Milićević, Bojana R.

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Authority KeyName Variants
orcid::0000-0003-2870-2728
  • Milićević, Bojana R. (19)
Projects
Materials of Reduced Dimensions for Efficient Light Harvesting and Energy conversion Size-, shape- and structure- dependent properties of nanoparticles and nanocomposites
Development and Application of Methods and Materials for Monitoring New Organic Contaminants, Toxic Compounds and Heavy Metals Science and Technology Planning Project of Guangdong Province for Applied Science and Technology Research and Development [2016B090931007]
Science and Technology Planning Project of Guangdong Province for Applied Science and Technology Research and Development [2017B090917001] China Postdoctoral Science Foundation [2018M643304]
Estonian Research Council grant [PUT PRG111] European Regional Development Fund [TK141]
Government of Guangzhou city for international joint-project [201704030020] NanoTBTech - Nanoparticles-based 2D thermal bioimaging technologies
Dynamics of nonlinear physicochemical and biochemical systems with modeling and predicting of their behavior under nonequilibrium conditions Synthesis and characterization of novel functional polymers and polymeric nanocomposites
Joint Funds of the National Natural Science Foundation of China (NSFC) and Yunnan Province [U1702254] Key Research Foundation of the Higher Education Institutions of Henan Province [16A510008]
Ministry of Education, Science National Natural Science Foundation of China [11375278]
National Natural Science Foundation of China [51802359] National Natural Science Foundation of China [No. 21801254]
National Natural Science Foundation of China [No. 51802359] National Natural Science Foundation of China [No. U1702254]
National Natural Science Foundation of China (NSFC)-Guangdong Province [U1301242] National Natural Science Foundation of China (NSFC)-Guangdong Province [U1702254]
National Natural Science Foundation of China (NSFC)-Yunnan Province [U1301242] National Natural Science Foundation of China (NSFC)-Yunnan Province [U1702254]
National Recruitment Program of High-end Foreign Experts by Chongqing University of Posts and Telecommunications (CQUPT), P.R. China [GDT20185200479] National Recruitment Program of High-end Foreign Experts [GDT20185200479]
National Recruitment Program of High-end Foreign Experts [GDW20145200225] Natural Science Foundation of Guangdong Province [2016A030313305]
NSFC [21771195] Programme for the Foreign Experts [W2017011]

Author's Bibliography

The influence of gamma irradiation on the color change of wool, linen, silk, and cotton fabrics used in cultural heritage artifacts

Vujčić, Ivica; Mašić, Slobodan; Medić, Mina M.; Milićević, Bojana R.; Dramićanin, Miroslav

(2019)

TY  - JOUR
AU  - Vujčić, Ivica
AU  - Mašić, Slobodan
AU  - Medić, Mina M.
AU  - Milićević, Bojana R.
AU  - Dramićanin, Miroslav
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0969806X18307163
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8003
AB  - Fabrics made of wool, linen, silk, and cotton, which are used in the making of artifacts of cultural heritage, were divided into three groups. The first group wasn't dyed, the second group was dyed with natural dye (using sour cherry), and the third one was dyed with artificial aniline dye. For the conservation purposes, all samples were exposed at ambient temperature to gamma radiation doses, from 0.5 to 25 kGy, using a Co-60 irradiator. The influence of gamma irradiation treatment on the color changes was investigated. The obtained results revealed that the irradiation affects the color changes in all samples. All samples became more or less darker under the influence of gamma irradiation. This change in darkness is most pronounced in samples dyed with natural colors. Also, the highest differences in color change and darkness were observed in linen samples. © 2018 Elsevier Ltd
T2  - Radiation Physics and Chemistry
T1  - The influence of gamma irradiation on the color change of wool, linen, silk, and cotton fabrics used in cultural heritage artifacts
VL  - 156
SP  - 307
EP  - 313
DO  - 10.1016/j.radphyschem.2018.12.001
ER  - 
@article{
author = "Vujčić, Ivica and Mašić, Slobodan and Medić, Mina M. and Milićević, Bojana R. and Dramićanin, Miroslav",
year = "2019",
abstract = "Fabrics made of wool, linen, silk, and cotton, which are used in the making of artifacts of cultural heritage, were divided into three groups. The first group wasn't dyed, the second group was dyed with natural dye (using sour cherry), and the third one was dyed with artificial aniline dye. For the conservation purposes, all samples were exposed at ambient temperature to gamma radiation doses, from 0.5 to 25 kGy, using a Co-60 irradiator. The influence of gamma irradiation treatment on the color changes was investigated. The obtained results revealed that the irradiation affects the color changes in all samples. All samples became more or less darker under the influence of gamma irradiation. This change in darkness is most pronounced in samples dyed with natural colors. Also, the highest differences in color change and darkness were observed in linen samples. © 2018 Elsevier Ltd",
journal = "Radiation Physics and Chemistry",
title = "The influence of gamma irradiation on the color change of wool, linen, silk, and cotton fabrics used in cultural heritage artifacts",
volume = "156",
pages = "307-313",
doi = "10.1016/j.radphyschem.2018.12.001"
}
Vujčić, I., Mašić, S., Medić, M. M., Milićević, B. R.,& Dramićanin, M.. (2019). The influence of gamma irradiation on the color change of wool, linen, silk, and cotton fabrics used in cultural heritage artifacts. in Radiation Physics and Chemistry, 156, 307-313.
https://doi.org/10.1016/j.radphyschem.2018.12.001
Vujčić I, Mašić S, Medić MM, Milićević BR, Dramićanin M. The influence of gamma irradiation on the color change of wool, linen, silk, and cotton fabrics used in cultural heritage artifacts. in Radiation Physics and Chemistry. 2019;156:307-313.
doi:10.1016/j.radphyschem.2018.12.001 .
Vujčić, Ivica, Mašić, Slobodan, Medić, Mina M., Milićević, Bojana R., Dramićanin, Miroslav, "The influence of gamma irradiation on the color change of wool, linen, silk, and cotton fabrics used in cultural heritage artifacts" in Radiation Physics and Chemistry, 156 (2019):307-313,
https://doi.org/10.1016/j.radphyschem.2018.12.001 . .
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5
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3

Eu3+-Activated Sr3ZnTa2O9 single-component white light phosphors: emission intensity enhancement and color rendering improvement

Li, Xiaohui; Milićević, Bojana R.; Dramićanin, Miroslav; Jing, Xiping; Tang, Qiang; Shi, Jianxin; Wu, Mingmei

(2019)

TY  - JOUR
AU  - Li, Xiaohui
AU  - Milićević, Bojana R.
AU  - Dramićanin, Miroslav
AU  - Jing, Xiping
AU  - Tang, Qiang
AU  - Shi, Jianxin
AU  - Wu, Mingmei
PY  - 2019
UR  - http://xlink.rsc.org/?DOI=C9TC00159J
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8087
AB  - Single-component white light phosphors with a broad and full color spectrum are urgently required to overcome residual problems with commercial phosphors. In this paper, we describe how Eu3+, as the dopant of Sr3ZnTa2O9 (SZT), plays an important role in structural modulation (including structural order-disorder and intrinsic oxygen defects), as demonstrated by electronic structural calculations and systematic experiments. Furthermore, D-5(0) F-7(2) emission of Eu3+ provides the red component of the emission spectrum and increases the color rendering index of SZT:Eu3+ phosphors. Consequently, the resulting phosphor SZT:10%Eu3+ shows significantly enhanced emission intensity, and its broadband emission covers the entire visible region from 400 nm to 720 nm. A fabricated LED device using a near-ultraviolet 370 nm chip coated with a single-component, the SZT:10%Eu3+ phosphor, shows warm white emission with a high color rendering index (R-a = 82).
T2  - Journal of Materials Chemistry C
T1  - Eu3+-Activated Sr3ZnTa2O9 single-component white light phosphors: emission intensity enhancement and color rendering improvement
VL  - 7
IS  - 9
SP  - 2596
EP  - 2603
DO  - 10.1039/C9TC00159J
ER  - 
@article{
author = "Li, Xiaohui and Milićević, Bojana R. and Dramićanin, Miroslav and Jing, Xiping and Tang, Qiang and Shi, Jianxin and Wu, Mingmei",
year = "2019",
abstract = "Single-component white light phosphors with a broad and full color spectrum are urgently required to overcome residual problems with commercial phosphors. In this paper, we describe how Eu3+, as the dopant of Sr3ZnTa2O9 (SZT), plays an important role in structural modulation (including structural order-disorder and intrinsic oxygen defects), as demonstrated by electronic structural calculations and systematic experiments. Furthermore, D-5(0) F-7(2) emission of Eu3+ provides the red component of the emission spectrum and increases the color rendering index of SZT:Eu3+ phosphors. Consequently, the resulting phosphor SZT:10%Eu3+ shows significantly enhanced emission intensity, and its broadband emission covers the entire visible region from 400 nm to 720 nm. A fabricated LED device using a near-ultraviolet 370 nm chip coated with a single-component, the SZT:10%Eu3+ phosphor, shows warm white emission with a high color rendering index (R-a = 82).",
journal = "Journal of Materials Chemistry C",
title = "Eu3+-Activated Sr3ZnTa2O9 single-component white light phosphors: emission intensity enhancement and color rendering improvement",
volume = "7",
number = "9",
pages = "2596-2603",
doi = "10.1039/C9TC00159J"
}
Li, X., Milićević, B. R., Dramićanin, M., Jing, X., Tang, Q., Shi, J.,& Wu, M.. (2019). Eu3+-Activated Sr3ZnTa2O9 single-component white light phosphors: emission intensity enhancement and color rendering improvement. in Journal of Materials Chemistry C, 7(9), 2596-2603.
https://doi.org/10.1039/C9TC00159J
Li X, Milićević BR, Dramićanin M, Jing X, Tang Q, Shi J, Wu M. Eu3+-Activated Sr3ZnTa2O9 single-component white light phosphors: emission intensity enhancement and color rendering improvement. in Journal of Materials Chemistry C. 2019;7(9):2596-2603.
doi:10.1039/C9TC00159J .
Li, Xiaohui, Milićević, Bojana R., Dramićanin, Miroslav, Jing, Xiping, Tang, Qiang, Shi, Jianxin, Wu, Mingmei, "Eu3+-Activated Sr3ZnTa2O9 single-component white light phosphors: emission intensity enhancement and color rendering improvement" in Journal of Materials Chemistry C, 7, no. 9 (2019):2596-2603,
https://doi.org/10.1039/C9TC00159J . .
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36

Li2TiO3:Mn4+ Deep‐Red Phosphor for the Lifetime‐Based Luminescence Thermometry

Dramićanin, Miroslav; Milićević, Bojana R.; Đorđević, Vesna R.; Ristić, Zoran; Zhou, Jianbang; Milivojević, Dušan; Papan, Jelena; Brik, Mikhail G.; Ma, Chong‐Geng; Srivastava, Alok M; Wu, Mingmei

(2019)

TY  - JOUR
AU  - Dramićanin, Miroslav
AU  - Milićević, Bojana R.
AU  - Đorđević, Vesna R.
AU  - Ristić, Zoran
AU  - Zhou, Jianbang
AU  - Milivojević, Dušan
AU  - Papan, Jelena
AU  - Brik, Mikhail G.
AU  - Ma, Chong‐Geng
AU  - Srivastava, Alok M
AU  - Wu, Mingmei
PY  - 2019
UR  - https://onlinelibrary.wiley.com/doi/abs/10.1002/slct.201901590
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8360
AB  - Luminescence of monoclinic lithium metatitanate (Li2TiO3) powders activated with different quantities of Mn4+ is studied in detail. Its strong deep-red emission arising from the Mn4+ 2Eg → 4A2g spin forbidden transition is centered at around 688 nm and is suitable for luminescence thermometry. Structural and electron paramagnetic resonance analyses show that Mn4+ ions are equally distributed in two almost identical Ti4+ sites in which they are octahedrally coordinated by six oxygen ions. Calculations based on the exchange charge model of the crystal field provided values of Racah parameters (B=760 cm−1, C= 2993 cm−1), crystal-field splitting Dq= 2043 cm−1, and the nephelauxetic parameter β1=0.9775. The maximal quantum efficiency of 24.1% at room temperature is found for 0.126% Mn4+ concentration. Temperature quenching of emission occurs by a cross-over via 4T2 excited state of the Mn4+ ions with T1/2=262 K and is quite favorable for the application in the lifetime-based luminescence thermometry since relative changes in emission decay values are exceptionally-large (around 3.21% at room temperature). We derived theoretical expressions for the temperature dependence of the absolute and relative sensitivities and discuss the influence of host material properties on lifetime sensitivities. © 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
T2  - ChemistrySelect
T1  - Li2TiO3:Mn4+ Deep‐Red Phosphor for the Lifetime‐Based Luminescence Thermometry
VL  - 4
IS  - 24
SP  - 7067
EP  - 7075
DO  - 10.1002/slct.201901590
ER  - 
@article{
author = "Dramićanin, Miroslav and Milićević, Bojana R. and Đorđević, Vesna R. and Ristić, Zoran and Zhou, Jianbang and Milivojević, Dušan and Papan, Jelena and Brik, Mikhail G. and Ma, Chong‐Geng and Srivastava, Alok M and Wu, Mingmei",
year = "2019",
abstract = "Luminescence of monoclinic lithium metatitanate (Li2TiO3) powders activated with different quantities of Mn4+ is studied in detail. Its strong deep-red emission arising from the Mn4+ 2Eg → 4A2g spin forbidden transition is centered at around 688 nm and is suitable for luminescence thermometry. Structural and electron paramagnetic resonance analyses show that Mn4+ ions are equally distributed in two almost identical Ti4+ sites in which they are octahedrally coordinated by six oxygen ions. Calculations based on the exchange charge model of the crystal field provided values of Racah parameters (B=760 cm−1, C= 2993 cm−1), crystal-field splitting Dq= 2043 cm−1, and the nephelauxetic parameter β1=0.9775. The maximal quantum efficiency of 24.1% at room temperature is found for 0.126% Mn4+ concentration. Temperature quenching of emission occurs by a cross-over via 4T2 excited state of the Mn4+ ions with T1/2=262 K and is quite favorable for the application in the lifetime-based luminescence thermometry since relative changes in emission decay values are exceptionally-large (around 3.21% at room temperature). We derived theoretical expressions for the temperature dependence of the absolute and relative sensitivities and discuss the influence of host material properties on lifetime sensitivities. © 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim",
journal = "ChemistrySelect",
title = "Li2TiO3:Mn4+ Deep‐Red Phosphor for the Lifetime‐Based Luminescence Thermometry",
volume = "4",
number = "24",
pages = "7067-7075",
doi = "10.1002/slct.201901590"
}
Dramićanin, M., Milićević, B. R., Đorđević, V. R., Ristić, Z., Zhou, J., Milivojević, D., Papan, J., Brik, M. G., Ma, C., Srivastava, A. M.,& Wu, M.. (2019). Li2TiO3:Mn4+ Deep‐Red Phosphor for the Lifetime‐Based Luminescence Thermometry. in ChemistrySelect, 4(24), 7067-7075.
https://doi.org/10.1002/slct.201901590
Dramićanin M, Milićević BR, Đorđević VR, Ristić Z, Zhou J, Milivojević D, Papan J, Brik MG, Ma C, Srivastava AM, Wu M. Li2TiO3:Mn4+ Deep‐Red Phosphor for the Lifetime‐Based Luminescence Thermometry. in ChemistrySelect. 2019;4(24):7067-7075.
doi:10.1002/slct.201901590 .
Dramićanin, Miroslav, Milićević, Bojana R., Đorđević, Vesna R., Ristić, Zoran, Zhou, Jianbang, Milivojević, Dušan, Papan, Jelena, Brik, Mikhail G., Ma, Chong‐Geng, Srivastava, Alok M, Wu, Mingmei, "Li2TiO3:Mn4+ Deep‐Red Phosphor for the Lifetime‐Based Luminescence Thermometry" in ChemistrySelect, 4, no. 24 (2019):7067-7075,
https://doi.org/10.1002/slct.201901590 . .
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Li1.8Na0.2TiO3:Mn4+: The highly sensitive probe for the low-temperature lifetime-based luminescence thermometry

Sekulić, Milica; Ristić, Zoran; Milićević, Bojana R.; Antić, Željka; Đorđević, Vesna R.; Dramićanin, Miroslav

(2019)

TY  - JOUR
AU  - Sekulić, Milica
AU  - Ristić, Zoran
AU  - Milićević, Bojana R.
AU  - Antić, Željka
AU  - Đorđević, Vesna R.
AU  - Dramićanin, Miroslav
PY  - 2019
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8421
AB  - In this work, the potential of Li1.8Na0.2TiO3:Mn4+ for the lifetime-based luminescence thermometry is assessed. The material is prepared by the solid-state reaction of Li2CO3, Na2CO3, and nanostructured TiO2 at 800 °C, and its monoclinic structure (space group C2/c) is confirmed by X-ray diffraction analysis. In this host, Mn4+ provides strong absorption around 330 nm and 500 nm due to 4A2g → 4T1g and 4A2g→ 4T2g electric dipole forbidden and spin-allowed electron transitions, respectively, and emits around 679 nm on account of 2Eg→ 4A2g spin forbidden electron transition. Temperature dependences of emission intensity and emission decay are measured over the 10–350 K range. Due to the low value of energy of 4T2g level (20000 cm−1), the strong emission quenching starts at low-temperatures which favors the use of this material for the luminescence thermometry. It is demonstrated that the quite large value of relative sensitivity (2.27% K−1@330 K) facilitates temperature measurements with temperature resolution better than 0.15 K, and with the excellent repeatability. © 2019 Elsevier B.V.
T2  - Optics Communications
T1  - Li1.8Na0.2TiO3:Mn4+: The highly sensitive probe for the low-temperature lifetime-based luminescence thermometry
VL  - 452
SP  - 342
EP  - 346
DO  - 10.1016/j.optcom.2019.07.056
ER  - 
@article{
author = "Sekulić, Milica and Ristić, Zoran and Milićević, Bojana R. and Antić, Željka and Đorđević, Vesna R. and Dramićanin, Miroslav",
year = "2019",
abstract = "In this work, the potential of Li1.8Na0.2TiO3:Mn4+ for the lifetime-based luminescence thermometry is assessed. The material is prepared by the solid-state reaction of Li2CO3, Na2CO3, and nanostructured TiO2 at 800 °C, and its monoclinic structure (space group C2/c) is confirmed by X-ray diffraction analysis. In this host, Mn4+ provides strong absorption around 330 nm and 500 nm due to 4A2g → 4T1g and 4A2g→ 4T2g electric dipole forbidden and spin-allowed electron transitions, respectively, and emits around 679 nm on account of 2Eg→ 4A2g spin forbidden electron transition. Temperature dependences of emission intensity and emission decay are measured over the 10–350 K range. Due to the low value of energy of 4T2g level (20000 cm−1), the strong emission quenching starts at low-temperatures which favors the use of this material for the luminescence thermometry. It is demonstrated that the quite large value of relative sensitivity (2.27% K−1@330 K) facilitates temperature measurements with temperature resolution better than 0.15 K, and with the excellent repeatability. © 2019 Elsevier B.V.",
journal = "Optics Communications",
title = "Li1.8Na0.2TiO3:Mn4+: The highly sensitive probe for the low-temperature lifetime-based luminescence thermometry",
volume = "452",
pages = "342-346",
doi = "10.1016/j.optcom.2019.07.056"
}
Sekulić, M., Ristić, Z., Milićević, B. R., Antić, Ž., Đorđević, V. R.,& Dramićanin, M.. (2019). Li1.8Na0.2TiO3:Mn4+: The highly sensitive probe for the low-temperature lifetime-based luminescence thermometry. in Optics Communications, 452, 342-346.
https://doi.org/10.1016/j.optcom.2019.07.056
Sekulić M, Ristić Z, Milićević BR, Antić Ž, Đorđević VR, Dramićanin M. Li1.8Na0.2TiO3:Mn4+: The highly sensitive probe for the low-temperature lifetime-based luminescence thermometry. in Optics Communications. 2019;452:342-346.
doi:10.1016/j.optcom.2019.07.056 .
Sekulić, Milica, Ristić, Zoran, Milićević, Bojana R., Antić, Željka, Đorđević, Vesna R., Dramićanin, Miroslav, "Li1.8Na0.2TiO3:Mn4+: The highly sensitive probe for the low-temperature lifetime-based luminescence thermometry" in Optics Communications, 452 (2019):342-346,
https://doi.org/10.1016/j.optcom.2019.07.056 . .
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The enhancement of emission intensity and enlargement of color gamut by a simple local structure substitution with highly thermal stability preserved

Yan, Jing; Zhang, Ziwang; Milićević, Bojana R.; Li, Junhao; Liang, Qiongyun; Zhou, Jianbang; Wang, Yunfeng; Shi, Jianxin; Wu, Mingmei

(2019)

TY  - JOUR
AU  - Yan, Jing
AU  - Zhang, Ziwang
AU  - Milićević, Bojana R.
AU  - Li, Junhao
AU  - Liang, Qiongyun
AU  - Zhou, Jianbang
AU  - Wang, Yunfeng
AU  - Shi, Jianxin
AU  - Wu, Mingmei
PY  - 2019
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8346
AB  - The local crystal structure engineering becomes an important strategy to design new phosphors with enhanced optical and thermal performance of white light-emitting diodes. Herein, a series of Na3Sc2(PO4)3: Eu2+ and KyNa2.97-ySc2(PO4)3: 0.03Eu2+ phosphors were synthesized via traditional high temperature solid-state reaction method. X-ray powder diffraction analysis and Rietveld refinement provide insight in the detailed crystal structure. Furthermore, Eu2+ doped Na3Sc2(PO4)3 exhibits bright blue emission in 400–540 nm spectral range with a maximum value at ~ 460 nm under n-UV light excitation. The concentration quenching mechanism of Eu2+ in Na3Sc2(PO4)3 is certified to be a dipole-dipole interaction. Additionally, crystal structure tailoring is a potential strategy to design new phosphors for particular applications. Therefore, the effects of K+ substitution on the structure and photoluminescence of Eu2+ activated Na3Sc2(PO4)3 is presented in detail. Rietveld refinement data revealed that unit cell volume and Na/K–O band length increase when K+ occupy the Na+ sites. This sensitive local structure resulted in a considerable enhancement of the photoluminescence intensity of Eu2+. Incorporation of K+ in the crystal structure is a feasible route to realize fine-tuning of emission color and broaden the color gamut. In the meantime, Na2.7K0.27Sc2(PO4)3: 0.03Eu2+ phosphor exhibits excellent thermal stability at high temperature over a significant radiative recombination of energy transfer from traps to Eu2+. These results confirm that Na2.7K0.27Sc2(PO4)3: 0.03Eu2+ phosphor might be used as a blue component in n-UV chip activated white light-emitting diodes for the next-generation of indoor solid-state lighting applications. © 2019 Elsevier B.V.
T2  - Optical Materials
T1  - The enhancement of emission intensity and enlargement of color gamut by a simple local structure substitution with highly thermal stability preserved
VL  - 95
SP  - 109201
DO  - 10.1016/j.optmat.2019.109201
ER  - 
@article{
author = "Yan, Jing and Zhang, Ziwang and Milićević, Bojana R. and Li, Junhao and Liang, Qiongyun and Zhou, Jianbang and Wang, Yunfeng and Shi, Jianxin and Wu, Mingmei",
year = "2019",
abstract = "The local crystal structure engineering becomes an important strategy to design new phosphors with enhanced optical and thermal performance of white light-emitting diodes. Herein, a series of Na3Sc2(PO4)3: Eu2+ and KyNa2.97-ySc2(PO4)3: 0.03Eu2+ phosphors were synthesized via traditional high temperature solid-state reaction method. X-ray powder diffraction analysis and Rietveld refinement provide insight in the detailed crystal structure. Furthermore, Eu2+ doped Na3Sc2(PO4)3 exhibits bright blue emission in 400–540 nm spectral range with a maximum value at ~ 460 nm under n-UV light excitation. The concentration quenching mechanism of Eu2+ in Na3Sc2(PO4)3 is certified to be a dipole-dipole interaction. Additionally, crystal structure tailoring is a potential strategy to design new phosphors for particular applications. Therefore, the effects of K+ substitution on the structure and photoluminescence of Eu2+ activated Na3Sc2(PO4)3 is presented in detail. Rietveld refinement data revealed that unit cell volume and Na/K–O band length increase when K+ occupy the Na+ sites. This sensitive local structure resulted in a considerable enhancement of the photoluminescence intensity of Eu2+. Incorporation of K+ in the crystal structure is a feasible route to realize fine-tuning of emission color and broaden the color gamut. In the meantime, Na2.7K0.27Sc2(PO4)3: 0.03Eu2+ phosphor exhibits excellent thermal stability at high temperature over a significant radiative recombination of energy transfer from traps to Eu2+. These results confirm that Na2.7K0.27Sc2(PO4)3: 0.03Eu2+ phosphor might be used as a blue component in n-UV chip activated white light-emitting diodes for the next-generation of indoor solid-state lighting applications. © 2019 Elsevier B.V.",
journal = "Optical Materials",
title = "The enhancement of emission intensity and enlargement of color gamut by a simple local structure substitution with highly thermal stability preserved",
volume = "95",
pages = "109201",
doi = "10.1016/j.optmat.2019.109201"
}
Yan, J., Zhang, Z., Milićević, B. R., Li, J., Liang, Q., Zhou, J., Wang, Y., Shi, J.,& Wu, M.. (2019). The enhancement of emission intensity and enlargement of color gamut by a simple local structure substitution with highly thermal stability preserved. in Optical Materials, 95, 109201.
https://doi.org/10.1016/j.optmat.2019.109201
Yan J, Zhang Z, Milićević BR, Li J, Liang Q, Zhou J, Wang Y, Shi J, Wu M. The enhancement of emission intensity and enlargement of color gamut by a simple local structure substitution with highly thermal stability preserved. in Optical Materials. 2019;95:109201.
doi:10.1016/j.optmat.2019.109201 .
Yan, Jing, Zhang, Ziwang, Milićević, Bojana R., Li, Junhao, Liang, Qiongyun, Zhou, Jianbang, Wang, Yunfeng, Shi, Jianxin, Wu, Mingmei, "The enhancement of emission intensity and enlargement of color gamut by a simple local structure substitution with highly thermal stability preserved" in Optical Materials, 95 (2019):109201,
https://doi.org/10.1016/j.optmat.2019.109201 . .
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Visible light absorption of TiO2 nanoparticles surface-modified with vitamin B6: A comparative experimental and DFT study

Kovač, Tijana S.; Džunuzović, Enis S.; Džunuzović, Jasna V.; Milićević, Bojana R.; Sredojević, Dušan; Brothers, Edward N.; Nedeljković, Jovan

(2018)

TY  - JOUR
AU  - Kovač, Tijana S.
AU  - Džunuzović, Enis S.
AU  - Džunuzović, Jasna V.
AU  - Milićević, Bojana R.
AU  - Sredojević, Dušan
AU  - Brothers, Edward N.
AU  - Nedeljković, Jovan
PY  - 2018
UR  - http://www.doiserbia.nb.rs/Article.aspx?ID=0352-51391800044K
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7934
AB  - Surface modification of titanium dioxide nanoparticles (TiO2 NPs) with the biologically active molecule pyridoxine hydrochloride (vitamin B-6) was found to alter the optical properties. Microstructural characterization involving transmission electron microscopy (TEM) and X-ray diffraction (XRD) analysis revealed that the anatase TiO2 NPs had a narrow size distribution with an average diameter of 45 angstrom. The absorption onset of the surface-modified TiO2 samples was red-shifted by about 0.4 eV compared to the unmodified particles. The mode of binding between vitamin B-6 and the surface Ti atoms was investigated by Fourier transform infrared spectroscopy (FTIR). From the Benesi-Hildebrand plot, the stability constant of the surface complex was found to be of the order 10(2) M-1. The experimental findings were supported by detailed quantum chemical calculations based on the density functional theory (DFT). Agreement was found between the experimentally measured absorption spectra of the TiO2 NPs surface-modified with vitamin B-6 and the theoretically calculated electronic excitation spectra of the corresponding model system.
T2  - Journal of the Serbian Chemical Society
T1  - Visible light absorption of TiO2 nanoparticles surface-modified with vitamin B6: A comparative experimental and DFT study
VL  - 83
IS  - 7-8
SP  - 899
EP  - 909
DO  - 10.2298/JSC180131044K
ER  - 
@article{
author = "Kovač, Tijana S. and Džunuzović, Enis S. and Džunuzović, Jasna V. and Milićević, Bojana R. and Sredojević, Dušan and Brothers, Edward N. and Nedeljković, Jovan",
year = "2018",
abstract = "Surface modification of titanium dioxide nanoparticles (TiO2 NPs) with the biologically active molecule pyridoxine hydrochloride (vitamin B-6) was found to alter the optical properties. Microstructural characterization involving transmission electron microscopy (TEM) and X-ray diffraction (XRD) analysis revealed that the anatase TiO2 NPs had a narrow size distribution with an average diameter of 45 angstrom. The absorption onset of the surface-modified TiO2 samples was red-shifted by about 0.4 eV compared to the unmodified particles. The mode of binding between vitamin B-6 and the surface Ti atoms was investigated by Fourier transform infrared spectroscopy (FTIR). From the Benesi-Hildebrand plot, the stability constant of the surface complex was found to be of the order 10(2) M-1. The experimental findings were supported by detailed quantum chemical calculations based on the density functional theory (DFT). Agreement was found between the experimentally measured absorption spectra of the TiO2 NPs surface-modified with vitamin B-6 and the theoretically calculated electronic excitation spectra of the corresponding model system.",
journal = "Journal of the Serbian Chemical Society",
title = "Visible light absorption of TiO2 nanoparticles surface-modified with vitamin B6: A comparative experimental and DFT study",
volume = "83",
number = "7-8",
pages = "899-909",
doi = "10.2298/JSC180131044K"
}
Kovač, T. S., Džunuzović, E. S., Džunuzović, J. V., Milićević, B. R., Sredojević, D., Brothers, E. N.,& Nedeljković, J.. (2018). Visible light absorption of TiO2 nanoparticles surface-modified with vitamin B6: A comparative experimental and DFT study. in Journal of the Serbian Chemical Society, 83(7-8), 899-909.
https://doi.org/10.2298/JSC180131044K
Kovač TS, Džunuzović ES, Džunuzović JV, Milićević BR, Sredojević D, Brothers EN, Nedeljković J. Visible light absorption of TiO2 nanoparticles surface-modified with vitamin B6: A comparative experimental and DFT study. in Journal of the Serbian Chemical Society. 2018;83(7-8):899-909.
doi:10.2298/JSC180131044K .
Kovač, Tijana S., Džunuzović, Enis S., Džunuzović, Jasna V., Milićević, Bojana R., Sredojević, Dušan, Brothers, Edward N., Nedeljković, Jovan, "Visible light absorption of TiO2 nanoparticles surface-modified with vitamin B6: A comparative experimental and DFT study" in Journal of the Serbian Chemical Society, 83, no. 7-8 (2018):899-909,
https://doi.org/10.2298/JSC180131044K . .
2
2
2

Radiation effects on luminescent and structural properties of YPO4: Pr3+ nanophosphors

Vujčić, Ivica; Gavrilović, Tamara V.; Sekulić, Milica; Mašić, Slobodan; Milićević, Bojana R.; Dramićanin, Miroslav; Đorđević, Vesna R.

(2018)

TY  - JOUR
AU  - Vujčić, Ivica
AU  - Gavrilović, Tamara V.
AU  - Sekulić, Milica
AU  - Mašić, Slobodan
AU  - Milićević, Bojana R.
AU  - Dramićanin, Miroslav
AU  - Đorđević, Vesna R.
PY  - 2018
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85056079298&doi=10.1080%2F10420150.2018.1539722&partnerID=40&md5=a0ff2d1025484d944fc36f070a92bb13
UR  - https://www.tandfonline.com/doi/full/10.1080/10420150.2018.1539722
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7964
AB  - YPO4 phosphors doped with trivalent ion Pr3+ were prepared by sol–gel method and treated with different doses of gamma radiation, from 0.25 MGy to 4 MGy. Effects of radiation on morphology, structure and luminescent properties were analyzed. Also, the influence of radiation on the change in the color of the samples was examined. The color efficiency of powders was evaluated by colorimetric analysis (CIE and L * a * b system). It has been observed that powders change color under the influence of radiation, i.e. they pass from white to pinkish red. Also, it has been determined that the radiation affects morphology change, as the particle size increases with increasing of the radiation dose. With the increase in the radiation dose, the emission intensity of samples decreases. The structure remains almost unchanged after irradiation, and the intensity constantly decreases with increasing of dose. © 2018, © 2018 Informa UK Limited, trading as Taylor & Francis Group.
T2  - Radiation Effects and Defects in Solids
T1  - Radiation effects on luminescent and structural properties of YPO4: Pr3+ nanophosphors
VL  - 173
IS  - 11-12
SP  - 1054
EP  - 1067
DO  - 10.1080/10420150.2018.1539722
ER  - 
@article{
author = "Vujčić, Ivica and Gavrilović, Tamara V. and Sekulić, Milica and Mašić, Slobodan and Milićević, Bojana R. and Dramićanin, Miroslav and Đorđević, Vesna R.",
year = "2018",
abstract = "YPO4 phosphors doped with trivalent ion Pr3+ were prepared by sol–gel method and treated with different doses of gamma radiation, from 0.25 MGy to 4 MGy. Effects of radiation on morphology, structure and luminescent properties were analyzed. Also, the influence of radiation on the change in the color of the samples was examined. The color efficiency of powders was evaluated by colorimetric analysis (CIE and L * a * b system). It has been observed that powders change color under the influence of radiation, i.e. they pass from white to pinkish red. Also, it has been determined that the radiation affects morphology change, as the particle size increases with increasing of the radiation dose. With the increase in the radiation dose, the emission intensity of samples decreases. The structure remains almost unchanged after irradiation, and the intensity constantly decreases with increasing of dose. © 2018, © 2018 Informa UK Limited, trading as Taylor & Francis Group.",
journal = "Radiation Effects and Defects in Solids",
title = "Radiation effects on luminescent and structural properties of YPO4: Pr3+ nanophosphors",
volume = "173",
number = "11-12",
pages = "1054-1067",
doi = "10.1080/10420150.2018.1539722"
}
Vujčić, I., Gavrilović, T. V., Sekulić, M., Mašić, S., Milićević, B. R., Dramićanin, M.,& Đorđević, V. R.. (2018). Radiation effects on luminescent and structural properties of YPO4: Pr3+ nanophosphors. in Radiation Effects and Defects in Solids, 173(11-12), 1054-1067.
https://doi.org/10.1080/10420150.2018.1539722
Vujčić I, Gavrilović TV, Sekulić M, Mašić S, Milićević BR, Dramićanin M, Đorđević VR. Radiation effects on luminescent and structural properties of YPO4: Pr3+ nanophosphors. in Radiation Effects and Defects in Solids. 2018;173(11-12):1054-1067.
doi:10.1080/10420150.2018.1539722 .
Vujčić, Ivica, Gavrilović, Tamara V., Sekulić, Milica, Mašić, Slobodan, Milićević, Bojana R., Dramićanin, Miroslav, Đorđević, Vesna R., "Radiation effects on luminescent and structural properties of YPO4: Pr3+ nanophosphors" in Radiation Effects and Defects in Solids, 173, no. 11-12 (2018):1054-1067,
https://doi.org/10.1080/10420150.2018.1539722 . .

Discoloration of resin based composites in natural juices and energy drinks

Antonov, Milica; Lenhardt, Lea I.; Manojlović, Dragica; Milićević, Bojana R.; Dramićanin, Miroslav

(2018)

TY  - JOUR
AU  - Antonov, Milica
AU  - Lenhardt, Lea I.
AU  - Manojlović, Dragica
AU  - Milićević, Bojana R.
AU  - Dramićanin, Miroslav
PY  - 2018
UR  - http://www.doiserbia.nb.rs/Article.aspx?ID=0042-84501600394A
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7927
AB  - Background/Aim. Discoloration of dental restorations makes them aesthetically unacceptable and is a frequent reason for replacement of composite restorations. The aim of this study was to evaluate changes of color and fluorescence of resin-based composites (RBCs) exposed to natural juices and energy drinks. Methods. Microhybrid composite Gradia Direct™ Extra Bleach White disc-shaped specimens (n = 35) were immersed in three different natural juices and four different energy drinks. Absorption spectra of natural juices and energy drinks, diffuse reflection and fluorescence of composite samples were measured prior and after seven-day immersion by spectrophotometer Thermo Evolution 600 and spectrofluorometer Fluorolog-3-221. Composite’s color was calculated from diffuse reflection spectra and expressed in CIELAB color space (Commission International de l’Eclairage). Results. All natural juices and energy drinks induced color change of resin based composites, but to the different extent. Only aronia and carrot juices induced total color change considerably higher than clinically acceptable threshold, 9.3 and 6.2, respectively. All energy drinks and aronia juice induced notable decrease in fluorescence; the highest change of 28% was evidenced in the case of aronia juice. Conclusion. Change of color and fluorescence will appear differently with various solutions due to different chemical composition and concentration of colorant species in different beverages. Solutions with higher optical absorption induced higher total color change. Discoloration of composites in aronia and carrot juices is similar to those earlier reported for red wine, tea and coffee. © 2018, Inst. Sci. inf., Univ. Defence in Belgrade. All rights reserved.
T2  - Vojnosanitetski pregled
T1  - Discoloration of resin based composites in natural juices and energy drinks
T1  - Prebojavanje kompozita prirodnim sokovima i energetskim pićima
VL  - 75
IS  - 8
SP  - 787
EP  - 794
DO  - 10.2298/VSP161018394A
ER  - 
@article{
author = "Antonov, Milica and Lenhardt, Lea I. and Manojlović, Dragica and Milićević, Bojana R. and Dramićanin, Miroslav",
year = "2018",
abstract = "Background/Aim. Discoloration of dental restorations makes them aesthetically unacceptable and is a frequent reason for replacement of composite restorations. The aim of this study was to evaluate changes of color and fluorescence of resin-based composites (RBCs) exposed to natural juices and energy drinks. Methods. Microhybrid composite Gradia Direct™ Extra Bleach White disc-shaped specimens (n = 35) were immersed in three different natural juices and four different energy drinks. Absorption spectra of natural juices and energy drinks, diffuse reflection and fluorescence of composite samples were measured prior and after seven-day immersion by spectrophotometer Thermo Evolution 600 and spectrofluorometer Fluorolog-3-221. Composite’s color was calculated from diffuse reflection spectra and expressed in CIELAB color space (Commission International de l’Eclairage). Results. All natural juices and energy drinks induced color change of resin based composites, but to the different extent. Only aronia and carrot juices induced total color change considerably higher than clinically acceptable threshold, 9.3 and 6.2, respectively. All energy drinks and aronia juice induced notable decrease in fluorescence; the highest change of 28% was evidenced in the case of aronia juice. Conclusion. Change of color and fluorescence will appear differently with various solutions due to different chemical composition and concentration of colorant species in different beverages. Solutions with higher optical absorption induced higher total color change. Discoloration of composites in aronia and carrot juices is similar to those earlier reported for red wine, tea and coffee. © 2018, Inst. Sci. inf., Univ. Defence in Belgrade. All rights reserved.",
journal = "Vojnosanitetski pregled",
title = "Discoloration of resin based composites in natural juices and energy drinks, Prebojavanje kompozita prirodnim sokovima i energetskim pićima",
volume = "75",
number = "8",
pages = "787-794",
doi = "10.2298/VSP161018394A"
}
Antonov, M., Lenhardt, L. I., Manojlović, D., Milićević, B. R.,& Dramićanin, M.. (2018). Discoloration of resin based composites in natural juices and energy drinks. in Vojnosanitetski pregled, 75(8), 787-794.
https://doi.org/10.2298/VSP161018394A
Antonov M, Lenhardt LI, Manojlović D, Milićević BR, Dramićanin M. Discoloration of resin based composites in natural juices and energy drinks. in Vojnosanitetski pregled. 2018;75(8):787-794.
doi:10.2298/VSP161018394A .
Antonov, Milica, Lenhardt, Lea I., Manojlović, Dragica, Milićević, Bojana R., Dramićanin, Miroslav, "Discoloration of resin based composites in natural juices and energy drinks" in Vojnosanitetski pregled, 75, no. 8 (2018):787-794,
https://doi.org/10.2298/VSP161018394A . .

Charge-transfer complex formation between TiO2 nanoparticles and thiosalicylic acid: A comprehensive experimental and DFT study

Milićević, Bojana R.; Đorđević, Vesna R.; Lončarević, Davor; Dostanic, Jasmina M.; Ahrenkiel, Scott Phillip; Dramićanin, Miroslav; Sredojević, Dušan; Švrakić, Nenad M.; Nedeljković, Jovan

(2017)

TY  - JOUR
AU  - Milićević, Bojana R.
AU  - Đorđević, Vesna R.
AU  - Lončarević, Davor
AU  - Dostanic, Jasmina M.
AU  - Ahrenkiel, Scott Phillip
AU  - Dramićanin, Miroslav
AU  - Sredojević, Dušan
AU  - Švrakić, Nenad M.
AU  - Nedeljković, Jovan
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1815
AB  - Under normal conditions, titanium dioxide does not absorb visible light photons due to large band gap. Nevertheless, when titanium dioxide nanoparticles (TiO2 NPs) are surface-modified with thiosalicylic acid (TSA), their optical properties are altered owing to the formation of charge transfer complex that initiates absorption in the visible spectral range. Colloidal and sol-gel techniques were used to synthesize uniform TiO2 NPs of different sizes (average diameters in the range 4-15 nm), and effects of their subsequent modification by TSA molecules were compared with effect of modification of commercial Degussa TiO2 powder. Thorough microstructural characterization of TiO2 nanoparticulates was performed including transmission electron microscopy (TEM) and X-ray diffraction (XRD) analysis, as well as nitrogen adsorption-desorption isotherms. Optical measurements revealed that all surface-modified TiO2 samples with TSA have similar spectral features independent of their morphological differences, and, more importantly, absorption onset of modified TiO2 samples was found to be red-shifted by 1.0 eV compared to the unmodified ones. The mode of binding between TSA and surface Ti atoms was analyzed by infrared spectroscopy. Finally, the quantum chemical calculations, based on density functional theory, were performed to support optical characterization of surface-modified TiO2 with TSA. (C) 2017 Elsevier B.V. All rights reserved.
T2  - Optical Materials
T1  - Charge-transfer complex formation between TiO2 nanoparticles and thiosalicylic acid: A comprehensive experimental and DFT study
VL  - 73
SP  - 163
EP  - 171
DO  - 10.1016/j.optmat.2017.08.011
ER  - 
@article{
author = "Milićević, Bojana R. and Đorđević, Vesna R. and Lončarević, Davor and Dostanic, Jasmina M. and Ahrenkiel, Scott Phillip and Dramićanin, Miroslav and Sredojević, Dušan and Švrakić, Nenad M. and Nedeljković, Jovan",
year = "2017",
abstract = "Under normal conditions, titanium dioxide does not absorb visible light photons due to large band gap. Nevertheless, when titanium dioxide nanoparticles (TiO2 NPs) are surface-modified with thiosalicylic acid (TSA), their optical properties are altered owing to the formation of charge transfer complex that initiates absorption in the visible spectral range. Colloidal and sol-gel techniques were used to synthesize uniform TiO2 NPs of different sizes (average diameters in the range 4-15 nm), and effects of their subsequent modification by TSA molecules were compared with effect of modification of commercial Degussa TiO2 powder. Thorough microstructural characterization of TiO2 nanoparticulates was performed including transmission electron microscopy (TEM) and X-ray diffraction (XRD) analysis, as well as nitrogen adsorption-desorption isotherms. Optical measurements revealed that all surface-modified TiO2 samples with TSA have similar spectral features independent of their morphological differences, and, more importantly, absorption onset of modified TiO2 samples was found to be red-shifted by 1.0 eV compared to the unmodified ones. The mode of binding between TSA and surface Ti atoms was analyzed by infrared spectroscopy. Finally, the quantum chemical calculations, based on density functional theory, were performed to support optical characterization of surface-modified TiO2 with TSA. (C) 2017 Elsevier B.V. All rights reserved.",
journal = "Optical Materials",
title = "Charge-transfer complex formation between TiO2 nanoparticles and thiosalicylic acid: A comprehensive experimental and DFT study",
volume = "73",
pages = "163-171",
doi = "10.1016/j.optmat.2017.08.011"
}
Milićević, B. R., Đorđević, V. R., Lončarević, D., Dostanic, J. M., Ahrenkiel, S. P., Dramićanin, M., Sredojević, D., Švrakić, N. M.,& Nedeljković, J.. (2017). Charge-transfer complex formation between TiO2 nanoparticles and thiosalicylic acid: A comprehensive experimental and DFT study. in Optical Materials, 73, 163-171.
https://doi.org/10.1016/j.optmat.2017.08.011
Milićević BR, Đorđević VR, Lončarević D, Dostanic JM, Ahrenkiel SP, Dramićanin M, Sredojević D, Švrakić NM, Nedeljković J. Charge-transfer complex formation between TiO2 nanoparticles and thiosalicylic acid: A comprehensive experimental and DFT study. in Optical Materials. 2017;73:163-171.
doi:10.1016/j.optmat.2017.08.011 .
Milićević, Bojana R., Đorđević, Vesna R., Lončarević, Davor, Dostanic, Jasmina M., Ahrenkiel, Scott Phillip, Dramićanin, Miroslav, Sredojević, Dušan, Švrakić, Nenad M., Nedeljković, Jovan, "Charge-transfer complex formation between TiO2 nanoparticles and thiosalicylic acid: A comprehensive experimental and DFT study" in Optical Materials, 73 (2017):163-171,
https://doi.org/10.1016/j.optmat.2017.08.011 . .
6
7
8

Effects of Li+ co-doping on properties of Eu3+ activated TiO2 anatase nanoparticles

Milićević, Bojana R.; Đorđević, Vesna R.; Vuković, Katarina; Dražić, Goran; Dramićanin, Miroslav

(2017)

TY  - JOUR
AU  - Milićević, Bojana R.
AU  - Đorđević, Vesna R.
AU  - Vuković, Katarina
AU  - Dražić, Goran
AU  - Dramićanin, Miroslav
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1799
AB  - Sol-gel technique for the synthesis of anatase TiO2 at 420 degrees C produces nanocrystals of 10-20 nm in size with Ti4+ in crystal volume and Ti3+ at terminal planes of the crystal. The study of Li+ co-doping effects on the structure, morphology, absorption, and luminescence of Eu3+ activated TiO2 anatase nanocrystals is presented. Pure anatase structure is achieved up to 9 at.% Li, with significant improvement in crystallinity of europium doped anatase TiO2. The Li+ co-doping reduces the unit cell volume of the crystal, induces the blue shift of the absorption edge, lengthens the lifetime of Eu3+ D-5(0) excited state, and improves the Eu3+ emission intensity up to 37.5%. Judd-Ofelt analysis of Eu3+ emission showed enhancement of quantum efficiency from 66.4% to 98.7% when TiO2:Eu3+ was co-doped with 9 at.% of Li. (C) 2017 Elsevier B.V. All rights reserved.
T2  - Optical Materials
T1  - Effects of Li+ co-doping on properties of Eu3+ activated TiO2 anatase nanoparticles
VL  - 72
SP  - 316
EP  - 322
DO  - 10.1016/j.optmat.2017.06.029
ER  - 
@article{
author = "Milićević, Bojana R. and Đorđević, Vesna R. and Vuković, Katarina and Dražić, Goran and Dramićanin, Miroslav",
year = "2017",
abstract = "Sol-gel technique for the synthesis of anatase TiO2 at 420 degrees C produces nanocrystals of 10-20 nm in size with Ti4+ in crystal volume and Ti3+ at terminal planes of the crystal. The study of Li+ co-doping effects on the structure, morphology, absorption, and luminescence of Eu3+ activated TiO2 anatase nanocrystals is presented. Pure anatase structure is achieved up to 9 at.% Li, with significant improvement in crystallinity of europium doped anatase TiO2. The Li+ co-doping reduces the unit cell volume of the crystal, induces the blue shift of the absorption edge, lengthens the lifetime of Eu3+ D-5(0) excited state, and improves the Eu3+ emission intensity up to 37.5%. Judd-Ofelt analysis of Eu3+ emission showed enhancement of quantum efficiency from 66.4% to 98.7% when TiO2:Eu3+ was co-doped with 9 at.% of Li. (C) 2017 Elsevier B.V. All rights reserved.",
journal = "Optical Materials",
title = "Effects of Li+ co-doping on properties of Eu3+ activated TiO2 anatase nanoparticles",
volume = "72",
pages = "316-322",
doi = "10.1016/j.optmat.2017.06.029"
}
Milićević, B. R., Đorđević, V. R., Vuković, K., Dražić, G.,& Dramićanin, M.. (2017). Effects of Li+ co-doping on properties of Eu3+ activated TiO2 anatase nanoparticles. in Optical Materials, 72, 316-322.
https://doi.org/10.1016/j.optmat.2017.06.029
Milićević BR, Đorđević VR, Vuković K, Dražić G, Dramićanin M. Effects of Li+ co-doping on properties of Eu3+ activated TiO2 anatase nanoparticles. in Optical Materials. 2017;72:316-322.
doi:10.1016/j.optmat.2017.06.029 .
Milićević, Bojana R., Đorđević, Vesna R., Vuković, Katarina, Dražić, Goran, Dramićanin, Miroslav, "Effects of Li+ co-doping on properties of Eu3+ activated TiO2 anatase nanoparticles" in Optical Materials, 72 (2017):316-322,
https://doi.org/10.1016/j.optmat.2017.06.029 . .
10
8
10

Non-isothermal crystallization kinetics of the heavy-group lanthanide dititanates

Milićević, Bojana R.; Kuzman, Sanja; Porobić, Slavica; Marinović-Cincović, Milena; Dramićanin, Miroslav

(2017)

TY  - JOUR
AU  - Milićević, Bojana R.
AU  - Kuzman, Sanja
AU  - Porobić, Slavica
AU  - Marinović-Cincović, Milena
AU  - Dramićanin, Miroslav
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7198
AB  - The systematic investigation of crystallization kinetics of heavy-group lanthanide dititanate pyrochlores, HL2Ti2O7 (HL=Lu, Tm, Er, Ho, Y, Dy, and Tb) is presented. Materials are prepared by the Pechini-type polymerized complex route, and their thermal properties were studied by differential thermal analysis under non-isothermal conditions. For this group, the crystallization temperature became larger with increasing the ionic radius of lanthanides, from 1066 K for Lu2Ti2O7 to 1125 K for Tb2Ti2O7. The linear dependence of crystallization temperature on radius of heavy lanthanide ions is found to follows T-c [K] = 168.86 + 920.89 x r(ion) [angstrom] semi-empirical equation. Apparent activation energies of crystallization were obtained from calculations based on the Arrhenius equation, isoconversional method and PerezMaqueda method, and are similar to 805 kJ mol(-1) calculated by three different methods. The crystallization kinetics followed the so-called Avrami Erofeev (A3) model, as confirmed using several criteria, namely, the Malek, master plot, and Perez-Maqueda methods. The crystallization mechanism of all lanthanide dititanate pyrochlores is found to be the same, and the crystallization process involves a constant rate of nucleation and two-dimensional growth of nuclei. (C) 2017 Elsevier B.V. All rights reserved.
T2  - Optical Materials
T1  - Non-isothermal crystallization kinetics of the heavy-group lanthanide dititanates
VL  - 74
SP  - 86
EP  - 92
DO  - 10.1016/j.optmat.2017.03.058
ER  - 
@article{
author = "Milićević, Bojana R. and Kuzman, Sanja and Porobić, Slavica and Marinović-Cincović, Milena and Dramićanin, Miroslav",
year = "2017",
abstract = "The systematic investigation of crystallization kinetics of heavy-group lanthanide dititanate pyrochlores, HL2Ti2O7 (HL=Lu, Tm, Er, Ho, Y, Dy, and Tb) is presented. Materials are prepared by the Pechini-type polymerized complex route, and their thermal properties were studied by differential thermal analysis under non-isothermal conditions. For this group, the crystallization temperature became larger with increasing the ionic radius of lanthanides, from 1066 K for Lu2Ti2O7 to 1125 K for Tb2Ti2O7. The linear dependence of crystallization temperature on radius of heavy lanthanide ions is found to follows T-c [K] = 168.86 + 920.89 x r(ion) [angstrom] semi-empirical equation. Apparent activation energies of crystallization were obtained from calculations based on the Arrhenius equation, isoconversional method and PerezMaqueda method, and are similar to 805 kJ mol(-1) calculated by three different methods. The crystallization kinetics followed the so-called Avrami Erofeev (A3) model, as confirmed using several criteria, namely, the Malek, master plot, and Perez-Maqueda methods. The crystallization mechanism of all lanthanide dititanate pyrochlores is found to be the same, and the crystallization process involves a constant rate of nucleation and two-dimensional growth of nuclei. (C) 2017 Elsevier B.V. All rights reserved.",
journal = "Optical Materials",
title = "Non-isothermal crystallization kinetics of the heavy-group lanthanide dititanates",
volume = "74",
pages = "86-92",
doi = "10.1016/j.optmat.2017.03.058"
}
Milićević, B. R., Kuzman, S., Porobić, S., Marinović-Cincović, M.,& Dramićanin, M.. (2017). Non-isothermal crystallization kinetics of the heavy-group lanthanide dititanates. in Optical Materials, 74, 86-92.
https://doi.org/10.1016/j.optmat.2017.03.058
Milićević BR, Kuzman S, Porobić S, Marinović-Cincović M, Dramićanin M. Non-isothermal crystallization kinetics of the heavy-group lanthanide dititanates. in Optical Materials. 2017;74:86-92.
doi:10.1016/j.optmat.2017.03.058 .
Milićević, Bojana R., Kuzman, Sanja, Porobić, Slavica, Marinović-Cincović, Milena, Dramićanin, Miroslav, "Non-isothermal crystallization kinetics of the heavy-group lanthanide dititanates" in Optical Materials, 74 (2017):86-92,
https://doi.org/10.1016/j.optmat.2017.03.058 . .
3
3
3

Non-isothermal crystallization kinetics of Y(2)Ti(2)O7

Milićević, Bojana R.; Marinović-Cincović, Milena; Dramićanin, Miroslav

(2017)

TY  - JOUR
AU  - Milićević, Bojana R.
AU  - Marinović-Cincović, Milena
AU  - Dramićanin, Miroslav
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1439
AB  - The crystallization kinetics of Y2Ti2O7 powders prepared by a Pechini-type polymerized complex route was studied using differential thermal analysis under non-isothermal conditions. Apparent activation energies of crystallization of 816 and 804 kJ mol(-1) were obtained from calculations based on the Arrhenius equation and isoconversional analysis, respectively. The crystallization kinetics followed the so-called A3 model, as confirmed using several criteria, namely, the Malek, master plot, and Perez-Maqueda Methods. The measurement results and calculated crystallization parameters (n = 3, m = 2) showed that the crystallization process includes a constant rate of nucleation and two-dimensional growth of nuclei, and excluded the possibility of surface crystallization.
T2  - Powder Technology
T1  - Non-isothermal crystallization kinetics of Y(2)Ti(2)O7
VL  - 310
SP  - 67
EP  - 73
DO  - 10.1016/j.powtec.2017.01.001
ER  - 
@article{
author = "Milićević, Bojana R. and Marinović-Cincović, Milena and Dramićanin, Miroslav",
year = "2017",
abstract = "The crystallization kinetics of Y2Ti2O7 powders prepared by a Pechini-type polymerized complex route was studied using differential thermal analysis under non-isothermal conditions. Apparent activation energies of crystallization of 816 and 804 kJ mol(-1) were obtained from calculations based on the Arrhenius equation and isoconversional analysis, respectively. The crystallization kinetics followed the so-called A3 model, as confirmed using several criteria, namely, the Malek, master plot, and Perez-Maqueda Methods. The measurement results and calculated crystallization parameters (n = 3, m = 2) showed that the crystallization process includes a constant rate of nucleation and two-dimensional growth of nuclei, and excluded the possibility of surface crystallization.",
journal = "Powder Technology",
title = "Non-isothermal crystallization kinetics of Y(2)Ti(2)O7",
volume = "310",
pages = "67-73",
doi = "10.1016/j.powtec.2017.01.001"
}
Milićević, B. R., Marinović-Cincović, M.,& Dramićanin, M.. (2017). Non-isothermal crystallization kinetics of Y(2)Ti(2)O7. in Powder Technology, 310, 67-73.
https://doi.org/10.1016/j.powtec.2017.01.001
Milićević BR, Marinović-Cincović M, Dramićanin M. Non-isothermal crystallization kinetics of Y(2)Ti(2)O7. in Powder Technology. 2017;310:67-73.
doi:10.1016/j.powtec.2017.01.001 .
Milićević, Bojana R., Marinović-Cincović, Milena, Dramićanin, Miroslav, "Non-isothermal crystallization kinetics of Y(2)Ti(2)O7" in Powder Technology, 310 (2017):67-73,
https://doi.org/10.1016/j.powtec.2017.01.001 . .
7
7
7

Modifikacija strukturnih, morfoloških i optičkih svojstava anatas TiO2 nanočestica dopiranjem trovalentnim jonima retkih zemalja

Milićević, Bojana R.

(Универзитет у Београду, Факултет за физичку хемију, 2017)

TY  - THES
AU  - Milićević, Bojana R.
PY  - 2017
UR  - http://eteze.bg.ac.rs/application/showtheses?thesesId=5384
UR  - https://fedorabg.bg.ac.rs/fedora/get/o:16741/bdef:Content/download
UR  - http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=49501199
UR  - http://nardus.mpn.gov.rs/123456789/8915
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7327
AB  - U ovoj doktorskoj disertaciji prikazana je temeljna studija modifikovanja strukturnih, morfoloških i optičkih svojstava anatas TiO2 nanočestica dopiranjem trovalentnim jonima retkih zemalja: prazeodijuma, neodijuma, samarijuma, europijuma, disprozijuma, terbijuma, holmijuma, erbijuma i tulijuma, pri koncentraciji od 1 at.%. Pomenuti materijali sintetisani su sol-gel tehnikom i žareni na temperaturi od 420 ºC. Strukturna svojstva nedopiranog anatas TiO2 kao i TiO2 dopiranоg jonima retkih zemalja ispitivana su rendgenskom difrakcionom analizom. Utvrđeno je da se sol-gel sintezom dobijaju čiste anatasne kristalne strukture sa veličinom kristalita od svega nekoliko nanometara. Uticaj jona retkih zemalja u anatasnoj kristalnoj strukturi titan-dioksida ogleda se u značajnom porastu specifične površine čestica. Takođe, sintetisani su nanoprahovi TiO2 koloidnom tehnikom u cilju korelisanja različitih metoda sinteza sa strukturnim, morfološkim i optičkim svojstvima...
AB  - The primary aim of this thesis is to explain the modification of structure, morphology and optical properties of anatase TiO2 nanoparticles doped with trivalent rare-earth ions: praseodymium, neodymium, samarium, europium, terbium, dysprosium, holmium, erbium, and thulium, with the concentration of 1 at.%. These materials were synthesized by the sol-gel technique and further annealed at 420 °C. Structural properties of anatase TiO2 and TiO2 doped with trivalent rare-earth ions are studied by X-ray diffraction analysis. It was confirmed that pure anatase TiO2 with the crystallite size of only a few nanometers was obtained by sol-gel synthesis. The incorporation of rare earth ions in the anatase TiO2 is reflected in the significant increase of the specific surface area of TiO2 nanopowders doped with rare-earth ions in comparison with undoped TiO2. Also, the TiO2 nanopowders were synthesized by a colloid technique to correlate the different methods of synthesis with structural, morphological and optical properties...
PB  - Универзитет у Београду, Факултет за физичку хемију
T2  - Универзитет у Београду
T1  - Modifikacija strukturnih, morfoloških i optičkih svojstava anatas TiO2 nanočestica dopiranjem trovalentnim jonima retkih zemalja
ER  - 
@phdthesis{
author = "Milićević, Bojana R.",
year = "2017",
abstract = "U ovoj doktorskoj disertaciji prikazana je temeljna studija modifikovanja strukturnih, morfoloških i optičkih svojstava anatas TiO2 nanočestica dopiranjem trovalentnim jonima retkih zemalja: prazeodijuma, neodijuma, samarijuma, europijuma, disprozijuma, terbijuma, holmijuma, erbijuma i tulijuma, pri koncentraciji od 1 at.%. Pomenuti materijali sintetisani su sol-gel tehnikom i žareni na temperaturi od 420 ºC. Strukturna svojstva nedopiranog anatas TiO2 kao i TiO2 dopiranоg jonima retkih zemalja ispitivana su rendgenskom difrakcionom analizom. Utvrđeno je da se sol-gel sintezom dobijaju čiste anatasne kristalne strukture sa veličinom kristalita od svega nekoliko nanometara. Uticaj jona retkih zemalja u anatasnoj kristalnoj strukturi titan-dioksida ogleda se u značajnom porastu specifične površine čestica. Takođe, sintetisani su nanoprahovi TiO2 koloidnom tehnikom u cilju korelisanja različitih metoda sinteza sa strukturnim, morfološkim i optičkim svojstvima..., The primary aim of this thesis is to explain the modification of structure, morphology and optical properties of anatase TiO2 nanoparticles doped with trivalent rare-earth ions: praseodymium, neodymium, samarium, europium, terbium, dysprosium, holmium, erbium, and thulium, with the concentration of 1 at.%. These materials were synthesized by the sol-gel technique and further annealed at 420 °C. Structural properties of anatase TiO2 and TiO2 doped with trivalent rare-earth ions are studied by X-ray diffraction analysis. It was confirmed that pure anatase TiO2 with the crystallite size of only a few nanometers was obtained by sol-gel synthesis. The incorporation of rare earth ions in the anatase TiO2 is reflected in the significant increase of the specific surface area of TiO2 nanopowders doped with rare-earth ions in comparison with undoped TiO2. Also, the TiO2 nanopowders were synthesized by a colloid technique to correlate the different methods of synthesis with structural, morphological and optical properties...",
publisher = "Универзитет у Београду, Факултет за физичку хемију",
journal = "Универзитет у Београду",
title = "Modifikacija strukturnih, morfoloških i optičkih svojstava anatas TiO2 nanočestica dopiranjem trovalentnim jonima retkih zemalja"
}
Milićević, B. R.. (2017). Modifikacija strukturnih, morfoloških i optičkih svojstava anatas TiO2 nanočestica dopiranjem trovalentnim jonima retkih zemalja. in Универзитет у Београду
Универзитет у Београду, Факултет за физичку хемију..
Milićević BR. Modifikacija strukturnih, morfoloških i optičkih svojstava anatas TiO2 nanočestica dopiranjem trovalentnim jonima retkih zemalja. in Универзитет у Београду. 2017;..
Milićević, Bojana R., "Modifikacija strukturnih, morfoloških i optičkih svojstava anatas TiO2 nanočestica dopiranjem trovalentnim jonima retkih zemalja" in Универзитет у Београду (2017).

Characterization of cereal flours by fluorescence spectroscopy coupled with PARAFAC

Lenhardt, Lea I.; Zeković, Ivana Lj.; Dramićanin, Tatjana; Milićević, Bojana R.; Burojević, Jovana; Dramićanin, Miroslav

(2017)

TY  - JOUR
AU  - Lenhardt, Lea I.
AU  - Zeković, Ivana Lj.
AU  - Dramićanin, Tatjana
AU  - Milićević, Bojana R.
AU  - Burojević, Jovana
AU  - Dramićanin, Miroslav
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1535
AB  - This paper presents parallel factor analysis (PARAFAC) of fluorescence of cereal flours. Excitation emission matrices (EEMs) of different cereal flours (wheat, corn, rye, rice, oat, spelt, barley and buckwheat) were measured in a front-face configuration over the ultraviolet-visible spectral range. EEMs showed that flours strongly fluoresce in two spectral regions, where amino acids, tocopherols, pyridoxine and 4-aminobenzoic acid show intense emissions. 4-component PARAFAC was used to model flour fluorescence and to decompose EEMs into excitation and emission spectra of each component. PARAFAC also provided relative concentrations of these components. The largest differences between flours were found in the concentration levels of the first and third component. Finally, variations in concentrations of PARAFAC modelled components were analysed in relation to the botanical origin of flour samples. (C) 2017 Elsevier Ltd. All rights reserved.
T2  - Food Chemistry
T1  - Characterization of cereal flours by fluorescence spectroscopy coupled with PARAFAC
VL  - 229
SP  - 165
EP  - 171
DO  - 10.1016/j.foodchem.2017.02.070
ER  - 
@article{
author = "Lenhardt, Lea I. and Zeković, Ivana Lj. and Dramićanin, Tatjana and Milićević, Bojana R. and Burojević, Jovana and Dramićanin, Miroslav",
year = "2017",
abstract = "This paper presents parallel factor analysis (PARAFAC) of fluorescence of cereal flours. Excitation emission matrices (EEMs) of different cereal flours (wheat, corn, rye, rice, oat, spelt, barley and buckwheat) were measured in a front-face configuration over the ultraviolet-visible spectral range. EEMs showed that flours strongly fluoresce in two spectral regions, where amino acids, tocopherols, pyridoxine and 4-aminobenzoic acid show intense emissions. 4-component PARAFAC was used to model flour fluorescence and to decompose EEMs into excitation and emission spectra of each component. PARAFAC also provided relative concentrations of these components. The largest differences between flours were found in the concentration levels of the first and third component. Finally, variations in concentrations of PARAFAC modelled components were analysed in relation to the botanical origin of flour samples. (C) 2017 Elsevier Ltd. All rights reserved.",
journal = "Food Chemistry",
title = "Characterization of cereal flours by fluorescence spectroscopy coupled with PARAFAC",
volume = "229",
pages = "165-171",
doi = "10.1016/j.foodchem.2017.02.070"
}
Lenhardt, L. I., Zeković, I. Lj., Dramićanin, T., Milićević, B. R., Burojević, J.,& Dramićanin, M.. (2017). Characterization of cereal flours by fluorescence spectroscopy coupled with PARAFAC. in Food Chemistry, 229, 165-171.
https://doi.org/10.1016/j.foodchem.2017.02.070
Lenhardt LI, Zeković IL, Dramićanin T, Milićević BR, Burojević J, Dramićanin M. Characterization of cereal flours by fluorescence spectroscopy coupled with PARAFAC. in Food Chemistry. 2017;229:165-171.
doi:10.1016/j.foodchem.2017.02.070 .
Lenhardt, Lea I., Zeković, Ivana Lj., Dramićanin, Tatjana, Milićević, Bojana R., Burojević, Jovana, Dramićanin, Miroslav, "Characterization of cereal flours by fluorescence spectroscopy coupled with PARAFAC" in Food Chemistry, 229 (2017):165-171,
https://doi.org/10.1016/j.foodchem.2017.02.070 . .
1
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21

Changes of Color and Fluorescence of Resin Composites Immersed in Beer

Antonov, Milica; Lenhardt, Lea I.; Manojlović, Dragica; Milićević, Bojana R.; Zeković, Ivana Lj.; Dramićanin, Miroslav

(2016)

TY  - JOUR
AU  - Antonov, Milica
AU  - Lenhardt, Lea I.
AU  - Manojlović, Dragica
AU  - Milićević, Bojana R.
AU  - Zeković, Ivana Lj.
AU  - Dramićanin, Miroslav
PY  - 2016
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1281
AB  - ObjectiveThe aim of this study was to evaluate changes of color and fluorescence of resin based composite exposed to beer. Materials and Methods84 samples (13 mm in diameter and 1.5 mm thick) of microhybrid composite Gradia Direct(TM) extra bleach white were immersed in 5 different beers (dark and light) or distilled water. Color and fluorescence were measured prior and after 1-, 7-, and 14-day immersion by Spectrophotometer Thermo Evolution 600 and Fluorolog-3-221 spectrofluorometer. ResultsResin based composites changed color after immersion in beers of different types. Beers with higher optical absorption induced greater color changes. The fluorescence intensity of composites was decreased after immersion in beer, but the shape of fluorescence spectra was not changed. 14-day immersion in Bernard dark beer caused the greatest changes in optical properties of composite: E*=9.0 and 57.6% reduced fluorescence. ConclusionDark and light beers changed optical properties of resin based composite. The color change come exclusively from the change of chroma. Clinical SignificanceTo fully meet esthetic criteria when using dental materials in restoration it is crucial to match optical properties of teeth and dental restoration at the moment of placement, but also to keep the match over the time. Considering that staining in beer causes changes in color and fluorescence of composites and that discoloration is a frequent reason for replacement of composite restorations, the data and conclusions on discoloration of dental restorations caused by beer consumption should aid dental professionals when reaching for high esthetics of modern dentistry.(J Esthet Restor Dent 28:330-338, 2016)
T2  - Journal of Esthetic and Restorative Dentistry
T1  - Changes of Color and Fluorescence of Resin Composites Immersed in Beer
VL  - 28
IS  - 5
SP  - 330
EP  - 338
DO  - 10.1111/jerd.12232
ER  - 
@article{
author = "Antonov, Milica and Lenhardt, Lea I. and Manojlović, Dragica and Milićević, Bojana R. and Zeković, Ivana Lj. and Dramićanin, Miroslav",
year = "2016",
abstract = "ObjectiveThe aim of this study was to evaluate changes of color and fluorescence of resin based composite exposed to beer. Materials and Methods84 samples (13 mm in diameter and 1.5 mm thick) of microhybrid composite Gradia Direct(TM) extra bleach white were immersed in 5 different beers (dark and light) or distilled water. Color and fluorescence were measured prior and after 1-, 7-, and 14-day immersion by Spectrophotometer Thermo Evolution 600 and Fluorolog-3-221 spectrofluorometer. ResultsResin based composites changed color after immersion in beers of different types. Beers with higher optical absorption induced greater color changes. The fluorescence intensity of composites was decreased after immersion in beer, but the shape of fluorescence spectra was not changed. 14-day immersion in Bernard dark beer caused the greatest changes in optical properties of composite: E*=9.0 and 57.6% reduced fluorescence. ConclusionDark and light beers changed optical properties of resin based composite. The color change come exclusively from the change of chroma. Clinical SignificanceTo fully meet esthetic criteria when using dental materials in restoration it is crucial to match optical properties of teeth and dental restoration at the moment of placement, but also to keep the match over the time. Considering that staining in beer causes changes in color and fluorescence of composites and that discoloration is a frequent reason for replacement of composite restorations, the data and conclusions on discoloration of dental restorations caused by beer consumption should aid dental professionals when reaching for high esthetics of modern dentistry.(J Esthet Restor Dent 28:330-338, 2016)",
journal = "Journal of Esthetic and Restorative Dentistry",
title = "Changes of Color and Fluorescence of Resin Composites Immersed in Beer",
volume = "28",
number = "5",
pages = "330-338",
doi = "10.1111/jerd.12232"
}
Antonov, M., Lenhardt, L. I., Manojlović, D., Milićević, B. R., Zeković, I. Lj.,& Dramićanin, M.. (2016). Changes of Color and Fluorescence of Resin Composites Immersed in Beer. in Journal of Esthetic and Restorative Dentistry, 28(5), 330-338.
https://doi.org/10.1111/jerd.12232
Antonov M, Lenhardt LI, Manojlović D, Milićević BR, Zeković IL, Dramićanin M. Changes of Color and Fluorescence of Resin Composites Immersed in Beer. in Journal of Esthetic and Restorative Dentistry. 2016;28(5):330-338.
doi:10.1111/jerd.12232 .
Antonov, Milica, Lenhardt, Lea I., Manojlović, Dragica, Milićević, Bojana R., Zeković, Ivana Lj., Dramićanin, Miroslav, "Changes of Color and Fluorescence of Resin Composites Immersed in Beer" in Journal of Esthetic and Restorative Dentistry, 28, no. 5 (2016):330-338,
https://doi.org/10.1111/jerd.12232 . .
6
6
6

Evaluation of Staining-Dependent Colour Changes in Resin Composites Using Principal Component Analysis

Manojlović, Dragan D.; Lenhardt, Lea I.; Milićević, Bojana R.; Antonov, Milica; Miletic, V.; Dramićanin, Miroslav

(2015)

TY  - JOUR
AU  - Manojlović, Dragan D.
AU  - Lenhardt, Lea I.
AU  - Milićević, Bojana R.
AU  - Antonov, Milica
AU  - Miletic, V.
AU  - Dramićanin, Miroslav
PY  - 2015
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/763
AB  - Colour changes in Gradia Direct (TM) composite after immersion in tea, coffee, red wine, Coca-Cola, Colgate mouthwash, and distilled water were evaluated using principal component analysis (PCA) and the CIELAB colour coordinates. The reflection spectra of the composites were used as input data for the PCA. The output data (scores and loadings) provided information about the magnitude and origin of the surface reflection changes after exposure to the staining solutions. The reflection spectra of the stained samples generally exhibited lower reflection in the blue spectral range, which was manifested in the lower content of the blue shade for the samples. Both analyses demonstrated the high staining abilities of tea, coffee, and red wine, which produced total colour changes of 4.31, 6.61, and 6.22, respectively, according to the CIELAB analysis. PCA revealed subtle changes in the reflection spectra of composites immersed in Coca-Cola, demonstrating Coca-Colas ability to stain the composite to a small degree.
T2  - Scientific Reports
T1  - Evaluation of Staining-Dependent Colour Changes in Resin Composites Using Principal Component Analysis
VL  - 5
DO  - 10.1038/srep14638
ER  - 
@article{
author = "Manojlović, Dragan D. and Lenhardt, Lea I. and Milićević, Bojana R. and Antonov, Milica and Miletic, V. and Dramićanin, Miroslav",
year = "2015",
abstract = "Colour changes in Gradia Direct (TM) composite after immersion in tea, coffee, red wine, Coca-Cola, Colgate mouthwash, and distilled water were evaluated using principal component analysis (PCA) and the CIELAB colour coordinates. The reflection spectra of the composites were used as input data for the PCA. The output data (scores and loadings) provided information about the magnitude and origin of the surface reflection changes after exposure to the staining solutions. The reflection spectra of the stained samples generally exhibited lower reflection in the blue spectral range, which was manifested in the lower content of the blue shade for the samples. Both analyses demonstrated the high staining abilities of tea, coffee, and red wine, which produced total colour changes of 4.31, 6.61, and 6.22, respectively, according to the CIELAB analysis. PCA revealed subtle changes in the reflection spectra of composites immersed in Coca-Cola, demonstrating Coca-Colas ability to stain the composite to a small degree.",
journal = "Scientific Reports",
title = "Evaluation of Staining-Dependent Colour Changes in Resin Composites Using Principal Component Analysis",
volume = "5",
doi = "10.1038/srep14638"
}
Manojlović, D. D., Lenhardt, L. I., Milićević, B. R., Antonov, M., Miletic, V.,& Dramićanin, M.. (2015). Evaluation of Staining-Dependent Colour Changes in Resin Composites Using Principal Component Analysis. in Scientific Reports, 5.
https://doi.org/10.1038/srep14638
Manojlović DD, Lenhardt LI, Milićević BR, Antonov M, Miletic V, Dramićanin M. Evaluation of Staining-Dependent Colour Changes in Resin Composites Using Principal Component Analysis. in Scientific Reports. 2015;5.
doi:10.1038/srep14638 .
Manojlović, Dragan D., Lenhardt, Lea I., Milićević, Bojana R., Antonov, Milica, Miletic, V., Dramićanin, Miroslav, "Evaluation of Staining-Dependent Colour Changes in Resin Composites Using Principal Component Analysis" in Scientific Reports, 5 (2015),
https://doi.org/10.1038/srep14638 . .
2
15
14
12

Visible light absorption of surface modified TiO2 powders with bidentate benzene derivatives

Milićević, Bojana R.; Đorđević, Vesna R.; Lončarević, Davor; Ahrenkiel, Scott Phillip; Dramićanin, Miroslav; Nedeljković, Jovan

(2015)

TY  - JOUR
AU  - Milićević, Bojana R.
AU  - Đorđević, Vesna R.
AU  - Lončarević, Davor
AU  - Ahrenkiel, Scott Phillip
AU  - Dramićanin, Miroslav
AU  - Nedeljković, Jovan
PY  - 2015
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/719
AB  - TiO2 powders with different specific surface area were prepared using reproducible, sol gel synthetic route and their ability to form hybrids with catechol and 5-amino salicylic acid was compared with the commercially available Degussa P25 TiO2 powder. Microstructural characterization involving transmission electron microscopy, X-ray diffraction analysis and nitrogen adsorption-desorption isotherms indicated that TiO2 samples cover reasonably wide size and/or specific surface area range (50-115 m(2)/g). The surface modification of TiO2 powders with catechol and 5-amino salicylic acid induced significant shift of absorption to the visible spectral region due to charge transfer complex formation. It should be emphasized that tunable optical properties of TiO2 in powder form have never been reported in the literature. The largest red shift of the absorption onset was observed for sample with the largest specific surface area upon surface modification with both ligands. The binding of the modifier molecules to the surface Ti atoms was studied using Fourier transform infrared spectroscopy. (C) 2015 Elsevier Inc. All rights reserved.
T2  - Microporous and Mesoporous Materials
T1  - Visible light absorption of surface modified TiO2 powders with bidentate benzene derivatives
VL  - 217
SP  - 184
EP  - 189
DO  - 10.1016/j.micromeso.2015.06.028
ER  - 
@article{
author = "Milićević, Bojana R. and Đorđević, Vesna R. and Lončarević, Davor and Ahrenkiel, Scott Phillip and Dramićanin, Miroslav and Nedeljković, Jovan",
year = "2015",
abstract = "TiO2 powders with different specific surface area were prepared using reproducible, sol gel synthetic route and their ability to form hybrids with catechol and 5-amino salicylic acid was compared with the commercially available Degussa P25 TiO2 powder. Microstructural characterization involving transmission electron microscopy, X-ray diffraction analysis and nitrogen adsorption-desorption isotherms indicated that TiO2 samples cover reasonably wide size and/or specific surface area range (50-115 m(2)/g). The surface modification of TiO2 powders with catechol and 5-amino salicylic acid induced significant shift of absorption to the visible spectral region due to charge transfer complex formation. It should be emphasized that tunable optical properties of TiO2 in powder form have never been reported in the literature. The largest red shift of the absorption onset was observed for sample with the largest specific surface area upon surface modification with both ligands. The binding of the modifier molecules to the surface Ti atoms was studied using Fourier transform infrared spectroscopy. (C) 2015 Elsevier Inc. All rights reserved.",
journal = "Microporous and Mesoporous Materials",
title = "Visible light absorption of surface modified TiO2 powders with bidentate benzene derivatives",
volume = "217",
pages = "184-189",
doi = "10.1016/j.micromeso.2015.06.028"
}
Milićević, B. R., Đorđević, V. R., Lončarević, D., Ahrenkiel, S. P., Dramićanin, M.,& Nedeljković, J.. (2015). Visible light absorption of surface modified TiO2 powders with bidentate benzene derivatives. in Microporous and Mesoporous Materials, 217, 184-189.
https://doi.org/10.1016/j.micromeso.2015.06.028
Milićević BR, Đorđević VR, Lončarević D, Ahrenkiel SP, Dramićanin M, Nedeljković J. Visible light absorption of surface modified TiO2 powders with bidentate benzene derivatives. in Microporous and Mesoporous Materials. 2015;217:184-189.
doi:10.1016/j.micromeso.2015.06.028 .
Milićević, Bojana R., Đorđević, Vesna R., Lončarević, Davor, Ahrenkiel, Scott Phillip, Dramićanin, Miroslav, Nedeljković, Jovan, "Visible light absorption of surface modified TiO2 powders with bidentate benzene derivatives" in Microporous and Mesoporous Materials, 217 (2015):184-189,
https://doi.org/10.1016/j.micromeso.2015.06.028 . .
3
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30

Polycrystalline (Y0.7Gd0.3)(2)O-3:Eu3+ ceramics fabricated by Spark Plasma Sintering: Densification and microstructure development

Krsmanović, Radenka; Antić, Željka; Milićević, Bojana R.; Pošarac-Marković, Milica B.; Janaćković, Đorđe T.; Dramićanin, Miroslav; Brik, Mikhail G.; Steins, Ints; Veljović, Đorđe N.

(2014)

TY  - JOUR
AU  - Krsmanović, Radenka
AU  - Antić, Željka
AU  - Milićević, Bojana R.
AU  - Pošarac-Marković, Milica B.
AU  - Janaćković, Đorđe T.
AU  - Dramićanin, Miroslav
AU  - Brik, Mikhail G.
AU  - Steins, Ints
AU  - Veljović, Đorđe N.
PY  - 2014
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5972
AB  - Using Spark Plasma Sintering it is possible to produce polycrystalline ceramics of very fine microstructure and good mechanical properties. This work presents the fabrication of such ceramics using Eu3+-doped (Y0.7Gd0.3)(2)O-3 nanopowder as a starting material. We monitored the changes in the morphology of ceramic samples and their consolidation with additional thermal treatments at 650 degrees C and 1100 degrees C. The ceramics grain size remained in the sub-micron domain, even when elevated temperatures were used for annealing. The best results were obtained for the sample sintered at 1100 degrees C for 20 min, which had the smallest grain size, theoretical density, and the most intensive photoluminescence, along with the maximum hardness and appropriate fracture toughness. The Judd-Ofelt intensity parameters and branching ratios were calculated, taking into account the difference in the effective refractive index for the nanopowder and ceramic samples. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
T2  - Ceramics International
T1  - Polycrystalline (Y0.7Gd0.3)(2)O-3:Eu3+ ceramics fabricated by Spark Plasma Sintering: Densification and microstructure development
VL  - 40
IS  - 6
SP  - 8853
EP  - 8862
DO  - 10.1016/j.ceramint.2014.01.108
ER  - 
@article{
author = "Krsmanović, Radenka and Antić, Željka and Milićević, Bojana R. and Pošarac-Marković, Milica B. and Janaćković, Đorđe T. and Dramićanin, Miroslav and Brik, Mikhail G. and Steins, Ints and Veljović, Đorđe N.",
year = "2014",
abstract = "Using Spark Plasma Sintering it is possible to produce polycrystalline ceramics of very fine microstructure and good mechanical properties. This work presents the fabrication of such ceramics using Eu3+-doped (Y0.7Gd0.3)(2)O-3 nanopowder as a starting material. We monitored the changes in the morphology of ceramic samples and their consolidation with additional thermal treatments at 650 degrees C and 1100 degrees C. The ceramics grain size remained in the sub-micron domain, even when elevated temperatures were used for annealing. The best results were obtained for the sample sintered at 1100 degrees C for 20 min, which had the smallest grain size, theoretical density, and the most intensive photoluminescence, along with the maximum hardness and appropriate fracture toughness. The Judd-Ofelt intensity parameters and branching ratios were calculated, taking into account the difference in the effective refractive index for the nanopowder and ceramic samples. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.",
journal = "Ceramics International",
title = "Polycrystalline (Y0.7Gd0.3)(2)O-3:Eu3+ ceramics fabricated by Spark Plasma Sintering: Densification and microstructure development",
volume = "40",
number = "6",
pages = "8853-8862",
doi = "10.1016/j.ceramint.2014.01.108"
}
Krsmanović, R., Antić, Ž., Milićević, B. R., Pošarac-Marković, M. B., Janaćković, Đ. T., Dramićanin, M., Brik, M. G., Steins, I.,& Veljović, Đ. N.. (2014). Polycrystalline (Y0.7Gd0.3)(2)O-3:Eu3+ ceramics fabricated by Spark Plasma Sintering: Densification and microstructure development. in Ceramics International, 40(6), 8853-8862.
https://doi.org/10.1016/j.ceramint.2014.01.108
Krsmanović R, Antić Ž, Milićević BR, Pošarac-Marković MB, Janaćković ĐT, Dramićanin M, Brik MG, Steins I, Veljović ĐN. Polycrystalline (Y0.7Gd0.3)(2)O-3:Eu3+ ceramics fabricated by Spark Plasma Sintering: Densification and microstructure development. in Ceramics International. 2014;40(6):8853-8862.
doi:10.1016/j.ceramint.2014.01.108 .
Krsmanović, Radenka, Antić, Željka, Milićević, Bojana R., Pošarac-Marković, Milica B., Janaćković, Đorđe T., Dramićanin, Miroslav, Brik, Mikhail G., Steins, Ints, Veljović, Đorđe N., "Polycrystalline (Y0.7Gd0.3)(2)O-3:Eu3+ ceramics fabricated by Spark Plasma Sintering: Densification and microstructure development" in Ceramics International, 40, no. 6 (2014):8853-8862,
https://doi.org/10.1016/j.ceramint.2014.01.108 . .
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The comparative kinetic analysis of the non-isothermal crystallization process of Eu3+ doped Zn2SiO4 powders prepared via polymer induced sol-gel method

Marinović-Cincović, Milena; Janković, Bojan Ž.; Milićević, Bojana R.; Antić, Željka; Krsmanović, Radenka; Dramićanin, Miroslav

(2013)

TY  - JOUR
AU  - Marinović-Cincović, Milena
AU  - Janković, Bojan Ž.
AU  - Milićević, Bojana R.
AU  - Antić, Željka
AU  - Krsmanović, Radenka
AU  - Dramićanin, Miroslav
PY  - 2013
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5812
AB  - The comparative kinetic analysis of the non-isothermal crystallization was performed for Eu3+ doped Zn2SiO4 samples, prepared by the polymer induced sol-gel procedure and thermally treated in the conventional furnace and in a microwave oven. This comparison is done using various thermal analysis techniques and is supported by SEM investigation. It was found that low values of Avrami constant (n), identified in the primary crystallization stage resulted from a not constant radial growth rate. One possible mechanism that could alter the linear crystal growth rate is a diffusion-controlled transition, with instantaneous nucleation mechanism. In the secondary crystallization stage, observed for both samples, it was found that the probability for two-dimensional crystal growth increases, especially at higher heating rates. It was found that the substitution of zinc ions by europium ions in Zn2SiO4 matrix can lead to some defects due to different radius and charges, which induces autocatalytic behavior of the tested systems. It was shown that the two-parameter Sestak-Berggren (SB) autocatalytic model best describes the non-isothermal crystallization of doped samples. It has been shown that SB model is adequate to describe the crystallization kinetics for the fine powder samples (crystallite size of 60-65 nm). (C) 2013 Elsevier B.V. All rights reserved.
T2  - Powder Technology
T1  - The comparative kinetic analysis of the non-isothermal crystallization process of Eu3+ doped Zn2SiO4 powders prepared via polymer induced sol-gel method
VL  - 249
SP  - 497
EP  - 512
DO  - 10.1016/j.powtec.2013.09.020
ER  - 
@article{
author = "Marinović-Cincović, Milena and Janković, Bojan Ž. and Milićević, Bojana R. and Antić, Željka and Krsmanović, Radenka and Dramićanin, Miroslav",
year = "2013",
abstract = "The comparative kinetic analysis of the non-isothermal crystallization was performed for Eu3+ doped Zn2SiO4 samples, prepared by the polymer induced sol-gel procedure and thermally treated in the conventional furnace and in a microwave oven. This comparison is done using various thermal analysis techniques and is supported by SEM investigation. It was found that low values of Avrami constant (n), identified in the primary crystallization stage resulted from a not constant radial growth rate. One possible mechanism that could alter the linear crystal growth rate is a diffusion-controlled transition, with instantaneous nucleation mechanism. In the secondary crystallization stage, observed for both samples, it was found that the probability for two-dimensional crystal growth increases, especially at higher heating rates. It was found that the substitution of zinc ions by europium ions in Zn2SiO4 matrix can lead to some defects due to different radius and charges, which induces autocatalytic behavior of the tested systems. It was shown that the two-parameter Sestak-Berggren (SB) autocatalytic model best describes the non-isothermal crystallization of doped samples. It has been shown that SB model is adequate to describe the crystallization kinetics for the fine powder samples (crystallite size of 60-65 nm). (C) 2013 Elsevier B.V. All rights reserved.",
journal = "Powder Technology",
title = "The comparative kinetic analysis of the non-isothermal crystallization process of Eu3+ doped Zn2SiO4 powders prepared via polymer induced sol-gel method",
volume = "249",
pages = "497-512",
doi = "10.1016/j.powtec.2013.09.020"
}
Marinović-Cincović, M., Janković, B. Ž., Milićević, B. R., Antić, Ž., Krsmanović, R.,& Dramićanin, M.. (2013). The comparative kinetic analysis of the non-isothermal crystallization process of Eu3+ doped Zn2SiO4 powders prepared via polymer induced sol-gel method. in Powder Technology, 249, 497-512.
https://doi.org/10.1016/j.powtec.2013.09.020
Marinović-Cincović M, Janković BŽ, Milićević BR, Antić Ž, Krsmanović R, Dramićanin M. The comparative kinetic analysis of the non-isothermal crystallization process of Eu3+ doped Zn2SiO4 powders prepared via polymer induced sol-gel method. in Powder Technology. 2013;249:497-512.
doi:10.1016/j.powtec.2013.09.020 .
Marinović-Cincović, Milena, Janković, Bojan Ž., Milićević, Bojana R., Antić, Željka, Krsmanović, Radenka, Dramićanin, Miroslav, "The comparative kinetic analysis of the non-isothermal crystallization process of Eu3+ doped Zn2SiO4 powders prepared via polymer induced sol-gel method" in Powder Technology, 249 (2013):497-512,
https://doi.org/10.1016/j.powtec.2013.09.020 . .
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