained following degradation reaction of herbicide RS-2-(4-chloro-o-tolyloxy)propionic acid under UV light irradiation. Results showed that the most active photocatalyst is bare aged TiO2 and the least active are dopamine modified nanoparticles. Results are discussed in the light of surface structure of TiO2 nanoparticles. The study of surface modification of TiO2 nanoparticles (4.5 nm, TiO2 NPs) with dopamine was also performed. The formation of inner-sphere charge-transfer complexes results in red shift of semiconductor absorption threshold (600 nm), compared to bare TiO2 NPs (380 nm). Effective band gap energy of 3.2 eV for bare TiO2 NPs is reduced to 2.1 eV for TiO2/dopamine charge transfer complexes. The binding structure was investigated by UV-vis and FTIR spectroscopy. The obtained optimal geometry for binding of dopamine to surface Ti atoms was binuclear bidentate-bridging. From the Benesi-Hildebrand plot, stability constant of the order 10(3) M-1 has been determined. (C) 2013 Elsevier B.V. All rights reserved.",
journal = "Applied Catalysis. B: Environmental",
title = "The role of surface defect sites of titania nanoparticles in the photocatalysis: Aging and modification",
volume = "138",
pages = "122-127",
doi = "10.1016/j.apcatb.2013.02.032"
}

Radoičić, M. B., Janković, I. A., Despotović, V. N., Šojić, D. V., Savić, T. D., Šaponjić, Z., Abramović, B. F.,& Čomor, M.. (2013). The role of surface defect sites of titania nanoparticles in the photocatalysis: Aging and modification. in Applied Catalysis. B: Environmental, 138, 122-127.
https://doi.org/10.1016/j.apcatb.2013.02.032

Radoičić MB, Janković IA, Despotović VN, Šojić DV, Savić TD, Šaponjić Z, Abramović BF, Čomor M. The role of surface defect sites of titania nanoparticles in the photocatalysis: Aging and modification. in Applied Catalysis. B: Environmental. 2013;138:122-127.
doi:10.1016/j.apcatb.2013.02.032 .

Radoičić, Marija B., Janković, Ivana A., Despotović, Vesna N., Šojić, Daniela V., Savić, Tatjana D., Šaponjić, Zoran, Abramović, Biljana F., Čomor, Mirjana, "The role of surface defect sites of titania nanoparticles in the photocatalysis: Aging and modification" in Applied Catalysis. B: Environmental, 138 (2013):122-127,
https://doi.org/10.1016/j.apcatb.2013.02.032 . .

TY  - JOUR
AU  - Radoičić, Marija B.
AU  - Šaponjić, Zoran
AU  - Janković, Ivana A.
AU  - Ćirić-Marjanović, Gordana N.
AU  - Ahrenkiel, Scott Phillip
AU  - Čomor, Mirjana
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5418
AB  - Polyaniline/TiO2 nanocomposite powders were successfully synthesized by the oxidative polymerization of aniline with ammonium peroxydisulfate in water without the addition of acid, in the presence of colloidal TiO2 nanoparticles (d similar to 4.5 nm). The morphological, structural, and optical properties of the synthesized nanocomposites prepared at initial TiO2/aniline mole ratios of 50,100, and 150 were studied using transmission electron microscopy, X-ray powder diffraction, Raman and UV-vis spectroscopies. The presence of emeraldine salt and the base form of linear polyaniline (PANI) chains as well as the presence of phenazine units, branched PANI chains, oligomeric structures and short PANI chains in PANI/TiO2 nanocomposites was confirmed by Raman spectroscopy. The anatase crystal structure of TiO2 nanopartides in all the nanocomposites was confirmed by X-ray powder diffraction measurements and by Raman spectroscopy. The photocatalytic activities of PANI/TiO2 nanocomposites were evaluated using the photocatalytic degradation of Rhodamine B and Methylene blue as model compounds and compared with the activity of bare colloidal TiO2 nanoparticles. Enhanced degradation efficiencies in the dyes used were observed. A possible explanation for the PANI/TiO2 photocatalytic activities was suggested, taking into account the influence of the molecular structures of the used dyes and PANI in PANI/TiO2 nanocomposites. (C) 2013 Elsevier B.V. All rights reserved.
T2  - Applied Catalysis. B: Environmental
T1  - Improvements to the photocatalytic efficiency of polyaniline modified TiO2 nanoparticles
VL  - 136
SP  - 133
EP  - 139
DO  - 10.1016/j.apcatb.2013.01.007
ER  - 

@article{
author = "Radoičić, Marija B. and Šaponjić, Zoran and Janković, Ivana A. and Ćirić-Marjanović, Gordana N. and Ahrenkiel, Scott Phillip and Čomor, Mirjana",
year = "2013",
abstract = "Polyaniline/TiO2 nanocomposite powders were successfully synthesized by the oxidative polymerization of aniline with ammonium peroxydisulfate in water without the addition of acid, in the presence of colloidal TiO2 nanoparticles (d similar to 4.5 nm). The morphological, structural, and optical properties of the synthesized nanocomposites prepared at initial TiO2/aniline mole ratios of 50,100, and 150 were studied using transmission electron microscopy, X-ray powder diffraction, Raman and UV-vis spectroscopies. The presence of emeraldine salt and the base form of linear polyaniline (PANI) chains as well as the presence of phenazine units, branched PANI chains, oligomeric structures and short PANI chains in PANI/TiO2 nanocomposites was confirmed by Raman spectroscopy. The anatase crystal structure of TiO2 nanopartides in all the nanocomposites was confirmed by X-ray powder diffraction measurements and by Raman spectroscopy. The photocatalytic activities of PANI/TiO2 nanocomposites were evaluated using the photocatalytic degradation of Rhodamine B and Methylene blue as model compounds and compared with the activity of bare colloidal TiO2 nanoparticles. Enhanced degradation efficiencies in the dyes used were observed. A possible explanation for the PANI/TiO2 photocatalytic activities was suggested, taking into account the influence of the molecular structures of the used dyes and PANI in PANI/TiO2 nanocomposites. (C) 2013 Elsevier B.V. All rights reserved.",
journal = "Applied Catalysis. B: Environmental",
title = "Improvements to the photocatalytic efficiency of polyaniline modified TiO2 nanoparticles",
volume = "136",
pages = "133-139",
doi = "10.1016/j.apcatb.2013.01.007"
}

Radoičić, M. B., Šaponjić, Z., Janković, I. A., Ćirić-Marjanović, G. N., Ahrenkiel, S. P.,& Čomor, M.. (2013). Improvements to the photocatalytic efficiency of polyaniline modified TiO2 nanoparticles. in Applied Catalysis. B: Environmental, 136, 133-139.
https://doi.org/10.1016/j.apcatb.2013.01.007

Radoičić MB, Šaponjić Z, Janković IA, Ćirić-Marjanović GN, Ahrenkiel SP, Čomor M. Improvements to the photocatalytic efficiency of polyaniline modified TiO2 nanoparticles. in Applied Catalysis. B: Environmental. 2013;136:133-139.
doi:10.1016/j.apcatb.2013.01.007 .

Radoičić, Marija B., Šaponjić, Zoran, Janković, Ivana A., Ćirić-Marjanović, Gordana N., Ahrenkiel, Scott Phillip, Čomor, Mirjana, "Improvements to the photocatalytic efficiency of polyaniline modified TiO2 nanoparticles" in Applied Catalysis. B: Environmental, 136 (2013):133-139,
https://doi.org/10.1016/j.apcatb.2013.01.007 . .

TY  - JOUR
AU  - Savić, Tatjana D.
AU  - Šaponjić, Zoran
AU  - Čomor, Mirjana
AU  - Nedeljković, Jovan
AU  - Dramićanin, Miroslav
AU  - Nikolić, Marko G.
AU  - Veljkovic, Dusan Z.
AU  - Zarić, Snežana D.
AU  - Janković, Ivana A.
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5601
AB  - The surface modification of nanocrystalline TiO2 particles (45 angstrom) with salicylate-type ligands consisting of an extended aromatic ring system, specifically 3-hydroxy-2-naphthoic acid, 3,5-dihydroxy-2-naphthoic acid and 3,7-dihydroxy-2-naphthoic acid, was found to alter the optical properties of nanoparticles in a similar way to salicylic acid. The formation of the inner-sphere charge-transfer (CT) complexes results in a red shift of the semiconductor absorption compared to unmodified nanocrystallites and a reduction in the band gap upon the increase in the electron delocalization when including an additional ring. The investigated ligands have the optimal geometry for binding to surface Ti atoms, resulting in ring coordination complexes of a salicylate-type (binuclear bidentate binding-bridging) thus restoring the six-coordinated octahedral geometry of surface Ti atoms. From both absorption measurements in methanol/water = 90/10 solutions and steady-state quenching measurements of modifier fluorescence upon binding to TiO2 in aqueous solutions, stability constants in the order of 10(3) M-1 have been determined at pH 2 and pH 3. Fluorescence lifetime measurements, in the presence and absence of colloidal TiO2 nanoparticles, indicated that the fluorescence quenching process is primarily static quenching, thus proving the formation of a nonfluorescent CT complex. The binding structures were investigated by using FTIR spectroscopy. Quantum chemical calculations on model systems using density functional theory (DFT) were performed to obtain the vibrational frequencies of charge transfer complexes, and the calculated values were then compared with the experimental data.
T2  - Nanoscale
T1  - Surface modification of anatase nanoparticles with fused ring salicylate-type ligands (3-hydroxy-2-naphthoic acids): a combined DFT and experimental study of optical properties
VL  - 5
IS  - 16
SP  - 7601
EP  - 7612
DO  - 10.1039/c3nr01277h
ER  - 

@article{
author = "Savić, Tatjana D. and Šaponjić, Zoran and Čomor, Mirjana and Nedeljković, Jovan and Dramićanin, Miroslav and Nikolić, Marko G. and Veljkovic, Dusan Z. and Zarić, Snežana D. and Janković, Ivana A.",
year = "2013",
abstract = "The surface modification of nanocrystalline TiO2 particles (45 angstrom) with salicylate-type ligands consisting of an extended aromatic ring system, specifically 3-hydroxy-2-naphthoic acid, 3,5-dihydroxy-2-naphthoic acid and 3,7-dihydroxy-2-naphthoic acid, was found to alter the optical properties of nanoparticles in a similar way to salicylic acid. The formation of the inner-sphere charge-transfer (CT) complexes results in a red shift of the semiconductor absorption compared to unmodified nanocrystallites and a reduction in the band gap upon the increase in the electron delocalization when including an additional ring. The investigated ligands have the optimal geometry for binding to surface Ti atoms, resulting in ring coordination complexes of a salicylate-type (binuclear bidentate binding-bridging) thus restoring the six-coordinated octahedral geometry of surface Ti atoms. From both absorption measurements in methanol/water = 90/10 solutions and steady-state quenching measurements of modifier fluorescence upon binding to TiO2 in aqueous solutions, stability constants in the order of 10(3) M-1 have been determined at pH 2 and pH 3. Fluorescence lifetime measurements, in the presence and absence of colloidal TiO2 nanoparticles, indicated that the fluorescence quenching process is primarily static quenching, thus proving the formation of a nonfluorescent CT complex. The binding structures were investigated by using FTIR spectroscopy. Quantum chemical calculations on model systems using density functional theory (DFT) were performed to obtain the vibrational frequencies of charge transfer complexes, and the calculated values were then compared with the experimental data.",
journal = "Nanoscale",
title = "Surface modification of anatase nanoparticles with fused ring salicylate-type ligands (3-hydroxy-2-naphthoic acids): a combined DFT and experimental study of optical properties",
volume = "5",
number = "16",
pages = "7601-7612",
doi = "10.1039/c3nr01277h"
}

Savić, T. D., Šaponjić, Z., Čomor, M., Nedeljković, J., Dramićanin, M., Nikolić, M. G., Veljkovic, D. Z., Zarić, S. D.,& Janković, I. A.. (2013). Surface modification of anatase nanoparticles with fused ring salicylate-type ligands (3-hydroxy-2-naphthoic acids): a combined DFT and experimental study of optical properties. in Nanoscale, 5(16), 7601-7612.
https://doi.org/10.1039/c3nr01277h

Savić TD, Šaponjić Z, Čomor M, Nedeljković J, Dramićanin M, Nikolić MG, Veljkovic DZ, Zarić SD, Janković IA. Surface modification of anatase nanoparticles with fused ring salicylate-type ligands (3-hydroxy-2-naphthoic acids): a combined DFT and experimental study of optical properties. in Nanoscale. 2013;5(16):7601-7612.
doi:10.1039/c3nr01277h .

Savić, Tatjana D., Šaponjić, Zoran, Čomor, Mirjana, Nedeljković, Jovan, Dramićanin, Miroslav, Nikolić, Marko G., Veljkovic, Dusan Z., Zarić, Snežana D., Janković, Ivana A., "Surface modification of anatase nanoparticles with fused ring salicylate-type ligands (3-hydroxy-2-naphthoic acids): a combined DFT and experimental study of optical properties" in Nanoscale, 5, no. 16 (2013):7601-7612,
https://doi.org/10.1039/c3nr01277h . .

TY  - JOUR
AU  - Validžić, Ivana Lj.
AU  - Abazović, Nadica
AU  - Ahrenkiel, Scott Phillip
AU  - Janković, Ivana A.
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4963
AB  - In this paper we report the synthesis of antimony sulphide (Sb2S3) nanobars performed using a simple organo-colloidal synthetic method. The as-synthesised Sb2S3 nanobars with various precursor concentrations and heating times showed differences in the morphology (open and enclosing forms) and structural parameters. UV-vis absorption measurements revealed that the optical band gap energies lay in the red part of the solar spectrum. The observed band gap energies, of nearly the same values (similar to 1.6 eV), proved that precursor concentrations and heating times had no effect on them. The structure refinement showed that the Sb2S3 powder belonged to the orthorhombic type with a space group Pbnm. It was found that Sb2S3 nanobars predominantly grew along the [010] direction, and that the unit cell parameters and the preferred orientation parameter (tau) refined against experimental data were quite dependent on both the precursor concentration and the heating time. The optimum heating time to nicely follow the dependence of structural parameters on the precursor concentration was observed. (C) 2012 Elsevier B.V. All rights reserved.
T2  - Journal of Crystal Growth
T1  - Structural and morphological dependences of Sb2S3 nanobars synthesised by organo-colloidal process on precursor concentrations and reaction times
VL  - 354
IS  - 1
SP  - 157
EP  - 163
DO  - 10.1016/j.jcrysgro.2012.06.003
ER  - 

@article{
author = "Validžić, Ivana Lj. and Abazović, Nadica and Ahrenkiel, Scott Phillip and Janković, Ivana A.",
year = "2012",
abstract = "In this paper we report the synthesis of antimony sulphide (Sb2S3) nanobars performed using a simple organo-colloidal synthetic method. The as-synthesised Sb2S3 nanobars with various precursor concentrations and heating times showed differences in the morphology (open and enclosing forms) and structural parameters. UV-vis absorption measurements revealed that the optical band gap energies lay in the red part of the solar spectrum. The observed band gap energies, of nearly the same values (similar to 1.6 eV), proved that precursor concentrations and heating times had no effect on them. The structure refinement showed that the Sb2S3 powder belonged to the orthorhombic type with a space group Pbnm. It was found that Sb2S3 nanobars predominantly grew along the [010] direction, and that the unit cell parameters and the preferred orientation parameter (tau) refined against experimental data were quite dependent on both the precursor concentration and the heating time. The optimum heating time to nicely follow the dependence of structural parameters on the precursor concentration was observed. (C) 2012 Elsevier B.V. All rights reserved.",
journal = "Journal of Crystal Growth",
title = "Structural and morphological dependences of Sb2S3 nanobars synthesised by organo-colloidal process on precursor concentrations and reaction times",
volume = "354",
number = "1",
pages = "157-163",
doi = "10.1016/j.jcrysgro.2012.06.003"
}

Validžić, I. Lj., Abazović, N., Ahrenkiel, S. P.,& Janković, I. A.. (2012). Structural and morphological dependences of Sb2S3 nanobars synthesised by organo-colloidal process on precursor concentrations and reaction times. in Journal of Crystal Growth, 354(1), 157-163.
https://doi.org/10.1016/j.jcrysgro.2012.06.003

Validžić IL, Abazović N, Ahrenkiel SP, Janković IA. Structural and morphological dependences of Sb2S3 nanobars synthesised by organo-colloidal process on precursor concentrations and reaction times. in Journal of Crystal Growth. 2012;354(1):157-163.
doi:10.1016/j.jcrysgro.2012.06.003 .

Validžić, Ivana Lj., Abazović, Nadica, Ahrenkiel, Scott Phillip, Janković, Ivana A., "Structural and morphological dependences of Sb2S3 nanobars synthesised by organo-colloidal process on precursor concentrations and reaction times" in Journal of Crystal Growth, 354, no. 1 (2012):157-163,
https://doi.org/10.1016/j.jcrysgro.2012.06.003 . .

TY  - JOUR
AU  - Abazović, Nadica
AU  - Čomor, Mirjana
AU  - Mitrić, Miodrag
AU  - Piscopiello, Emanuela
AU  - Radetić, Tamara
AU  - Janković, Ivana A.
AU  - Nedeljković, Jovan
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4788
AB  - Nanosized AgInSe2 particles (d similar to 7-25 nm) were synthesized using colloidal chemistry method at 270 degrees C. As solvents/surface ligands 1-octadecene, trioctylphosphine, and oleylamine were used. It was shown that choice of ligand has crucial impact not only on final crystal phase of nanoparticles, but also at mechanism of crystal growth. X-ray diffraction and TEM/HRTEM techniques were used to identify obtained crystal phases and to measure average size and shape of nanoparticles. UV/Vis data were used to estimate band-gap energies of obtained samples. It was shown that presented routes can provide synthesis of nanoparticles with desired crystal phase (tetragonal and/or orthorhombic), with band-gap energies in the range from 1.25 to 1.53 eV.
T2  - Journal of Nanoparticle Research
T1  - Ligand mediated synthesis of AgInSe2 nanoparticles with tetragonal/orthorhombic crystal phases
VL  - 14
IS  - 4
SP  - Art. no.: 810
DO  - 10.1007/s11051-012-0810-z
ER  - 

@article{
author = "Abazović, Nadica and Čomor, Mirjana and Mitrić, Miodrag and Piscopiello, Emanuela and Radetić, Tamara and Janković, Ivana A. and Nedeljković, Jovan",
year = "2012",
abstract = "Nanosized AgInSe2 particles (d similar to 7-25 nm) were synthesized using colloidal chemistry method at 270 degrees C. As solvents/surface ligands 1-octadecene, trioctylphosphine, and oleylamine were used. It was shown that choice of ligand has crucial impact not only on final crystal phase of nanoparticles, but also at mechanism of crystal growth. X-ray diffraction and TEM/HRTEM techniques were used to identify obtained crystal phases and to measure average size and shape of nanoparticles. UV/Vis data were used to estimate band-gap energies of obtained samples. It was shown that presented routes can provide synthesis of nanoparticles with desired crystal phase (tetragonal and/or orthorhombic), with band-gap energies in the range from 1.25 to 1.53 eV.",
journal = "Journal of Nanoparticle Research",
title = "Ligand mediated synthesis of AgInSe2 nanoparticles with tetragonal/orthorhombic crystal phases",
volume = "14",
number = "4",
pages = "Art. no.: 810",
doi = "10.1007/s11051-012-0810-z"
}

Abazović, N., Čomor, M., Mitrić, M., Piscopiello, E., Radetić, T., Janković, I. A.,& Nedeljković, J.. (2012). Ligand mediated synthesis of AgInSe2 nanoparticles with tetragonal/orthorhombic crystal phases. in Journal of Nanoparticle Research, 14(4), Art. no.: 810.
https://doi.org/10.1007/s11051-012-0810-z

Abazović N, Čomor M, Mitrić M, Piscopiello E, Radetić T, Janković IA, Nedeljković J. Ligand mediated synthesis of AgInSe2 nanoparticles with tetragonal/orthorhombic crystal phases. in Journal of Nanoparticle Research. 2012;14(4):Art. no.: 810.
doi:10.1007/s11051-012-0810-z .

Abazović, Nadica, Čomor, Mirjana, Mitrić, Miodrag, Piscopiello, Emanuela, Radetić, Tamara, Janković, Ivana A., Nedeljković, Jovan, "Ligand mediated synthesis of AgInSe2 nanoparticles with tetragonal/orthorhombic crystal phases" in Journal of Nanoparticle Research, 14, no. 4 (2012):Art. no.: 810,
https://doi.org/10.1007/s11051-012-0810-z . .

TY  - JOUR
AU  - Savić, Tatjana D.
AU  - Janković, Ivana A.
AU  - Šaponjić, Zoran
AU  - Čomor, Mirjana
AU  - Veljkovic, Dusan Z.
AU  - Zarić, Snežana D.
AU  - Nedeljković, Jovan
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4698
AB  - Surface modification of nanocrystalline TiO2 particles (45 angstrom) with catecholate-type ligands consisting of an extended aromatic ring system, i.e., 2,3-dihydroxynaphthalene and anthrarobin, was found to alter the optical properties of the nanoparticles in a similar way to modification with catechol. The formation of inner-sphere charge-transfer (CT) complexes results in a red shift of the semiconductor absorption compared to unmodified nanocrystallites and the reduction of the band gap upon the increase of the electron delocalization on the inclusion of additional rings. The binding structures were investigated by FTIR spectroscopy. The investigated ligands have the optimal geometry for binding to surface Ti atoms, resulting in ring coordination complexes of catecholate type (binuclear bidentate binding-bridging) thus restoring the six-coordinated octahedral geometry of surface Ti atoms. From the Benesi-Hildebrand plot, stability constants in methanol/water = 90/10 solutions at pH 2 of the order 10(3) M-1 have been determined. Quantum chemical calculations on model systems using density functional theory (DFT) were performed to obtain vibrational frequencies of charge transfer complexes, and the calculated values were compared with the experimental data.
T2  - Nanoscale
T1  - Surface modification of anatase nanoparticles with fused ring catecholate type ligands: a combined DFT and experimental study of optical properties
VL  - 4
IS  - 5
SP  - 1612
EP  - 1619
DO  - 10.1039/c2nr11501h
ER  - 

@article{
author = "Savić, Tatjana D. and Janković, Ivana A. and Šaponjić, Zoran and Čomor, Mirjana and Veljkovic, Dusan Z. and Zarić, Snežana D. and Nedeljković, Jovan",
year = "2012",
abstract = "Surface modification of nanocrystalline TiO2 particles (45 angstrom) with catecholate-type ligands consisting of an extended aromatic ring system, i.e., 2,3-dihydroxynaphthalene and anthrarobin, was found to alter the optical properties of the nanoparticles in a similar way to modification with catechol. The formation of inner-sphere charge-transfer (CT) complexes results in a red shift of the semiconductor absorption compared to unmodified nanocrystallites and the reduction of the band gap upon the increase of the electron delocalization on the inclusion of additional rings. The binding structures were investigated by FTIR spectroscopy. The investigated ligands have the optimal geometry for binding to surface Ti atoms, resulting in ring coordination complexes of catecholate type (binuclear bidentate binding-bridging) thus restoring the six-coordinated octahedral geometry of surface Ti atoms. From the Benesi-Hildebrand plot, stability constants in methanol/water = 90/10 solutions at pH 2 of the order 10(3) M-1 have been determined. Quantum chemical calculations on model systems using density functional theory (DFT) were performed to obtain vibrational frequencies of charge transfer complexes, and the calculated values were compared with the experimental data.",
journal = "Nanoscale",
title = "Surface modification of anatase nanoparticles with fused ring catecholate type ligands: a combined DFT and experimental study of optical properties",
volume = "4",
number = "5",
pages = "1612-1619",
doi = "10.1039/c2nr11501h"
}

Savić, T. D., Janković, I. A., Šaponjić, Z., Čomor, M., Veljkovic, D. Z., Zarić, S. D.,& Nedeljković, J.. (2012). Surface modification of anatase nanoparticles with fused ring catecholate type ligands: a combined DFT and experimental study of optical properties. in Nanoscale, 4(5), 1612-1619.
https://doi.org/10.1039/c2nr11501h

Savić TD, Janković IA, Šaponjić Z, Čomor M, Veljkovic DZ, Zarić SD, Nedeljković J. Surface modification of anatase nanoparticles with fused ring catecholate type ligands: a combined DFT and experimental study of optical properties. in Nanoscale. 2012;4(5):1612-1619.
doi:10.1039/c2nr11501h .

Savić, Tatjana D., Janković, Ivana A., Šaponjić, Zoran, Čomor, Mirjana, Veljkovic, Dusan Z., Zarić, Snežana D., Nedeljković, Jovan, "Surface modification of anatase nanoparticles with fused ring catecholate type ligands: a combined DFT and experimental study of optical properties" in Nanoscale, 4, no. 5 (2012):1612-1619,
https://doi.org/10.1039/c2nr11501h . .

TY  - CONF
AU  - Šećerov, Bojana
AU  - Janković, Ivana A.
AU  - Dramićanin, Miroslav
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9307
AB  - Aérial L-alanine pellet dosimeter is characterized as the dispersion of dose
measurement values in order to determine the level of uncertainty caused by
dosimeter itself. The results of repeated measurements indicate that the uncertainty
of 1.2% could be attributed to the homogeneity of alanine in dosimeter pellets. It
was obtained by analyzing the results of measurements of the different dosimeters
from the same batch that the uncertainty due to difference in dosimeter mass is 1%.
The total uncertainty due to dosimeter itself is 1.5%.
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2012 : 11th international conference on fundamental and applied aspects of physical chemistry
T1  - Characterization of dosimeters used in radiation processing
VL  - 1
SP  - 412
EP  - 414
UR  - https://hdl.handle.net/21.15107/rcub_vinar_9307
ER  - 

@conference{
author = "Šećerov, Bojana and Janković, Ivana A. and Dramićanin, Miroslav",
year = "2012",
abstract = "Aérial L-alanine pellet dosimeter is characterized as the dispersion of dose
measurement values in order to determine the level of uncertainty caused by
dosimeter itself. The results of repeated measurements indicate that the uncertainty
of 1.2% could be attributed to the homogeneity of alanine in dosimeter pellets. It
was obtained by analyzing the results of measurements of the different dosimeters
from the same batch that the uncertainty due to difference in dosimeter mass is 1%.
The total uncertainty due to dosimeter itself is 1.5%.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2012 : 11th international conference on fundamental and applied aspects of physical chemistry",
title = "Characterization of dosimeters used in radiation processing",
volume = "1",
pages = "412-414",
url = "https://hdl.handle.net/21.15107/rcub_vinar_9307"
}

Šećerov, B., Janković, I. A.,& Dramićanin, M.. (2012). Characterization of dosimeters used in radiation processing. in Physical chemistry 2012 : 11th international conference on fundamental and applied aspects of physical chemistry
Society of Physical Chemists of Serbia., 1, 412-414.
https://hdl.handle.net/21.15107/rcub_vinar_9307

Šećerov B, Janković IA, Dramićanin M. Characterization of dosimeters used in radiation processing. in Physical chemistry 2012 : 11th international conference on fundamental and applied aspects of physical chemistry. 2012;1:412-414.
https://hdl.handle.net/21.15107/rcub_vinar_9307 .

Šećerov, Bojana, Janković, Ivana A., Dramićanin, Miroslav, "Characterization of dosimeters used in radiation processing" in Physical chemistry 2012 : 11th international conference on fundamental and applied aspects of physical chemistry, 1 (2012):412-414,
https://hdl.handle.net/21.15107/rcub_vinar_9307 .

TY  - JOUR
AU  - Jovanović, Dragana J.
AU  - Validžić, Ivana Lj.
AU  - Janković, Ivana A.
AU  - Nedeljković, Jovan
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4591
AB  - Two different morphologies of bismuth sulphide (Bi2S3), nanospheres and nanorods, were obtained in W/O microemulsions (cyclohexane / Triton X-100 / n-pentanol / water) as a reaction medium. The structural characterization of the Bi2S3 nanoparticulates was performed using transmission electron microscopy (TEM) and X-ray diffraction (XRD) analysis. The difference in morphology was achieved by adjusting reactant concentrations. The Bi2S3 nanospheres have bimodal size distribution with sizes in the range 2-5 nm and 20-40 nm while the diameter of nanorods is in between 5 and 20 nm and their length is in the range from 150 to 400 nm. Both kinds of nanostructures are well-crystalline although they were prepared at 60 degrees C without any further thermal treatment. Based on optical measurements the band gaps were estimated to be 1.5 and 1.57 eV for nanospheres and nanorods, respectively. These values are larger compared to the bulk material as a consequence of reduced dimensionality of the Bi2S3 nanostructures.
T2  - Journal of Optoelectronics and Advanced Materials
T1  - Low temperature quaternary microemulsion synthesis of Bi2S3 nanospheres and nanorods
VL  - 13
IS  - 9-10
SP  - 1294
EP  - 1297
UR  - https://hdl.handle.net/21.15107/rcub_vinar_4591
ER  - 

@article{
author = "Jovanović, Dragana J. and Validžić, Ivana Lj. and Janković, Ivana A. and Nedeljković, Jovan",
year = "2011",
abstract = "Two different morphologies of bismuth sulphide (Bi2S3), nanospheres and nanorods, were obtained in W/O microemulsions (cyclohexane / Triton X-100 / n-pentanol / water) as a reaction medium. The structural characterization of the Bi2S3 nanoparticulates was performed using transmission electron microscopy (TEM) and X-ray diffraction (XRD) analysis. The difference in morphology was achieved by adjusting reactant concentrations. The Bi2S3 nanospheres have bimodal size distribution with sizes in the range 2-5 nm and 20-40 nm while the diameter of nanorods is in between 5 and 20 nm and their length is in the range from 150 to 400 nm. Both kinds of nanostructures are well-crystalline although they were prepared at 60 degrees C without any further thermal treatment. Based on optical measurements the band gaps were estimated to be 1.5 and 1.57 eV for nanospheres and nanorods, respectively. These values are larger compared to the bulk material as a consequence of reduced dimensionality of the Bi2S3 nanostructures.",
journal = "Journal of Optoelectronics and Advanced Materials",
title = "Low temperature quaternary microemulsion synthesis of Bi2S3 nanospheres and nanorods",
volume = "13",
number = "9-10",
pages = "1294-1297",
url = "https://hdl.handle.net/21.15107/rcub_vinar_4591"
}

Jovanović, D. J., Validžić, I. Lj., Janković, I. A.,& Nedeljković, J.. (2011). Low temperature quaternary microemulsion synthesis of Bi2S3 nanospheres and nanorods. in Journal of Optoelectronics and Advanced Materials, 13(9-10), 1294-1297.
https://hdl.handle.net/21.15107/rcub_vinar_4591

Jovanović DJ, Validžić IL, Janković IA, Nedeljković J. Low temperature quaternary microemulsion synthesis of Bi2S3 nanospheres and nanorods. in Journal of Optoelectronics and Advanced Materials. 2011;13(9-10):1294-1297.
https://hdl.handle.net/21.15107/rcub_vinar_4591 .

Jovanović, Dragana J., Validžić, Ivana Lj., Janković, Ivana A., Nedeljković, Jovan, "Low temperature quaternary microemulsion synthesis of Bi2S3 nanospheres and nanorods" in Journal of Optoelectronics and Advanced Materials, 13, no. 9-10 (2011):1294-1297,
https://hdl.handle.net/21.15107/rcub_vinar_4591 .

TY  - CONF
AU  - Radoičić, Marija B.
AU  - Janković, Ivana A.
AU  - Despotović, Vesna N.
AU  - Šojić, Daniela V.
AU  - Šaponjić, Zoran
AU  - Abramović, Biljana F.
AU  - Čomor, Mirjana
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9289
AB  - Photocatalytic activity of bare colloidal TiO2 nanoparticles (NPs, d~45Å) and
surface modified with dopamine was obtained following degradation reaction of
herbicide RS-2-(4-chloro-o-tolyloxy)propionic acid (mecoprop, MCPP, C10H11ClO3)
under UV light irradiation. Results indicated that inner sphere charge transfer (CT)
complex is formed on the surface of TiO2 NPs due to modification with dopamine
which induced decreasing of the photocatalytic efficacy of TiO2 NPs.
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2010 : 10th international conference on fundamental and applied aspects of physical chemistry
T1  - Photocatalytic activity of TiO2 nanoparticles modified with dopamine
UR  - https://hdl.handle.net/21.15107/rcub_vinar_9289
ER  - 

@conference{
author = "Radoičić, Marija B. and Janković, Ivana A. and Despotović, Vesna N. and Šojić, Daniela V. and Šaponjić, Zoran and Abramović, Biljana F. and Čomor, Mirjana",
year = "2010",
abstract = "Photocatalytic activity of bare colloidal TiO2 nanoparticles (NPs, d~45Å) and
surface modified with dopamine was obtained following degradation reaction of
herbicide RS-2-(4-chloro-o-tolyloxy)propionic acid (mecoprop, MCPP, C10H11ClO3)
under UV light irradiation. Results indicated that inner sphere charge transfer (CT)
complex is formed on the surface of TiO2 NPs due to modification with dopamine
which induced decreasing of the photocatalytic efficacy of TiO2 NPs.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2010 : 10th international conference on fundamental and applied aspects of physical chemistry",
title = "Photocatalytic activity of TiO2 nanoparticles modified with dopamine",
url = "https://hdl.handle.net/21.15107/rcub_vinar_9289"
}

Radoičić, M. B., Janković, I. A., Despotović, V. N., Šojić, D. V., Šaponjić, Z., Abramović, B. F.,& Čomor, M.. (2010). Photocatalytic activity of TiO2 nanoparticles modified with dopamine. in Physical chemistry 2010 : 10th international conference on fundamental and applied aspects of physical chemistry
Society of Physical Chemists of Serbia..
https://hdl.handle.net/21.15107/rcub_vinar_9289

Radoičić MB, Janković IA, Despotović VN, Šojić DV, Šaponjić Z, Abramović BF, Čomor M. Photocatalytic activity of TiO2 nanoparticles modified with dopamine. in Physical chemistry 2010 : 10th international conference on fundamental and applied aspects of physical chemistry. 2010;.
https://hdl.handle.net/21.15107/rcub_vinar_9289 .

Radoičić, Marija B., Janković, Ivana A., Despotović, Vesna N., Šojić, Daniela V., Šaponjić, Zoran, Abramović, Biljana F., Čomor, Mirjana, "Photocatalytic activity of TiO2 nanoparticles modified with dopamine" in Physical chemistry 2010 : 10th international conference on fundamental and applied aspects of physical chemistry (2010),
https://hdl.handle.net/21.15107/rcub_vinar_9289 .

TY  - JOUR
AU  - Janković, Ivana A.
AU  - Šaponjić, Zoran
AU  - Džunuzović, Enis S.
AU  - Nedeljković, Jovan
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3853
AB  - Surface modification of nanocrystalline TiO2 particles (45 ) with bidentate benzene derivatives (catechol, pyrogallol, and gallic acid) was found to alter optical properties of nanoparticles. The formation of the inner-sphere charge-transfer complexes results in a red shift of the semiconductor absorption compared to unmodified nanocrystallites. The binding structures were investigated by using FTIR spectroscopy. The investigated ligands have the optimal geometry for chelating surface Ti atoms, resulting in ring coordination complexes (catecholate type of binuclear bidentate binding-bridging) thus restoring in six-coordinated octahedral geometry of surface Ti atoms. From the Benesi-Hildebrand plot, the stability constants at pH 2 of the order 10(3) M-1 have been determined.
T2  - Nanoscale Research Letters
T1  - New Hybrid Properties of TiO2 Nanoparticles Surface Modified With Catecholate Type Ligands
VL  - 5
IS  - 1
SP  - 81
EP  - 88
DO  - 10.1007/s11671-009-9447-y
ER  - 

@article{
author = "Janković, Ivana A. and Šaponjić, Zoran and Džunuzović, Enis S. and Nedeljković, Jovan",
year = "2010",
abstract = "Surface modification of nanocrystalline TiO2 particles (45 ) with bidentate benzene derivatives (catechol, pyrogallol, and gallic acid) was found to alter optical properties of nanoparticles. The formation of the inner-sphere charge-transfer complexes results in a red shift of the semiconductor absorption compared to unmodified nanocrystallites. The binding structures were investigated by using FTIR spectroscopy. The investigated ligands have the optimal geometry for chelating surface Ti atoms, resulting in ring coordination complexes (catecholate type of binuclear bidentate binding-bridging) thus restoring in six-coordinated octahedral geometry of surface Ti atoms. From the Benesi-Hildebrand plot, the stability constants at pH 2 of the order 10(3) M-1 have been determined.",
journal = "Nanoscale Research Letters",
title = "New Hybrid Properties of TiO2 Nanoparticles Surface Modified With Catecholate Type Ligands",
volume = "5",
number = "1",
pages = "81-88",
doi = "10.1007/s11671-009-9447-y"
}

Janković, I. A., Šaponjić, Z., Džunuzović, E. S.,& Nedeljković, J.. (2010). New Hybrid Properties of TiO2 Nanoparticles Surface Modified With Catecholate Type Ligands. in Nanoscale Research Letters, 5(1), 81-88.
https://doi.org/10.1007/s11671-009-9447-y

Janković IA, Šaponjić Z, Džunuzović ES, Nedeljković J. New Hybrid Properties of TiO2 Nanoparticles Surface Modified With Catecholate Type Ligands. in Nanoscale Research Letters. 2010;5(1):81-88.
doi:10.1007/s11671-009-9447-y .

Janković, Ivana A., Šaponjić, Zoran, Džunuzović, Enis S., Nedeljković, Jovan, "New Hybrid Properties of TiO2 Nanoparticles Surface Modified With Catecholate Type Ligands" in Nanoscale Research Letters, 5, no. 1 (2010):81-88,
https://doi.org/10.1007/s11671-009-9447-y . .

TY  - JOUR
AU  - Janković, Ivana A.
AU  - Šaponjić, Zoran
AU  - Čomor, Mirjana
AU  - Nedeljković, Jovan
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3745
AB  - Surface modification of nanocrystalline TiO2 particles (45 and ) with bidentate benzene derivatives, that is, 2-hydroxybenzoic acid, 2,5-dihydroxybenzoic acid, 2,3-dihydroxybenzoic acid, 3,4-dihydroxybenzoic acid, and catechol was found to alter optical properties of nanoparticles. The formation of the inner-sphere charge transfer (CT) complexes results in a red shift of the semiconductor absorption compared to unmodified nanocrystallites. The binding structures were investigated by using FTIR spectroscopy. The investigated ligands have the optimal geometry for chelating surface Ti atoms, resulting in ring coordination complexes (catecholate or salycilate type of binuclear bidentate binding), thus restoring six-coordinated octahedral geometry of surface Ti atoms. From the Benesi-Hildebrand plot, the stability constants at pH 2 of the order 10(3) M-1 have been determined.
T2  - Journal of Physical Chemistry. C
T1  - Surface Modification of Colloidal TiO2 Nanoparticles with Bidentate Benzene Derivatives
VL  - 113
IS  - 29
SP  - 12645
EP  - 12652
DO  - 10.1021/jp9013338
ER  - 

@article{
author = "Janković, Ivana A. and Šaponjić, Zoran and Čomor, Mirjana and Nedeljković, Jovan",
year = "2009",
abstract = "Surface modification of nanocrystalline TiO2 particles (45 and ) with bidentate benzene derivatives, that is, 2-hydroxybenzoic acid, 2,5-dihydroxybenzoic acid, 2,3-dihydroxybenzoic acid, 3,4-dihydroxybenzoic acid, and catechol was found to alter optical properties of nanoparticles. The formation of the inner-sphere charge transfer (CT) complexes results in a red shift of the semiconductor absorption compared to unmodified nanocrystallites. The binding structures were investigated by using FTIR spectroscopy. The investigated ligands have the optimal geometry for chelating surface Ti atoms, resulting in ring coordination complexes (catecholate or salycilate type of binuclear bidentate binding), thus restoring six-coordinated octahedral geometry of surface Ti atoms. From the Benesi-Hildebrand plot, the stability constants at pH 2 of the order 10(3) M-1 have been determined.",
journal = "Journal of Physical Chemistry. C",
title = "Surface Modification of Colloidal TiO2 Nanoparticles with Bidentate Benzene Derivatives",
volume = "113",
number = "29",
pages = "12645-12652",
doi = "10.1021/jp9013338"
}

Janković, I. A., Šaponjić, Z., Čomor, M.,& Nedeljković, J.. (2009). Surface Modification of Colloidal TiO2 Nanoparticles with Bidentate Benzene Derivatives. in Journal of Physical Chemistry. C, 113(29), 12645-12652.
https://doi.org/10.1021/jp9013338

Janković IA, Šaponjić Z, Čomor M, Nedeljković J. Surface Modification of Colloidal TiO2 Nanoparticles with Bidentate Benzene Derivatives. in Journal of Physical Chemistry. C. 2009;113(29):12645-12652.
doi:10.1021/jp9013338 .

Janković, Ivana A., Šaponjić, Zoran, Čomor, Mirjana, Nedeljković, Jovan, "Surface Modification of Colloidal TiO2 Nanoparticles with Bidentate Benzene Derivatives" in Journal of Physical Chemistry. C, 113, no. 29 (2009):12645-12652,
https://doi.org/10.1021/jp9013338 . .

TY  - JOUR
AU  - Abazović, Nadica
AU  - Mirenghi, Luciana
AU  - Janković, Ivana A.
AU  - Bibić, Nataša M.
AU  - Šojić, Daniela V.
AU  - Abramović, Biljana F.
AU  - Čomor, Mirjana
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3705
AB  - Titanium dioxide nanopowders doped with different amounts of Fe ions were prepared by coprecipitation method. Obtained materials were characterized by structural (XRD), morphological (TEM and SEM), optical (UV/vis reflection and photoluminescence, and Raman), and analytical techniques (XPS and ICP-OES). XRD analysis revealed rutile crystalline phase for doped and undoped titanium dioxide obtained in the same manner. Diameter of the particles was 5-7 nm. The presence of iron ions was confirmed by XPS and ICP-OES. Doping process moved absorption threshold of TiO2 into visible spectrum range. Photocatalytic activity was also checked. Doped nanopowders showed normal and up-converted photoluminescence.
T2  - Nanoscale Research Letters
T1  - Synthesis and Characterization of Rutile TiO2 Nanopowders Doped with Iron Ions
VL  - 4
IS  - 6
SP  - 518
EP  - 525
DO  - 10.1007/s11671-009-9274-1
ER  - 

@article{
author = "Abazović, Nadica and Mirenghi, Luciana and Janković, Ivana A. and Bibić, Nataša M. and Šojić, Daniela V. and Abramović, Biljana F. and Čomor, Mirjana",
year = "2009",
abstract = "Titanium dioxide nanopowders doped with different amounts of Fe ions were prepared by coprecipitation method. Obtained materials were characterized by structural (XRD), morphological (TEM and SEM), optical (UV/vis reflection and photoluminescence, and Raman), and analytical techniques (XPS and ICP-OES). XRD analysis revealed rutile crystalline phase for doped and undoped titanium dioxide obtained in the same manner. Diameter of the particles was 5-7 nm. The presence of iron ions was confirmed by XPS and ICP-OES. Doping process moved absorption threshold of TiO2 into visible spectrum range. Photocatalytic activity was also checked. Doped nanopowders showed normal and up-converted photoluminescence.",
journal = "Nanoscale Research Letters",
title = "Synthesis and Characterization of Rutile TiO2 Nanopowders Doped with Iron Ions",
volume = "4",
number = "6",
pages = "518-525",
doi = "10.1007/s11671-009-9274-1"
}

Abazović, N., Mirenghi, L., Janković, I. A., Bibić, N. M., Šojić, D. V., Abramović, B. F.,& Čomor, M.. (2009). Synthesis and Characterization of Rutile TiO2 Nanopowders Doped with Iron Ions. in Nanoscale Research Letters, 4(6), 518-525.
https://doi.org/10.1007/s11671-009-9274-1

Abazović N, Mirenghi L, Janković IA, Bibić NM, Šojić DV, Abramović BF, Čomor M. Synthesis and Characterization of Rutile TiO2 Nanopowders Doped with Iron Ions. in Nanoscale Research Letters. 2009;4(6):518-525.
doi:10.1007/s11671-009-9274-1 .

Abazović, Nadica, Mirenghi, Luciana, Janković, Ivana A., Bibić, Nataša M., Šojić, Daniela V., Abramović, Biljana F., Čomor, Mirjana, "Synthesis and Characterization of Rutile TiO2 Nanopowders Doped with Iron Ions" in Nanoscale Research Letters, 4, no. 6 (2009):518-525,
https://doi.org/10.1007/s11671-009-9274-1 . .

TY  - JOUR
AU  - Abazović, Nadica
AU  - Montone, Amelia
AU  - Mirenghi, Luciana
AU  - Janković, Ivana A.
AU  - Čomor, Mirjana
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6726
AB  - In this study, nitrogen-doped titanium dioxide (TiO2) powders were synthesized in two ways: by heating of titanium hydroxide with urea and by direct hydrolysis of titanium tetraisopropoxicle (TTIP) with ammonium hydroxide. The samples were characterized by structural (XRD), analytical (XPS), optical (UV/Vis absorption/reflection and Raman spectroscopy) and morphological (SEM, TEM) techniques. The characterization suggested that the doped materials have anatase crystalline form without any detectable peaks that correspond to dopants. The absorption threshold of titanium dioxide was moved in the visible range of optical spectrum from 3.2 eV to 2.20 eV. Particle sizes of synthesized powders were obtained from XRD measurements and from TEM data ranging from 6-20 nm. XPS and Raman spectroscopy were used for detection of nitrogen in doped samples.
T2  - Journal of Nanoscience and Nanotechnology
T1  - TiO2 doped with nitrogen: Synthesis and characterization
VL  - 8
IS  - 2
SP  - 613
EP  - 618
DO  - 10.1166/jnn.2008.A226
ER  - 

@article{
author = "Abazović, Nadica and Montone, Amelia and Mirenghi, Luciana and Janković, Ivana A. and Čomor, Mirjana",
year = "2008",
abstract = "In this study, nitrogen-doped titanium dioxide (TiO2) powders were synthesized in two ways: by heating of titanium hydroxide with urea and by direct hydrolysis of titanium tetraisopropoxicle (TTIP) with ammonium hydroxide. The samples were characterized by structural (XRD), analytical (XPS), optical (UV/Vis absorption/reflection and Raman spectroscopy) and morphological (SEM, TEM) techniques. The characterization suggested that the doped materials have anatase crystalline form without any detectable peaks that correspond to dopants. The absorption threshold of titanium dioxide was moved in the visible range of optical spectrum from 3.2 eV to 2.20 eV. Particle sizes of synthesized powders were obtained from XRD measurements and from TEM data ranging from 6-20 nm. XPS and Raman spectroscopy were used for detection of nitrogen in doped samples.",
journal = "Journal of Nanoscience and Nanotechnology",
title = "TiO2 doped with nitrogen: Synthesis and characterization",
volume = "8",
number = "2",
pages = "613-618",
doi = "10.1166/jnn.2008.A226"
}

Abazović, N., Montone, A., Mirenghi, L., Janković, I. A.,& Čomor, M.. (2008). TiO2 doped with nitrogen: Synthesis and characterization. in Journal of Nanoscience and Nanotechnology, 8(2), 613-618.
https://doi.org/10.1166/jnn.2008.A226

Abazović N, Montone A, Mirenghi L, Janković IA, Čomor M. TiO2 doped with nitrogen: Synthesis and characterization. in Journal of Nanoscience and Nanotechnology. 2008;8(2):613-618.
doi:10.1166/jnn.2008.A226 .

Abazović, Nadica, Montone, Amelia, Mirenghi, Luciana, Janković, Ivana A., Čomor, Mirjana, "TiO2 doped with nitrogen: Synthesis and characterization" in Journal of Nanoscience and Nanotechnology, 8, no. 2 (2008):613-618,
https://doi.org/10.1166/jnn.2008.A226 . .

TY  - CONF
AU  - Janković, Ivana A.
AU  - Šaponjić, Zoran
AU  - Džunuzović, Enis S.
AU  - Nedeljković, Jovan
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9388
AB  - Surface modification of nanocrystalline TiO2 particles with catechol was found to result in a red shift of the semiconductor absorption compared to unmodified nanocrystallites. The undercoordinated defect sites at TiO2 surface are the source of novel enhanced and selective reactivity of the nanoparticle toward bidentate ligand binding. Catechol, an enediol ligand, have the optimal geometry for chelating surface Ti atoms, resulting in a five-membered ring coordination complex and restoration of six-coordinated octahedral geometry of surface Ti atoms.
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2008 : 9th international conference on fundamental and applied aspects of physical chemistry
T1  - Surface modification of TiO2 nanoparticles with catechol
VL  - 2
SP  - 509
EP  - 511
UR  - https://hdl.handle.net/21.15107/rcub_vinar_9388
ER  - 

@conference{
author = "Janković, Ivana A. and Šaponjić, Zoran and Džunuzović, Enis S. and Nedeljković, Jovan",
year = "2008",
abstract = "Surface modification of nanocrystalline TiO2 particles with catechol was found to result in a red shift of the semiconductor absorption compared to unmodified nanocrystallites. The undercoordinated defect sites at TiO2 surface are the source of novel enhanced and selective reactivity of the nanoparticle toward bidentate ligand binding. Catechol, an enediol ligand, have the optimal geometry for chelating surface Ti atoms, resulting in a five-membered ring coordination complex and restoration of six-coordinated octahedral geometry of surface Ti atoms.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2008 : 9th international conference on fundamental and applied aspects of physical chemistry",
title = "Surface modification of TiO2 nanoparticles with catechol",
volume = "2",
pages = "509-511",
url = "https://hdl.handle.net/21.15107/rcub_vinar_9388"
}

Janković, I. A., Šaponjić, Z., Džunuzović, E. S.,& Nedeljković, J.. (2008). Surface modification of TiO2 nanoparticles with catechol. in Physical chemistry 2008 : 9th international conference on fundamental and applied aspects of physical chemistry
Society of Physical Chemists of Serbia., 2, 509-511.
https://hdl.handle.net/21.15107/rcub_vinar_9388

Janković IA, Šaponjić Z, Džunuzović ES, Nedeljković J. Surface modification of TiO2 nanoparticles with catechol. in Physical chemistry 2008 : 9th international conference on fundamental and applied aspects of physical chemistry. 2008;2:509-511.
https://hdl.handle.net/21.15107/rcub_vinar_9388 .

Janković, Ivana A., Šaponjić, Zoran, Džunuzović, Enis S., Nedeljković, Jovan, "Surface modification of TiO2 nanoparticles with catechol" in Physical chemistry 2008 : 9th international conference on fundamental and applied aspects of physical chemistry, 2 (2008):509-511,
https://hdl.handle.net/21.15107/rcub_vinar_9388 .

TY  - CONF
AU  - Čudina, Olivera
AU  - Janković, Ivana A.
AU  - Brborić, Jasmina
AU  - Karljiković-Rajić, Katarina
AU  - Vladimirov, Sote
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9370
AB  - The interaction of valsartan (VAL), an angiotensin II receptor antagonist, with cationic surfactant cetyltrimethylammonium bromide (CTAB) was investigated. To quantify the degree of VAL/CTAB interactions, two constants were calculated by using mathematical models: micelle/water partition coefficient and drug/micelle binding constant.
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2008 : 9th international conference on fundamental and applied aspects of physical chemistry
T1  - Study of valsartan interaction with micelles as a model system for biomembrane
VL  - 1
SP  - 366
EP  - 368
UR  - https://hdl.handle.net/21.15107/rcub_vinar_9370
ER  - 

@conference{
author = "Čudina, Olivera and Janković, Ivana A. and Brborić, Jasmina and Karljiković-Rajić, Katarina and Vladimirov, Sote",
year = "2008",
abstract = "The interaction of valsartan (VAL), an angiotensin II receptor antagonist, with cationic surfactant cetyltrimethylammonium bromide (CTAB) was investigated. To quantify the degree of VAL/CTAB interactions, two constants were calculated by using mathematical models: micelle/water partition coefficient and drug/micelle binding constant.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2008 : 9th international conference on fundamental and applied aspects of physical chemistry",
title = "Study of valsartan interaction with micelles as a model system for biomembrane",
volume = "1",
pages = "366-368",
url = "https://hdl.handle.net/21.15107/rcub_vinar_9370"
}

Čudina, O., Janković, I. A., Brborić, J., Karljiković-Rajić, K.,& Vladimirov, S.. (2008). Study of valsartan interaction with micelles as a model system for biomembrane. in Physical chemistry 2008 : 9th international conference on fundamental and applied aspects of physical chemistry
Society of Physical Chemists of Serbia., 1, 366-368.
https://hdl.handle.net/21.15107/rcub_vinar_9370

Čudina O, Janković IA, Brborić J, Karljiković-Rajić K, Vladimirov S. Study of valsartan interaction with micelles as a model system for biomembrane. in Physical chemistry 2008 : 9th international conference on fundamental and applied aspects of physical chemistry. 2008;1:366-368.
https://hdl.handle.net/21.15107/rcub_vinar_9370 .

Čudina, Olivera, Janković, Ivana A., Brborić, Jasmina, Karljiković-Rajić, Katarina, Vladimirov, Sote, "Study of valsartan interaction with micelles as a model system for biomembrane" in Physical chemistry 2008 : 9th international conference on fundamental and applied aspects of physical chemistry, 1 (2008):366-368,
https://hdl.handle.net/21.15107/rcub_vinar_9370 .

TY  - JOUR
AU  - Ruvarac-Bugarčić, Ivanka A.
AU  - Janković, Ivana A.
AU  - Konstantinović, Zorica
AU  - Šaponjić, Zoran
AU  - Nedeljković, Jovan
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3495
AB  - Nanocrystalline TiO2 films were prepared on glass supports by the dip coating technique using colloidal solutions consisting of 45 angstrom TiO2 particles as a precursor in order to probe the feasibility of exploiting solid state photocatalytic reactions for efficient deposition of gold. The reduction of Au3+ ions was maintained by photoirradiation of unmodified TiO2 films with metal ions being attached directly to the surface of TiO2. Absorption spectrum as well as atomic force microscopy measurements revealed presence of gold grains in the nanosize regime. Conductivity of deposited gold was measured in the temperature range from 45 to 295 K.
T2  - Acta Chimica Slovenica
T1  - Photocatalytic deposition of gold on nanocrystalline TiO2 films
VL  - 55
IS  - 2
SP  - 268
EP  - 272
UR  - https://hdl.handle.net/21.15107/rcub_vinar_3495
ER  - 

@article{
author = "Ruvarac-Bugarčić, Ivanka A. and Janković, Ivana A. and Konstantinović, Zorica and Šaponjić, Zoran and Nedeljković, Jovan",
year = "2008",
abstract = "Nanocrystalline TiO2 films were prepared on glass supports by the dip coating technique using colloidal solutions consisting of 45 angstrom TiO2 particles as a precursor in order to probe the feasibility of exploiting solid state photocatalytic reactions for efficient deposition of gold. The reduction of Au3+ ions was maintained by photoirradiation of unmodified TiO2 films with metal ions being attached directly to the surface of TiO2. Absorption spectrum as well as atomic force microscopy measurements revealed presence of gold grains in the nanosize regime. Conductivity of deposited gold was measured in the temperature range from 45 to 295 K.",
journal = "Acta Chimica Slovenica",
title = "Photocatalytic deposition of gold on nanocrystalline TiO2 films",
volume = "55",
number = "2",
pages = "268-272",
url = "https://hdl.handle.net/21.15107/rcub_vinar_3495"
}

Ruvarac-Bugarčić, I. A., Janković, I. A., Konstantinović, Z., Šaponjić, Z.,& Nedeljković, J.. (2008). Photocatalytic deposition of gold on nanocrystalline TiO2 films. in Acta Chimica Slovenica, 55(2), 268-272.
https://hdl.handle.net/21.15107/rcub_vinar_3495

Ruvarac-Bugarčić IA, Janković IA, Konstantinović Z, Šaponjić Z, Nedeljković J. Photocatalytic deposition of gold on nanocrystalline TiO2 films. in Acta Chimica Slovenica. 2008;55(2):268-272.
https://hdl.handle.net/21.15107/rcub_vinar_3495 .

Ruvarac-Bugarčić, Ivanka A., Janković, Ivana A., Konstantinović, Zorica, Šaponjić, Zoran, Nedeljković, Jovan, "Photocatalytic deposition of gold on nanocrystalline TiO2 films" in Acta Chimica Slovenica, 55, no. 2 (2008):268-272,
https://hdl.handle.net/21.15107/rcub_vinar_3495 .