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Rational design and synthesis of biologically active and coordination compounds and functional materials, relevant for (bio)nanotechnology

Link to this page

info:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172035/RS//

Rational design and synthesis of biologically active and coordination compounds and functional materials, relevant for (bio)nanotechnology (en)
Рационални дизајн и синтеза биолошки активних и координационих једињења и функционалних материјала, релевантних у (био)нанотехнологији (sr)
Racionalni dizajn i sinteza biološki aktivnih i koordinacionih jedinjenja i funkcionalnih materijala, relevantnih u (bio)nanotehnologiji (sr_RS)

Publications

Effects of different polymers and solvents on crystallization of theNaYF4:Yb/Er phase

Vuković, Marina; Dinić, Ivana; Nikolić, Marko G.; Marinković, Bojan A.; Costa, Antonio Mario Leal Martins; Radulović, Katarina; Milošević, Olivera; Mančić, Lidija

(Springer, 2020)

TY  - JOUR
AU  - Vuković, Marina
AU  - Dinić, Ivana
AU  - Nikolić, Marko G.
AU  - Marinković, Bojan A.
AU  - Costa, Antonio Mario Leal Martins
AU  - Radulović, Katarina
AU  - Milošević, Olivera
AU  - Mančić, Lidija
PY  - 2020
UR  - https://doi.org/10.1007/s12034-019-1975-1
UR  - http://dais.sanu.ac.rs/123456789/6912
AB  - Up-converting NaYF4:Yb,Er nanoparticles were obtained by polymer-assisted solvothermal synthesis using a common solution of hydrated RE nitrates in ethanol or ethylene glycol. It was shown that polymer choice (polyacrylic acid—PAA, polyvinylpyrrolidone—PVP and chitosan—CS) controls the size and shape of NaYF4:Yb,Er nanoparticles, while the solvent type and pH value affect their crystallinity. Consequently, the spherical nanoparticles of a cubic (α) phase, the average size of which ranged from 60 to 140 nm, were obtained either when PVP/ethanol or PVP/ethylene glycol were used solely during synthesis, whereas NaOH addition induced hexagonal (β) phase nucleation. The formation of the hierarchically organized spherical aggregates and nanofoils was observed when CS and PAA were used during synthesis, respectively. The average crystallite size, microstrain, doping level, lattice parameters, as well as, the presence of the certain ligands on the particle surface were determined and correlated with the intensity of visible-light emission observed under 980 nm laser-diode excitation.
PB  - Springer
T2  - Bulletin of Materials Science
T1  - Effects of different polymers and solvents on crystallization of theNaYF4:Yb/Er phase
SP  - 2
VL  - 43
IS  - 1
DO  - 10.1007/s12034-019-1975-1
ER  - 
@article{
author = "Vuković, Marina and Dinić, Ivana and Nikolić, Marko G. and Marinković, Bojan A. and Costa, Antonio Mario Leal Martins and Radulović, Katarina and Milošević, Olivera and Mančić, Lidija",
year = "2020",
url = "https://doi.org/10.1007/s12034-019-1975-1, http://dais.sanu.ac.rs/123456789/6912",
abstract = "Up-converting NaYF4:Yb,Er nanoparticles were obtained by polymer-assisted solvothermal synthesis using a common solution of hydrated RE nitrates in ethanol or ethylene glycol. It was shown that polymer choice (polyacrylic acid—PAA, polyvinylpyrrolidone—PVP and chitosan—CS) controls the size and shape of NaYF4:Yb,Er nanoparticles, while the solvent type and pH value affect their crystallinity. Consequently, the spherical nanoparticles of a cubic (α) phase, the average size of which ranged from 60 to 140 nm, were obtained either when PVP/ethanol or PVP/ethylene glycol were used solely during synthesis, whereas NaOH addition induced hexagonal (β) phase nucleation. The formation of the hierarchically organized spherical aggregates and nanofoils was observed when CS and PAA were used during synthesis, respectively. The average crystallite size, microstrain, doping level, lattice parameters, as well as, the presence of the certain ligands on the particle surface were determined and correlated with the intensity of visible-light emission observed under 980 nm laser-diode excitation.",
publisher = "Springer",
journal = "Bulletin of Materials Science",
title = "Effects of different polymers and solvents on crystallization of theNaYF4:Yb/Er phase",
pages = "2",
volume = "43",
number = "1",
doi = "10.1007/s12034-019-1975-1"
}
1

Effects of different polymers and solvents on crystallization of theNaYF4:Yb/Er phase

Vuković, Marina; Dinić, Ivana; Nikolić, Marko G.; Marinković, Bojan A.; Costa, Antonio Mario Leal Martins; Radulović, Katarina; Milošević, Olivera; Mančić, Lidija

(Springer, 2020)

TY  - JOUR
AU  - Vuković, Marina
AU  - Dinić, Ivana
AU  - Nikolić, Marko G.
AU  - Marinković, Bojan A.
AU  - Costa, Antonio Mario Leal Martins
AU  - Radulović, Katarina
AU  - Milošević, Olivera
AU  - Mančić, Lidija
PY  - 2020
UR  - https://doi.org/10.1007/s12034-019-1975-1
UR  - http://dais.sanu.ac.rs/123456789/6911
AB  - Up-converting NaYF4:Yb,Er nanoparticles were obtained by polymer-assisted solvothermal synthesis using a common solution of hydrated RE nitrates in ethanol or ethylene glycol. It was shown that polymer choice (polyacrylic acid—PAA, polyvinylpyrrolidone—PVP and chitosan—CS) controls the size and shape of NaYF4:Yb,Er nanoparticles, while the solvent type and pH value affect their crystallinity. Consequently, the spherical nanoparticles of a cubic (α) phase, the average size of which ranged from 60 to 140 nm, were obtained either when PVP/ethanol or PVP/ethylene glycol were used solely during synthesis, whereas NaOH addition induced hexagonal (β) phase nucleation. The formation of the hierarchically organized spherical aggregates and nanofoils was observed when CS and PAA were used during synthesis, respectively. The average crystallite size, microstrain, doping level, lattice parameters, as well as, the presence of the certain ligands on the particle surface were determined and correlated with the intensity of visible-light emission observed under 980 nm laser-diode excitation.
PB  - Springer
T2  - Bulletin of Materials Science
T1  - Effects of different polymers and solvents on crystallization of theNaYF4:Yb/Er phase
SP  - 2
VL  - 43
IS  - 1
DO  - 10.1007/s12034-019-1975-1
ER  - 
@article{
author = "Vuković, Marina and Dinić, Ivana and Nikolić, Marko G. and Marinković, Bojan A. and Costa, Antonio Mario Leal Martins and Radulović, Katarina and Milošević, Olivera and Mančić, Lidija",
year = "2020",
url = "https://doi.org/10.1007/s12034-019-1975-1, http://dais.sanu.ac.rs/123456789/6911",
abstract = "Up-converting NaYF4:Yb,Er nanoparticles were obtained by polymer-assisted solvothermal synthesis using a common solution of hydrated RE nitrates in ethanol or ethylene glycol. It was shown that polymer choice (polyacrylic acid—PAA, polyvinylpyrrolidone—PVP and chitosan—CS) controls the size and shape of NaYF4:Yb,Er nanoparticles, while the solvent type and pH value affect their crystallinity. Consequently, the spherical nanoparticles of a cubic (α) phase, the average size of which ranged from 60 to 140 nm, were obtained either when PVP/ethanol or PVP/ethylene glycol were used solely during synthesis, whereas NaOH addition induced hexagonal (β) phase nucleation. The formation of the hierarchically organized spherical aggregates and nanofoils was observed when CS and PAA were used during synthesis, respectively. The average crystallite size, microstrain, doping level, lattice parameters, as well as, the presence of the certain ligands on the particle surface were determined and correlated with the intensity of visible-light emission observed under 980 nm laser-diode excitation.",
publisher = "Springer",
journal = "Bulletin of Materials Science",
title = "Effects of different polymers and solvents on crystallization of theNaYF4:Yb/Er phase",
pages = "2",
volume = "43",
number = "1",
doi = "10.1007/s12034-019-1975-1"
}
1

Synthesis, characterization and in vitro evaluation of divalent ion release from stable NiFe2O4, ZnFe2O4 and core-shell ZnFe2O4@NiFe2O4 nanoparticles

Anđelković, Ljubica; Jeremić, Dejan; Milenković, Milica R.; Radosavljević, Jelena; Vulić, Predrag; Pavlović, Vladimir B.; Manojlović, Dragan D.; Nikolić, Aleksandar S.

(Elsevier, 2020)

TY  - JOUR
AU  - Anđelković, Ljubica
AU  - Jeremić, Dejan
AU  - Milenković, Milica R.
AU  - Radosavljević, Jelena
AU  - Vulić, Predrag
AU  - Pavlović, Vladimir B.
AU  - Manojlović, Dragan D.
AU  - Nikolić, Aleksandar S.
PY  - 2020
UR  - http://dais.sanu.ac.rs/123456789/6901
AB  - A simple organic-phase synthesis process was used to produce bare NiFe2O4 and ZnFe2O4 and core-shell ZnFe2O4@NiFe2O4 ferrite nanoparticles. X-ray powder diffractograms for all investigated powders show characteristic peaks of a spinel cubic structure without a secondary phase. Transmission electron microscopy (TEM) indicated the presence of nanoparticles that are smaller than 20 nm. The release of divalent ions (Ni2+ and Zn2+) from synthesized nanoparticles that were dispersed in saline solution, phosphate-buffered saline (PBS) and human serum, as determined by the inductively coupled plasma mass spectrometry (ICP-MS) method, was lower than 2 wt %. These results demonstrate the stability of the investigated nanoparticles in biologically relevant media and exclude the toxicity of Ni2+ and Zn2+ due to metal ion release, thereby opening a broad range of (bio)medical applications.
PB  - Elsevier
T2  - Ceramics International
T1  - Synthesis, characterization and in vitro evaluation of divalent ion release from stable NiFe2O4, ZnFe2O4 and core-shell ZnFe2O4@NiFe2O4 nanoparticles
SP  - 3528
EP  - 3533
VL  - 46
IS  - 3
DO  - 10.1016/j.ceramint.2019.10.068
ER  - 
@article{
author = "Anđelković, Ljubica and Jeremić, Dejan and Milenković, Milica R. and Radosavljević, Jelena and Vulić, Predrag and Pavlović, Vladimir B. and Manojlović, Dragan D. and Nikolić, Aleksandar S.",
year = "2020",
url = "http://dais.sanu.ac.rs/123456789/6901",
abstract = "A simple organic-phase synthesis process was used to produce bare NiFe2O4 and ZnFe2O4 and core-shell ZnFe2O4@NiFe2O4 ferrite nanoparticles. X-ray powder diffractograms for all investigated powders show characteristic peaks of a spinel cubic structure without a secondary phase. Transmission electron microscopy (TEM) indicated the presence of nanoparticles that are smaller than 20 nm. The release of divalent ions (Ni2+ and Zn2+) from synthesized nanoparticles that were dispersed in saline solution, phosphate-buffered saline (PBS) and human serum, as determined by the inductively coupled plasma mass spectrometry (ICP-MS) method, was lower than 2 wt %. These results demonstrate the stability of the investigated nanoparticles in biologically relevant media and exclude the toxicity of Ni2+ and Zn2+ due to metal ion release, thereby opening a broad range of (bio)medical applications.",
publisher = "Elsevier",
journal = "Ceramics International",
title = "Synthesis, characterization and in vitro evaluation of divalent ion release from stable NiFe2O4, ZnFe2O4 and core-shell ZnFe2O4@NiFe2O4 nanoparticles",
pages = "3528-3533",
volume = "46",
number = "3",
doi = "10.1016/j.ceramint.2019.10.068"
}
5
2
4

Morphological, structural, and functional properties of vertically aligned carbon nanotubes deposited on porous silicon layers by ultrasonic spray pyrolysis

Garzon-Roman, Abel; Milošević, Olivera; Rabanal, Maria Eugenia

(Elsevier, 2020)

TY  - JOUR
AU  - Garzon-Roman, Abel
AU  - Milošević, Olivera
AU  - Rabanal, Maria Eugenia
PY  - 2020
UR  - http://www.sciencedirect.com/science/article/pii/S1387181119305955
UR  - http://dais.sanu.ac.rs/123456789/6881
AB  - In this work, we reported the fabrication of hybrid structures by growing the multi-walled carbon nanotubes (MWCNT) on porous silicon (PS) as a template. Aligned multi-walled carbon nanotubes have been successfully synthesized on PS by ultrasonic spray pyrolysis (USP) using a solution of Toluene/Ferrocene as the precursor, while electrochemical anodization method was used to fabricate the PS layers. Au contact was deposited as a metallic contact on the MWCNT layer in order to measure the electrical properties and to analyze the electrical effect of the incorporation of MWCNT on PS. The structural and morphological characteristics of the hybrid structures were investigated by using Field Emission Scanning Electron Microscope (FE-SEM) showing that MWCNT formed a thin film on the PS surface in the form of an aligned array and perpendicular fiber-like structures to the porous surface. High-Resolution Transmission Electron Microscopy (HRTEM) images confirmed the diameter of the CNT between 10 and 30 nm and typically consisted of 10–20 concentric shells of carbon sheets. Raman Microscopy showed three characteristic bands and a high graphitization extent, even it was possible to observe that the carbon structures passivated the PS layer. Consequently, the photoluminescence (PL) spectrum of PS layers significantly was modified by MWCNT. Finally, electrical measurements provided a practical approach to describe how the materials behave under specific conditions that can be used for different applications in electronics or optoelectronics such as diodes or photodetectors. Significant differences were found under darkness, and illumination conditions of current-voltage (I–V) curves implied their possible application in optoelectronics. Moreover, symmetrical rectifying and Ohmic behavior was observed, which rarely has been reported in the literature, even it was possible to fit a transport mechanism, and the capacitance-voltage (C–V) curves presented an un-exponential behavior with interesting effects such as an increase of built-in voltage and negative capacitance. Based on the results obtained, the growth method for MWCNT structures was proposed.
PB  - Elsevier
T2  - Microporous and Mesoporous Materials
T1  - Morphological, structural, and functional properties of vertically aligned carbon nanotubes deposited on porous silicon layers by ultrasonic spray pyrolysis
SP  - 109738
VL  - 292
DO  - 10.1016/j.micromeso.2019.109738
ER  - 
@article{
author = "Garzon-Roman, Abel and Milošević, Olivera and Rabanal, Maria Eugenia",
year = "2020",
url = "http://www.sciencedirect.com/science/article/pii/S1387181119305955, http://dais.sanu.ac.rs/123456789/6881",
abstract = "In this work, we reported the fabrication of hybrid structures by growing the multi-walled carbon nanotubes (MWCNT) on porous silicon (PS) as a template. Aligned multi-walled carbon nanotubes have been successfully synthesized on PS by ultrasonic spray pyrolysis (USP) using a solution of Toluene/Ferrocene as the precursor, while electrochemical anodization method was used to fabricate the PS layers. Au contact was deposited as a metallic contact on the MWCNT layer in order to measure the electrical properties and to analyze the electrical effect of the incorporation of MWCNT on PS. The structural and morphological characteristics of the hybrid structures were investigated by using Field Emission Scanning Electron Microscope (FE-SEM) showing that MWCNT formed a thin film on the PS surface in the form of an aligned array and perpendicular fiber-like structures to the porous surface. High-Resolution Transmission Electron Microscopy (HRTEM) images confirmed the diameter of the CNT between 10 and 30 nm and typically consisted of 10–20 concentric shells of carbon sheets. Raman Microscopy showed three characteristic bands and a high graphitization extent, even it was possible to observe that the carbon structures passivated the PS layer. Consequently, the photoluminescence (PL) spectrum of PS layers significantly was modified by MWCNT. Finally, electrical measurements provided a practical approach to describe how the materials behave under specific conditions that can be used for different applications in electronics or optoelectronics such as diodes or photodetectors. Significant differences were found under darkness, and illumination conditions of current-voltage (I–V) curves implied their possible application in optoelectronics. Moreover, symmetrical rectifying and Ohmic behavior was observed, which rarely has been reported in the literature, even it was possible to fit a transport mechanism, and the capacitance-voltage (C–V) curves presented an un-exponential behavior with interesting effects such as an increase of built-in voltage and negative capacitance. Based on the results obtained, the growth method for MWCNT structures was proposed.",
publisher = "Elsevier",
journal = "Microporous and Mesoporous Materials",
title = "Morphological, structural, and functional properties of vertically aligned carbon nanotubes deposited on porous silicon layers by ultrasonic spray pyrolysis",
pages = "109738",
volume = "292",
doi = "10.1016/j.micromeso.2019.109738"
}
1
1
1

The gadolinium effect on crystallization behavior and luminescence of β-NaYF4:Yb,Er phase

Vuković, Marina; Mančić, Lidija; Dinić, Ivana; Vulić, Predrag; Nikolić, Marko G.; Tan, Zhenquan; Milošević, Olivera

(Wiley, 2020)

TY  - JOUR
AU  - Vuković, Marina
AU  - Mančić, Lidija
AU  - Dinić, Ivana
AU  - Vulić, Predrag
AU  - Nikolić, Marko G.
AU  - Tan, Zhenquan
AU  - Milošević, Olivera
PY  - 2020
UR  - https://ceramics.onlinelibrary.wiley.com/doi/abs/10.1111/ijac.13363
UR  - http://dais.sanu.ac.rs/123456789/6467
AB  - Single phase β-NaY0.8-xGdxYb0.18Er0.02F4 nanoparticles with different concentrations of gadolinium ions were prepared via PVP-assisted solvothermal treating at 200°C (PVP- polyvinylpyrrolidone). With the increase in Gd3+ concentration, size of the nanoparticles decreased. The up-converting spectra recorded upon 980 nm irradiation showed the green (510-560 nm) and red (640-690 nm) emissions, due to 2H11/2, 4S3/2 → 4I15/2 and 4F9/2 → 4I15/2 transitions, respectively. The strongest up-conversion luminescence was detected in 15 mol% Gd3+-doped nanoparticles obtained after 20 hours of solvothermal treating. With the rise of Gd3+ content up-conversion emission decreased due to increased defect concentration in the NaYF4 matrix. Fourier transform infrared spectroscopy proved in situ generation of hydrophilic nanoparticles as a result of PVP ligands retention at the particle surface.
PB  - Wiley
T2  - International Journal of Applied Ceramic Technology
T1  - The gadolinium effect on crystallization behavior and luminescence of β-NaYF4:Yb,Er phase
SP  - 1445
EP  - 1452
VL  - 17
IS  - 3
DO  - 10.1111/ijac.13363
ER  - 
@article{
author = "Vuković, Marina and Mančić, Lidija and Dinić, Ivana and Vulić, Predrag and Nikolić, Marko G. and Tan, Zhenquan and Milošević, Olivera",
year = "2020",
url = "https://ceramics.onlinelibrary.wiley.com/doi/abs/10.1111/ijac.13363, http://dais.sanu.ac.rs/123456789/6467",
abstract = "Single phase β-NaY0.8-xGdxYb0.18Er0.02F4 nanoparticles with different concentrations of gadolinium ions were prepared via PVP-assisted solvothermal treating at 200°C (PVP- polyvinylpyrrolidone). With the increase in Gd3+ concentration, size of the nanoparticles decreased. The up-converting spectra recorded upon 980 nm irradiation showed the green (510-560 nm) and red (640-690 nm) emissions, due to 2H11/2, 4S3/2 → 4I15/2 and 4F9/2 → 4I15/2 transitions, respectively. The strongest up-conversion luminescence was detected in 15 mol% Gd3+-doped nanoparticles obtained after 20 hours of solvothermal treating. With the rise of Gd3+ content up-conversion emission decreased due to increased defect concentration in the NaYF4 matrix. Fourier transform infrared spectroscopy proved in situ generation of hydrophilic nanoparticles as a result of PVP ligands retention at the particle surface.",
publisher = "Wiley",
journal = "International Journal of Applied Ceramic Technology",
title = "The gadolinium effect on crystallization behavior and luminescence of β-NaYF4:Yb,Er phase",
pages = "1445-1452",
volume = "17",
number = "3",
doi = "10.1111/ijac.13363"
}
1
1
1

The gadolinium effect on crystallization behavior and luminescence of β-NaYF4:Yb,Er phase

Vuković, Marina; Mančić, Lidija; Dinić, Ivana; Vulić, Predrag; Nikolić, Marko G.; Tan, Zhenquan; Milošević, Olivera

(Wiley, 2020)

TY  - JOUR
AU  - Vuković, Marina
AU  - Mančić, Lidija
AU  - Dinić, Ivana
AU  - Vulić, Predrag
AU  - Nikolić, Marko G.
AU  - Tan, Zhenquan
AU  - Milošević, Olivera
PY  - 2020
UR  - https://ceramics.onlinelibrary.wiley.com/doi/abs/10.1111/ijac.13363
UR  - http://dais.sanu.ac.rs/123456789/8947
AB  - Single phase β-NaY0.8-xGdxYb0.18Er0.02F4 nanoparticles with different concentrations of gadolinium ions were prepared via PVP-assisted solvothermal treating at 200°C (PVP- polyvinylpyrrolidone). With the increase in Gd3+ concentration, size of the nanoparticles decreased. The up-converting spectra recorded upon 980 nm irradiation showed the green (510-560 nm) and red (640-690 nm) emissions, due to 2H11/2, 4S3/2 → 4I15/2 and 4F9/2 → 4I15/2 transitions, respectively. The strongest up-conversion luminescence was detected in 15 mol% Gd3+-doped nanoparticles obtained after 20 hours of solvothermal treating. With the rise of Gd3+ content up-conversion emission decreased due to increased defect concentration in the NaYF4 matrix. Fourier transform infrared spectroscopy proved in situ generation of hydrophilic nanoparticles as a result of PVP ligands retention at the particle surface.
PB  - Wiley
T2  - International Journal of Applied Ceramic Technology
T1  - The gadolinium effect on crystallization behavior and luminescence of β-NaYF4:Yb,Er phase
SP  - 1445
EP  - 1452
VL  - 17
IS  - 3
DO  - 10.1111/ijac.13363
ER  - 
@article{
author = "Vuković, Marina and Mančić, Lidija and Dinić, Ivana and Vulić, Predrag and Nikolić, Marko G. and Tan, Zhenquan and Milošević, Olivera",
year = "2020",
url = "https://ceramics.onlinelibrary.wiley.com/doi/abs/10.1111/ijac.13363, http://dais.sanu.ac.rs/123456789/8947",
abstract = "Single phase β-NaY0.8-xGdxYb0.18Er0.02F4 nanoparticles with different concentrations of gadolinium ions were prepared via PVP-assisted solvothermal treating at 200°C (PVP- polyvinylpyrrolidone). With the increase in Gd3+ concentration, size of the nanoparticles decreased. The up-converting spectra recorded upon 980 nm irradiation showed the green (510-560 nm) and red (640-690 nm) emissions, due to 2H11/2, 4S3/2 → 4I15/2 and 4F9/2 → 4I15/2 transitions, respectively. The strongest up-conversion luminescence was detected in 15 mol% Gd3+-doped nanoparticles obtained after 20 hours of solvothermal treating. With the rise of Gd3+ content up-conversion emission decreased due to increased defect concentration in the NaYF4 matrix. Fourier transform infrared spectroscopy proved in situ generation of hydrophilic nanoparticles as a result of PVP ligands retention at the particle surface.",
publisher = "Wiley",
journal = "International Journal of Applied Ceramic Technology",
title = "The gadolinium effect on crystallization behavior and luminescence of β-NaYF4:Yb,Er phase",
pages = "1445-1452",
volume = "17",
number = "3",
doi = "10.1111/ijac.13363"
}
1
1
1

Influence of Gd3+ doping on the NaYF4 :YB3+,ER3+ structural and up-conversion properties

Vuković, Marina; Mančić, Lidija; Dinić, Ivana; Vulić, Predrag J.; Nikolić, Marko G.; Tan, Zhenquan; Milošević, Olivera

(Budapest : [s. n.], 2019)

TY  - CONF
AU  - Vuković, Marina
AU  - Mančić, Lidija
AU  - Dinić, Ivana
AU  - Vulić, Predrag J.
AU  - Nikolić, Marko G.
AU  - Tan, Zhenquan
AU  - Milošević, Olivera
PY  - 2019
UR  - http://dais.sanu.ac.rs/123456789/7000
AB  - application as lasers, displays, photo-thermal agents and biomarkers. Due to efficient two-phonon excitation and the large anti-Stocks shift UCNPs are able to emit visible or UV photons under excitation by near-infrared (NIR). Over the last decade, decomposition of organometallic compounds has been indicated as one of the most convenient method for the synthesis of monodisperse NaYF4:Yb3+,Er3+ UCNPs with a hexagonal crystal structure. Herein, NaY0.8-xGdxYb0.18Er0.02F4 (x= 0.3 or 0.15) up-conversion nanoparticles crystallized in the hexagonal space group P63/m were successfully synthesized solvothermally utilizing rare earth nitrates, NaF and polyvinylpyrrolidone (PVP) in ethanol-water mixture at 200 °C. Rietveld refinement of the X-ray powder diffraction (XRPD) data and high resolution transmission microscopy (HRTEM) analysis show that all UCNPs are monocrystalline (60-70 nm), have low defect concentration and uniform dopants distribution. Fourier-transform infrared (FTIR) spectroscopy indicate existence of the PVP ligands at the UCNPs surface, while photoluminescence (PL) spectra shows characteristic green (at 520 and 540 nm, due to 2H11/2, 4S3/2→4I15/2 transitions) and red (at 655 nm, due to 4F9/2 → 4I15/2 transition) emission lines under excitation by NIR (λ =980 nm) light.
PB  - Budapest : [s. n.]
C3  - Abstracts / International Workshop on Woman in Ceramic Science (WoCeram2019), April 7-9, 2019/ Budapest, Hungary, Novotel Danube Budapest
T1  - Influence of Gd3+ doping on the NaYF4 :YB3+,ER3+ structural and up-conversion properties
SP  - 19
EP  - 20
ER  - 
@conference{
author = "Vuković, Marina and Mančić, Lidija and Dinić, Ivana and Vulić, Predrag J. and Nikolić, Marko G. and Tan, Zhenquan and Milošević, Olivera",
year = "2019",
url = "http://dais.sanu.ac.rs/123456789/7000",
abstract = "application as lasers, displays, photo-thermal agents and biomarkers. Due to efficient two-phonon excitation and the large anti-Stocks shift UCNPs are able to emit visible or UV photons under excitation by near-infrared (NIR). Over the last decade, decomposition of organometallic compounds has been indicated as one of the most convenient method for the synthesis of monodisperse NaYF4:Yb3+,Er3+ UCNPs with a hexagonal crystal structure. Herein, NaY0.8-xGdxYb0.18Er0.02F4 (x= 0.3 or 0.15) up-conversion nanoparticles crystallized in the hexagonal space group P63/m were successfully synthesized solvothermally utilizing rare earth nitrates, NaF and polyvinylpyrrolidone (PVP) in ethanol-water mixture at 200 °C. Rietveld refinement of the X-ray powder diffraction (XRPD) data and high resolution transmission microscopy (HRTEM) analysis show that all UCNPs are monocrystalline (60-70 nm), have low defect concentration and uniform dopants distribution. Fourier-transform infrared (FTIR) spectroscopy indicate existence of the PVP ligands at the UCNPs surface, while photoluminescence (PL) spectra shows characteristic green (at 520 and 540 nm, due to 2H11/2, 4S3/2→4I15/2 transitions) and red (at 655 nm, due to 4F9/2 → 4I15/2 transition) emission lines under excitation by NIR (λ =980 nm) light.",
publisher = "Budapest : [s. n.]",
journal = "Abstracts / International Workshop on Woman in Ceramic Science (WoCeram2019), April 7-9, 2019/ Budapest, Hungary, Novotel Danube Budapest",
title = "Influence of Gd3+ doping on the NaYF4 :YB3+,ER3+ structural and up-conversion properties",
pages = "19-20"
}

Rare-earth (Gd 3+ ,Yb 3+ /Tm 3+ , Eu 3+ ) co-doped hydroxyapatite as magnetic, up-conversion and down-conversion materials for multimodal imaging

Ignjatović, Nenad; Mančić, Lidija; Vuković, Marina; Stojanović, Zoran; Nikolić, Marko G.; Škapin, Srečo Davor; Jovanović, Sonja; Veselinović, Ljiljana; Uskoković, Vuk; Lazić, Snežana; Marković, Smilja; Lazarević, Miloš M.; Uskoković, Dragan

(Springer Nature, 2019)

TY  - JOUR
AU  - Ignjatović, Nenad
AU  - Mančić, Lidija
AU  - Vuković, Marina
AU  - Stojanović, Zoran
AU  - Nikolić, Marko G.
AU  - Škapin, Srečo Davor
AU  - Jovanović, Sonja
AU  - Veselinović, Ljiljana
AU  - Uskoković, Vuk
AU  - Lazić, Snežana
AU  - Marković, Smilja
AU  - Lazarević, Miloš M.
AU  - Uskoković, Dragan
PY  - 2019
UR  - https://www.nature.com/articles/s41598-019-52885-0
UR  - http://dais.sanu.ac.rs/123456789/6950
AB  - Taking advantage of the flexibility of the apatite structure, nano- and micro-particles of hydroxyapatite (HAp) were doped with different combinations of rare earth ions (RE3+ = Gd, Eu, Yb, Tm) to achieve a synergy among their magnetic and optical properties and to enable their application in preventive medicine, particularly diagnostics based on multimodal imaging. All powders were synthesized through hydrothermal processing at T ≤ 200 °C. An X-ray powder diffraction analysis showed that all powders crystallized in P63/m space group of the hexagonal crystal structure. The refined unit-cell parameters reflected a decrease in the unit cell volume as a result of the partial substitution of Ca2+ with smaller RE3+ ions at both cation positions. The FTIR analysis additionally suggested that a synergy may exist solely in the triply doped system, where the lattice symmetry and vibration modes become more coherent than in the singly or doubly doped systems. HAp:RE3+ optical characterization revealed a change in the energy band gap and the appearance of a weak blue luminescence (λex = 370 nm) due to an increased concentration of defects. The “up”- and the “down”-conversion spectra of HAp:Gd/Yb/Tm and HAp:Gd/Eu powders showed characteristic transitions of Tm3+ and Eu3+, respectively. Furthermore, in contrast to diamagnetic HAp, all HAp:RE3+ powders exhibited paramagnetic behavior. Cell viability tests of HAp:Gd/Yb/Tm and HAp:Gd/Eu powders in human dental pulp stem cell cultures indicated their good biocompatibility.
PB  - Springer Nature
T2  - Scientific Reports
T1  - Rare-earth (Gd 3+ ,Yb 3+ /Tm 3+ , Eu 3+ ) co-doped hydroxyapatite as magnetic, up-conversion and down-conversion materials for multimodal imaging
SP  - 1
EP  - 15
VL  - 9
IS  - 1
DO  - 10.1038/s41598-019-52885-0
ER  - 
@article{
author = "Ignjatović, Nenad and Mančić, Lidija and Vuković, Marina and Stojanović, Zoran and Nikolić, Marko G. and Škapin, Srečo Davor and Jovanović, Sonja and Veselinović, Ljiljana and Uskoković, Vuk and Lazić, Snežana and Marković, Smilja and Lazarević, Miloš M. and Uskoković, Dragan",
year = "2019",
url = "https://www.nature.com/articles/s41598-019-52885-0, http://dais.sanu.ac.rs/123456789/6950",
abstract = "Taking advantage of the flexibility of the apatite structure, nano- and micro-particles of hydroxyapatite (HAp) were doped with different combinations of rare earth ions (RE3+ = Gd, Eu, Yb, Tm) to achieve a synergy among their magnetic and optical properties and to enable their application in preventive medicine, particularly diagnostics based on multimodal imaging. All powders were synthesized through hydrothermal processing at T ≤ 200 °C. An X-ray powder diffraction analysis showed that all powders crystallized in P63/m space group of the hexagonal crystal structure. The refined unit-cell parameters reflected a decrease in the unit cell volume as a result of the partial substitution of Ca2+ with smaller RE3+ ions at both cation positions. The FTIR analysis additionally suggested that a synergy may exist solely in the triply doped system, where the lattice symmetry and vibration modes become more coherent than in the singly or doubly doped systems. HAp:RE3+ optical characterization revealed a change in the energy band gap and the appearance of a weak blue luminescence (λex = 370 nm) due to an increased concentration of defects. The “up”- and the “down”-conversion spectra of HAp:Gd/Yb/Tm and HAp:Gd/Eu powders showed characteristic transitions of Tm3+ and Eu3+, respectively. Furthermore, in contrast to diamagnetic HAp, all HAp:RE3+ powders exhibited paramagnetic behavior. Cell viability tests of HAp:Gd/Yb/Tm and HAp:Gd/Eu powders in human dental pulp stem cell cultures indicated their good biocompatibility.",
publisher = "Springer Nature",
journal = "Scientific Reports",
title = "Rare-earth (Gd 3+ ,Yb 3+ /Tm 3+ , Eu 3+ ) co-doped hydroxyapatite as magnetic, up-conversion and down-conversion materials for multimodal imaging",
pages = "1-15",
volume = "9",
number = "1",
doi = "10.1038/s41598-019-52885-0"
}
1
13
9
14

Plasmon enhanced luminescence in hierarchically structured Ag@ (Y0.95Eu0.05)2O3 nanocomposites synthesized by ultrasonic spray pyrolysis

Alkan, Gözde; Mančić, Lidija; Tamura, Sayaka; Tomita, Koji; Tan, Zhenquan; Sun, Feifei; Rudolf, Rebeka; Ohara, Satoshi; Friedrich, Bernd; Milošević, Olivera

(Elsevier, 2019)

TY  - JOUR
AU  - Alkan, Gözde
AU  - Mančić, Lidija
AU  - Tamura, Sayaka
AU  - Tomita, Koji
AU  - Tan, Zhenquan
AU  - Sun, Feifei
AU  - Rudolf, Rebeka
AU  - Ohara, Satoshi
AU  - Friedrich, Bernd
AU  - Milošević, Olivera
PY  - 2019
UR  - http://www.sciencedirect.com/science/article/pii/S0921883119301141
UR  - http://dais.sanu.ac.rs/123456789/6264
AB  - Ag@ (Y0.95 Eu0.05)2O3 nanocomposites were synthesized by single step Ultrasonic Spray Pyrolysis (USP). 800 °C synthesis temperature and 1.5 l/ min air flow were determined as optimal USP parameters. A detailed parametric study was conducted on samples with varying silver contents and heat treatment conditions. The effect of silver in both as prepared and heat treated samples were elucidated in terms of structural and functional properties. Ag incorporation decreased luminescence efficiency due to the lack of crystallization of matrix and non-homogenous distribution of Eu and Ag in as prepared samples. Heat treatment improved luminescence by improved crystal quality for all samples; however, with increasing Ag content effect of heat treatment was more pronounced owing to uniform distribution of Ag. 2.5 wt% Ag addition followed by 2 h heat treatment after USP synthesis is suggested as the most efficient nanocomposite for red light emitting down converting phosphor applications.
PB  - Elsevier
T2  - Advanced Powder Technology
T1  - Plasmon enhanced luminescence in hierarchically structured Ag@ (Y0.95Eu0.05)2O3 nanocomposites synthesized by ultrasonic spray pyrolysis
SP  - 1409
EP  - 1418
VL  - 30
IS  - 7
DO  - 10.1016/j.apt.2019.04.024
ER  - 
@article{
author = "Alkan, Gözde and Mančić, Lidija and Tamura, Sayaka and Tomita, Koji and Tan, Zhenquan and Sun, Feifei and Rudolf, Rebeka and Ohara, Satoshi and Friedrich, Bernd and Milošević, Olivera",
year = "2019",
url = "http://www.sciencedirect.com/science/article/pii/S0921883119301141, http://dais.sanu.ac.rs/123456789/6264",
abstract = "Ag@ (Y0.95 Eu0.05)2O3 nanocomposites were synthesized by single step Ultrasonic Spray Pyrolysis (USP). 800 °C synthesis temperature and 1.5 l/ min air flow were determined as optimal USP parameters. A detailed parametric study was conducted on samples with varying silver contents and heat treatment conditions. The effect of silver in both as prepared and heat treated samples were elucidated in terms of structural and functional properties. Ag incorporation decreased luminescence efficiency due to the lack of crystallization of matrix and non-homogenous distribution of Eu and Ag in as prepared samples. Heat treatment improved luminescence by improved crystal quality for all samples; however, with increasing Ag content effect of heat treatment was more pronounced owing to uniform distribution of Ag. 2.5 wt% Ag addition followed by 2 h heat treatment after USP synthesis is suggested as the most efficient nanocomposite for red light emitting down converting phosphor applications.",
publisher = "Elsevier",
journal = "Advanced Powder Technology",
title = "Plasmon enhanced luminescence in hierarchically structured Ag@ (Y0.95Eu0.05)2O3 nanocomposites synthesized by ultrasonic spray pyrolysis",
pages = "1409-1418",
volume = "30",
number = "7",
doi = "10.1016/j.apt.2019.04.024"
}
4
4
4

NIR photo-driven upconversion in amino and carboxyl functionalized NaYF4:Yb,Er particles for in vitro cancer cell imaging

Mančić, Lidija

(London : Conference Series IIc, 2019)

TY  - CONF
AU  - Mančić, Lidija
PY  - 2019
UR  - http://dais.sanu.ac.rs/123456789/7046
AB  - Lanthanide-doped fluoride up-converting nanoparticles (UCNPs) represent the imaging contrast agents which hold great potential for overcoming existing problems associated with traditionally used dyes, proteins and quantum dots. Over the last decade, decomposition of organometallic compounds has been indicated as one of the most convenient method for the synthesis of monodisperse NaYF4:Yb/Er UCNPs. Still, their biological application is restricted due to the fact that such synthesis must be followed by Si02 encapsulation or ligands exchange to render them biocompatible. Herein, one-step polymer assisted solvothermal route is used for in situ synthesis of amino- or carboxyl- functionalized NaYF4:Yb,Er UCNPs that have hydrophilic surface capable for conjugation of biomolecules. Structural, morphological and optical properties of particles revealed nucleation of the cubic (Fm-3m) or hexagonal (P63/m) phases in spherical and elongated nanoparticles, respectively. UCNPs up-conversion efficiency was determined by measuring the intensity of blue (at 408 nm, due to 2H9/2→4I11/2 transition), green (at 520 and 540 nm, due to 2Hll/2, 4S3/2→4Il5/2 transitions) and red (at 655 nm, due to 4F9/2→4Il5/2 transition) emission after excitation by NIR (=980 nm) light and calculating (X,Y) CrE chromatic coordinates. UCNPs cytotoxicity and cell labeling capability was tested in vitro toward oral squamous cell carcinoma (OSCC), the most common malignant tumor of the head and neck, which early stages are asymptomatic and very similar to other mucosal diseases. Having in mind that great majority of investigations is focused on cancer cell testing, the potential cytotoxicity of UCNPs was additionally tested against human gingival cells (HGC) isolated from healthy gingival tissue. Low cytotoxicity against HGC and a dose dependent viability of OSCC indicates that these might be promising candidates for targeted therapy of cancer. A facile approach presented in this study may be extended to the synthesis of UCNPs with other biocompatible ligands raising at that way their use in biomedicine.
PB  - London : Conference Series IIc
C3  - 29th International Conference on Nanomaterials and Nanotechnology & 4th Edition of International Conference on Advanced Spectroscopy, Crystallography and Applications in Modern Chemistry, April 25-26, 2019 Rome, Italy
T1  - NIR photo-driven upconversion in amino and carboxyl functionalized NaYF4:Yb,Er particles for in vitro cancer cell imaging
SP  - 50
EP  - 50
ER  - 
@conference{
author = "Mančić, Lidija",
year = "2019",
url = "http://dais.sanu.ac.rs/123456789/7046",
abstract = "Lanthanide-doped fluoride up-converting nanoparticles (UCNPs) represent the imaging contrast agents which hold great potential for overcoming existing problems associated with traditionally used dyes, proteins and quantum dots. Over the last decade, decomposition of organometallic compounds has been indicated as one of the most convenient method for the synthesis of monodisperse NaYF4:Yb/Er UCNPs. Still, their biological application is restricted due to the fact that such synthesis must be followed by Si02 encapsulation or ligands exchange to render them biocompatible. Herein, one-step polymer assisted solvothermal route is used for in situ synthesis of amino- or carboxyl- functionalized NaYF4:Yb,Er UCNPs that have hydrophilic surface capable for conjugation of biomolecules. Structural, morphological and optical properties of particles revealed nucleation of the cubic (Fm-3m) or hexagonal (P63/m) phases in spherical and elongated nanoparticles, respectively. UCNPs up-conversion efficiency was determined by measuring the intensity of blue (at 408 nm, due to 2H9/2→4I11/2 transition), green (at 520 and 540 nm, due to 2Hll/2, 4S3/2→4Il5/2 transitions) and red (at 655 nm, due to 4F9/2→4Il5/2 transition) emission after excitation by NIR (=980 nm) light and calculating (X,Y) CrE chromatic coordinates. UCNPs cytotoxicity and cell labeling capability was tested in vitro toward oral squamous cell carcinoma (OSCC), the most common malignant tumor of the head and neck, which early stages are asymptomatic and very similar to other mucosal diseases. Having in mind that great majority of investigations is focused on cancer cell testing, the potential cytotoxicity of UCNPs was additionally tested against human gingival cells (HGC) isolated from healthy gingival tissue. Low cytotoxicity against HGC and a dose dependent viability of OSCC indicates that these might be promising candidates for targeted therapy of cancer. A facile approach presented in this study may be extended to the synthesis of UCNPs with other biocompatible ligands raising at that way their use in biomedicine.",
publisher = "London : Conference Series IIc",
journal = "29th International Conference on Nanomaterials and Nanotechnology & 4th Edition of International Conference on Advanced Spectroscopy, Crystallography and Applications in Modern Chemistry, April 25-26, 2019 Rome, Italy",
title = "NIR photo-driven upconversion in amino and carboxyl functionalized NaYF4:Yb,Er particles for in vitro cancer cell imaging",
pages = "50-50"
}

The usage of different fluoride sources during solvothermal synthesis of UCNPs in hydroxyl-carboxyl chelated precursor

Vuković, Marina; Dinić, Ivana; Mančić, Lidija; Vulić, Predrag J.; Nikolić, Marko G.; Milošević, Olivera

(Belgrade : Serbian Ceramic Society, 2019)

TY  - CONF
AU  - Vuković, Marina
AU  - Dinić, Ivana
AU  - Mančić, Lidija
AU  - Vulić, Predrag J.
AU  - Nikolić, Marko G.
AU  - Milošević, Olivera
PY  - 2019
UR  - http://dais.sanu.ac.rs/123456789/6978
AB  - There is a great interest for the synthesis of rare earth (RE) doped up-converting nanoparticles (UCNPs) which morphological and luminescence properties are well suited for application in optoelectronics, forensics, security and biomedicine. The synthesis of such particles usually comprises decomposition of organometallic compounds in an oxygen-free environment followed with coating of biocompatible layer or ligands exchange. In this work hydroxyl-carboxyl (HO-C) type of chelators (citric acid and sodium citrate) are used for the stabilization of NaYF4:Gd,Yb,Er UCNPs during solvothermal treatment of rare earth nitrate salts with different fluoride sources (NaF, NH4F and NH4HF2). The x-ray powder diffraction (XRPD) showed that all powders contain the mixture of cubic and hexagonal NaYF4:Gd,Yb,Er phase in nano and micro-sized particles respectively. However, the content of later one prevails in samples obtain when Nacitrate is used as chelator, regardless of which fluoride source is used for precipitation. Additionally, variation of the particles size and shape is detected with a variation of fluoride type. All particles have hydrophilic surface due to retention of citrate ligands and emit intense green light emission centered at 519 and 539 nm (2H11/2,4S3/2→4I15/2) when excited with near infrared light.
PB  - Belgrade : Serbian Ceramic Society
C3  - Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application VIII : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 23-25. September 2019
T1  - The usage of different fluoride sources during solvothermal synthesis of UCNPs in hydroxyl-carboxyl chelated precursor
SP  - 47
EP  - 47
ER  - 
@conference{
author = "Vuković, Marina and Dinić, Ivana and Mančić, Lidija and Vulić, Predrag J. and Nikolić, Marko G. and Milošević, Olivera",
year = "2019",
url = "http://dais.sanu.ac.rs/123456789/6978",
abstract = "There is a great interest for the synthesis of rare earth (RE) doped up-converting nanoparticles (UCNPs) which morphological and luminescence properties are well suited for application in optoelectronics, forensics, security and biomedicine. The synthesis of such particles usually comprises decomposition of organometallic compounds in an oxygen-free environment followed with coating of biocompatible layer or ligands exchange. In this work hydroxyl-carboxyl (HO-C) type of chelators (citric acid and sodium citrate) are used for the stabilization of NaYF4:Gd,Yb,Er UCNPs during solvothermal treatment of rare earth nitrate salts with different fluoride sources (NaF, NH4F and NH4HF2). The x-ray powder diffraction (XRPD) showed that all powders contain the mixture of cubic and hexagonal NaYF4:Gd,Yb,Er phase in nano and micro-sized particles respectively. However, the content of later one prevails in samples obtain when Nacitrate is used as chelator, regardless of which fluoride source is used for precipitation. Additionally, variation of the particles size and shape is detected with a variation of fluoride type. All particles have hydrophilic surface due to retention of citrate ligands and emit intense green light emission centered at 519 and 539 nm (2H11/2,4S3/2→4I15/2) when excited with near infrared light.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application VIII : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 23-25. September 2019",
title = "The usage of different fluoride sources during solvothermal synthesis of UCNPs in hydroxyl-carboxyl chelated precursor",
pages = "47-47"
}

Effect of Gd3+ introduction on YF3: Yb, Er structural, morphological and optical properties

Dinić, Ivana; Vuković, Marina; Vulić, Predrag; Nikolić, Marko G.; Milošević, Olivera; Mančić, Lidija

(Belgrade : Institute of Technical Sciences of SASA, 2019)

TY  - CONF
AU  - Dinić, Ivana
AU  - Vuković, Marina
AU  - Vulić, Predrag
AU  - Nikolić, Marko G.
AU  - Milošević, Olivera
AU  - Mančić, Lidija
PY  - 2019
UR  - http://dais.sanu.ac.rs/123456789/6970
AB  - Monosized up-converting nanoparticles (UCNPs) with a spherical shape and biocompatible surface have a wide application in biomedicine as new cell markers or light-triggered drug delivery agents. The synthesis of the hexagonal β-NaYF4:Yb/Er phase is of a great interest, because of its most efficient up-conversion luminescence. Beside it, synthesis of the UCNPs based on YF3:Yb/Er phase is also attractive due to its orthorhombic phase arrangement and fact that higher concentration of dopants could be introduced in such crystal lattice. In this work the synthesis of pure and Gd-doped YF3:Yb/Er phases were performed through hydro/solvo thermal method using a biocompatible chitosan as a surfactant. The XRD analysis showed that independently of the gadolinium content formation of the orthorhombic phase is achieved, but intensity of the green emission due to the (2H11/2, 4S3/2) → 4I15/2 electronic transitions was highest for un-doped YF3:Yb/Er sample.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - Program and the Book of abstracts / Eighteenth Young Researchers' Conference Materials Sciences and Engineering, December 4-6, 2019, Belgrade, Serbia
T1  - Effect of Gd3+ introduction on YF3: Yb, Er structural, morphological and optical properties
SP  - 33
EP  - 33
ER  - 
@conference{
author = "Dinić, Ivana and Vuković, Marina and Vulić, Predrag and Nikolić, Marko G. and Milošević, Olivera and Mančić, Lidija",
year = "2019",
url = "http://dais.sanu.ac.rs/123456789/6970",
abstract = "Monosized up-converting nanoparticles (UCNPs) with a spherical shape and biocompatible surface have a wide application in biomedicine as new cell markers or light-triggered drug delivery agents. The synthesis of the hexagonal β-NaYF4:Yb/Er phase is of a great interest, because of its most efficient up-conversion luminescence. Beside it, synthesis of the UCNPs based on YF3:Yb/Er phase is also attractive due to its orthorhombic phase arrangement and fact that higher concentration of dopants could be introduced in such crystal lattice. In this work the synthesis of pure and Gd-doped YF3:Yb/Er phases were performed through hydro/solvo thermal method using a biocompatible chitosan as a surfactant. The XRD analysis showed that independently of the gadolinium content formation of the orthorhombic phase is achieved, but intensity of the green emission due to the (2H11/2, 4S3/2) → 4I15/2 electronic transitions was highest for un-doped YF3:Yb/Er sample.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "Program and the Book of abstracts / Eighteenth Young Researchers' Conference Materials Sciences and Engineering, December 4-6, 2019, Belgrade, Serbia",
title = "Effect of Gd3+ introduction on YF3: Yb, Er structural, morphological and optical properties",
pages = "33-33"
}

Deep insight into the photoluminescent monocrystalline particles: Heat-treatment, structure, mechanisms and mechanics

Alkan, Gözde; HakanYavas; Göksel, Berfu; Mančić, Lidija; Friedrich, Bernd; Milošević, Olivera

(Elsevier, 2019)

TY  - JOUR
AU  - Alkan, Gözde
AU  - HakanYavas
AU  - Göksel, Berfu
AU  - Mančić, Lidija
AU  - Friedrich, Bernd
AU  - Milošević, Olivera
PY  - 2019
UR  - http://www.sciencedirect.com/science/article/pii/S2238785418306811
UR  - http://dais.sanu.ac.rs/123456789/6953
AB  - The red light emitting down-converting Ag@Y2O3:Eu3+ phosphor particles were synthesized by one-step ultrasonic spray pyrolysis and exposed further to the heat treatment at 1000°C (12h). A detailed investigation on structural and functional properties of the as-prepared and heat treated particles was conducted in a comparative manner. High-resolution transmission electron microscopy (HRTEM), X-ray powder diffraction (XRPD) and focus ion beam milling (FIB) revealed in a great consistency the poorly crystallized and porous nature of the as-prepared particles. Well-crystallized coarser primary nanocrystals of Y2O3:Eu3+and Ag, which are hierarchically organized in dense spherical Ag@Y2O3:Eu3+ phosphor particles, were obtained through the heat treatment. Along with the change of structural properties, down conversion (red luminescence at 612nm owing to the Eu3+5D0→7F2 electric dipole transition) and mechanical endurance were enhanced 4-fold and 5-fold via heat treatment, respectively. This comparative study implies a good correlation between mechanical and luminescence behavior of phosphors, both strongly influenced by the particles structural properties.
PB  - Elsevier
T2  - Journal of Materials Research and Technology
T1  - Deep insight into the photoluminescent monocrystalline particles: Heat-treatment, structure, mechanisms and mechanics
SP  - 2466
EP  - 2472
VL  - 8
IS  - 2
DO  - 10.1016/j.jmrt.2018.10.013
ER  - 
@article{
author = "Alkan, Gözde and HakanYavas and Göksel, Berfu and Mančić, Lidija and Friedrich, Bernd and Milošević, Olivera",
year = "2019",
url = "http://www.sciencedirect.com/science/article/pii/S2238785418306811, http://dais.sanu.ac.rs/123456789/6953",
abstract = "The red light emitting down-converting Ag@Y2O3:Eu3+ phosphor particles were synthesized by one-step ultrasonic spray pyrolysis and exposed further to the heat treatment at 1000°C (12h). A detailed investigation on structural and functional properties of the as-prepared and heat treated particles was conducted in a comparative manner. High-resolution transmission electron microscopy (HRTEM), X-ray powder diffraction (XRPD) and focus ion beam milling (FIB) revealed in a great consistency the poorly crystallized and porous nature of the as-prepared particles. Well-crystallized coarser primary nanocrystals of Y2O3:Eu3+and Ag, which are hierarchically organized in dense spherical Ag@Y2O3:Eu3+ phosphor particles, were obtained through the heat treatment. Along with the change of structural properties, down conversion (red luminescence at 612nm owing to the Eu3+5D0→7F2 electric dipole transition) and mechanical endurance were enhanced 4-fold and 5-fold via heat treatment, respectively. This comparative study implies a good correlation between mechanical and luminescence behavior of phosphors, both strongly influenced by the particles structural properties.",
publisher = "Elsevier",
journal = "Journal of Materials Research and Technology",
title = "Deep insight into the photoluminescent monocrystalline particles: Heat-treatment, structure, mechanisms and mechanics",
pages = "2466-2472",
volume = "8",
number = "2",
doi = "10.1016/j.jmrt.2018.10.013"
}

Citrate assisted solvothermal synthesis of beta-NaYF4: Yb, Er up-converting nanoparticles

Dinić, Ivana; Vuković, Marina; Vulić, Predrag; Nikolić, Marko G.; Milošević, Olivera; Mančić, Lidija

(Belgrade : Materials Research Society of Serbia, 2019)

TY  - CONF
AU  - Dinić, Ivana
AU  - Vuković, Marina
AU  - Vulić, Predrag
AU  - Nikolić, Marko G.
AU  - Milošević, Olivera
AU  - Mančić, Lidija
PY  - 2019
UR  - http://dais.sanu.ac.rs/123456789/6672
AB  - Thanks to the unique optical properties, up-converting nanoparticles (UCNPs) have a wide application in optoelectronics, forensics, security and biomedicine. The synthesis of the most efficient hexagonal β-NaYF4: Yb/Er phase is usually performed through thermal decomposition of organic precursors which could cause the UCNP cytotoxicity. Since cubic polymorph is kinetically more stable than hexagonal, we used citric acid and Na-citrate for the nucleation of hexagonal NaYF4: Yb, Er phase in nanosized particles. Additionally, effect of different precipitation agents (NaF, NH4F and NH4HF2) used during solvothermal synthesis is explored. The XRPD analysis showed that using of citric acid led to a product composed from mixture of cubic and hexagonal NaYF4: Yb/Er phase, while the presence of Na-citrate influences the nucleation of well crystallized hexagonal β-NaYF4: Yb/Er phase, regardless of precipitation agents used. All samples are composed of polycrystalline spherical particles which size is influenced by the precursor chemistry. UCNPs emit intense green emission due to the (2H11/2, 4S3/2) → 4I15/2 electronic transitions, after been excited with infrared light (λ=978 nm).
PB  - Belgrade : Materials Research Society of Serbia
C3  - Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019
T1  - Citrate assisted solvothermal synthesis of beta-NaYF4: Yb, Er up-converting nanoparticles
SP  - 128
EP  - 128
ER  - 
@conference{
author = "Dinić, Ivana and Vuković, Marina and Vulić, Predrag and Nikolić, Marko G. and Milošević, Olivera and Mančić, Lidija",
year = "2019",
url = "http://dais.sanu.ac.rs/123456789/6672",
abstract = "Thanks to the unique optical properties, up-converting nanoparticles (UCNPs) have a wide application in optoelectronics, forensics, security and biomedicine. The synthesis of the most efficient hexagonal β-NaYF4: Yb/Er phase is usually performed through thermal decomposition of organic precursors which could cause the UCNP cytotoxicity. Since cubic polymorph is kinetically more stable than hexagonal, we used citric acid and Na-citrate for the nucleation of hexagonal NaYF4: Yb, Er phase in nanosized particles. Additionally, effect of different precipitation agents (NaF, NH4F and NH4HF2) used during solvothermal synthesis is explored. The XRPD analysis showed that using of citric acid led to a product composed from mixture of cubic and hexagonal NaYF4: Yb/Er phase, while the presence of Na-citrate influences the nucleation of well crystallized hexagonal β-NaYF4: Yb/Er phase, regardless of precipitation agents used. All samples are composed of polycrystalline spherical particles which size is influenced by the precursor chemistry. UCNPs emit intense green emission due to the (2H11/2, 4S3/2) → 4I15/2 electronic transitions, after been excited with infrared light (λ=978 nm).",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019",
title = "Citrate assisted solvothermal synthesis of beta-NaYF4: Yb, Er up-converting nanoparticles",
pages = "128-128"
}

Plasmon enhanced luminescence in hierarchically structured Ag@ (Y0.95Eu0.05)2O3 nanocomposites synthesized by ultrasonic spray pyrolysis

Alkan, Gözde; Mančić, Lidija; Tamura, Sayaka; Tomita, Koji; Tan, Zhenquan; Sun, Feifei; Rudolf, Rebeka; Ohara, Satoshi; Friedrich, Bernd; Milošević, Olivera

(Elsevier, 2019)

TY  - JOUR
AU  - Alkan, Gözde
AU  - Mančić, Lidija
AU  - Tamura, Sayaka
AU  - Tomita, Koji
AU  - Tan, Zhenquan
AU  - Sun, Feifei
AU  - Rudolf, Rebeka
AU  - Ohara, Satoshi
AU  - Friedrich, Bernd
AU  - Milošević, Olivera
PY  - 2019
UR  - http://www.sciencedirect.com/science/article/pii/S0921883119301141
UR  - http://dais.sanu.ac.rs/123456789/6265
AB  - Ag@ (Y0.95 Eu0.05)2O3 nanocomposites were synthesized by single step Ultrasonic Spray Pyrolysis (USP). 800 °C synthesis temperature and 1.5 l/ min air flow were determined as optimal USP parameters. A detailed parametric study was conducted on samples with varying silver contents and heat treatment conditions. The effect of silver in both as prepared and heat treated samples were elucidated in terms of structural and functional properties. Ag incorporation decreased luminescence efficiency due to the lack of crystallization of matrix and non-homogenous distribution of Eu and Ag in as prepared samples. Heat treatment improved luminescence by improved crystal quality for all samples; however, with increasing Ag content effect of heat treatment was more pronounced owing to uniform distribution of Ag. 2.5 wt% Ag addition followed by 2 h heat treatment after USP synthesis is suggested as the most efficient nanocomposite for red light emitting down converting phosphor applications.
PB  - Elsevier
T2  - Advanced Powder Technology
T1  - Plasmon enhanced luminescence in hierarchically structured Ag@ (Y0.95Eu0.05)2O3 nanocomposites synthesized by ultrasonic spray pyrolysis
SP  - 1409
EP  - 1418
VL  - 30
IS  - 7
DO  - 10.1016/j.apt.2019.04.024
ER  - 
@article{
author = "Alkan, Gözde and Mančić, Lidija and Tamura, Sayaka and Tomita, Koji and Tan, Zhenquan and Sun, Feifei and Rudolf, Rebeka and Ohara, Satoshi and Friedrich, Bernd and Milošević, Olivera",
year = "2019",
url = "http://www.sciencedirect.com/science/article/pii/S0921883119301141, http://dais.sanu.ac.rs/123456789/6265",
abstract = "Ag@ (Y0.95 Eu0.05)2O3 nanocomposites were synthesized by single step Ultrasonic Spray Pyrolysis (USP). 800 °C synthesis temperature and 1.5 l/ min air flow were determined as optimal USP parameters. A detailed parametric study was conducted on samples with varying silver contents and heat treatment conditions. The effect of silver in both as prepared and heat treated samples were elucidated in terms of structural and functional properties. Ag incorporation decreased luminescence efficiency due to the lack of crystallization of matrix and non-homogenous distribution of Eu and Ag in as prepared samples. Heat treatment improved luminescence by improved crystal quality for all samples; however, with increasing Ag content effect of heat treatment was more pronounced owing to uniform distribution of Ag. 2.5 wt% Ag addition followed by 2 h heat treatment after USP synthesis is suggested as the most efficient nanocomposite for red light emitting down converting phosphor applications.",
publisher = "Elsevier",
journal = "Advanced Powder Technology",
title = "Plasmon enhanced luminescence in hierarchically structured Ag@ (Y0.95Eu0.05)2O3 nanocomposites synthesized by ultrasonic spray pyrolysis",
pages = "1409-1418",
volume = "30",
number = "7",
doi = "10.1016/j.apt.2019.04.024"
}
4
4
4

Supplementary material for the article: Muñoz-Fernandez, L., Alkan, G., Milošević, O., Rabanal, M.E., Friedrich, B., 2019. Synthesis and characterisation of spherical core-shell Ag/ZnO nanocomposites using single and two – steps ultrasonic spray pyrolysis (USP). Catalysis Today 321–322, 26–33. https://doi.org/10.1016/j.cattod.2017.11.029

Muñoz-Fernandez, Lidia; Alkan, G.; Milošević, Olivera; Rabanal, Maria Eugenia; Friedrich, B.

(Elsevier, 2019)

@misc{
author = "Muñoz-Fernandez, Lidia and Alkan, G. and Milošević, Olivera and Rabanal, Maria Eugenia and Friedrich, B.",
year = "2019",
url = "http://dais.sanu.ac.rs/123456789/5973",
publisher = "Elsevier",
journal = "Catalysis Today",
title = "Supplementary material for the article: Muñoz-Fernandez, L., Alkan, G., Milošević, O., Rabanal, M.E., Friedrich, B., 2019. Synthesis and characterisation of spherical core-shell Ag/ZnO nanocomposites using single and two – steps ultrasonic spray pyrolysis (USP). Catalysis Today 321–322, 26–33. https://doi.org/10.1016/j.cattod.2017.11.029"
}

Synthesis and characterisation of spherical core-shell Ag/ZnO nanocomposites using single and two – steps ultrasonic spray pyrolysis (USP)

Muñoz-Fernandez, Lidia; Alkan, G.; Milošević, Olivera; Rabanal, Maria Eugenia; Friedrich, B.

(Elsevier, 2019)

TY  - JOUR
AU  - Muñoz-Fernandez, Lidia
AU  - Alkan, G.
AU  - Milošević, Olivera
AU  - Rabanal, Maria Eugenia
AU  - Friedrich, B.
PY  - 2019
UR  - http://dais.sanu.ac.rs/123456789/4602
AB  - Spherical core-shell Ag/ZnO nanocomposites were synthesised by ultrasonic spray pyrolysis (USP) method from zinc nitrate hexahydrate, Zn(NO3)2·6H2O (ZN) and silver nitrate, AgNO3 (SN) precursors. Varying solution concentrations and equipment installations (either single − or two-step USP) allowing simultaneous and consecutive precipitation of Ag and ZnO were examined regarding their effect on final particle microstructure and photocatalytic properties. Morphological analyses revealed pure Ag/ZnO core-shell structure where ZnO secondary submicron sized particles formed by primary crystals with the size of 5–20 nm. Depending on the solution concentrations and USP installations, various distributions of Ag in the final microstructure was revealed. Photocatalytic analyses (all samples reached >45% MB degradation) confirm the all Ag/ZnO USP systems viability for environmental applications. The best result (93% of methylene blue (MB) elimination) is obtained for the sample with the maximum available surface, which strongly depends on particle morphology, size, and dispersion. Moreover, all samples synthesised by single step co-precipitation revealed higher dye elimination concerning ones with two steps precipitation due to the favoured distribution of silver nanoparticles in their microstructure and higher specific surface area. Moreover, samples with a uniform and homogeneous Ag distribution exhibited silver-induced enhancement of photocatalytic performance. © 2017 Elsevier B.V.
PB  - Elsevier
T2  - Catalysis Today
T1  - Synthesis and characterisation of spherical core-shell Ag/ZnO nanocomposites using single and two – steps ultrasonic spray pyrolysis (USP)
SP  - 26
EP  - 33
VL  - 321-322
DO  - 10.1016/j.cattod.2017.11.029
ER  - 
@article{
author = "Muñoz-Fernandez, Lidia and Alkan, G. and Milošević, Olivera and Rabanal, Maria Eugenia and Friedrich, B.",
year = "2019",
url = "http://dais.sanu.ac.rs/123456789/4602",
abstract = "Spherical core-shell Ag/ZnO nanocomposites were synthesised by ultrasonic spray pyrolysis (USP) method from zinc nitrate hexahydrate, Zn(NO3)2·6H2O (ZN) and silver nitrate, AgNO3 (SN) precursors. Varying solution concentrations and equipment installations (either single − or two-step USP) allowing simultaneous and consecutive precipitation of Ag and ZnO were examined regarding their effect on final particle microstructure and photocatalytic properties. Morphological analyses revealed pure Ag/ZnO core-shell structure where ZnO secondary submicron sized particles formed by primary crystals with the size of 5–20 nm. Depending on the solution concentrations and USP installations, various distributions of Ag in the final microstructure was revealed. Photocatalytic analyses (all samples reached >45% MB degradation) confirm the all Ag/ZnO USP systems viability for environmental applications. The best result (93% of methylene blue (MB) elimination) is obtained for the sample with the maximum available surface, which strongly depends on particle morphology, size, and dispersion. Moreover, all samples synthesised by single step co-precipitation revealed higher dye elimination concerning ones with two steps precipitation due to the favoured distribution of silver nanoparticles in their microstructure and higher specific surface area. Moreover, samples with a uniform and homogeneous Ag distribution exhibited silver-induced enhancement of photocatalytic performance. © 2017 Elsevier B.V.",
publisher = "Elsevier",
journal = "Catalysis Today",
title = "Synthesis and characterisation of spherical core-shell Ag/ZnO nanocomposites using single and two – steps ultrasonic spray pyrolysis (USP)",
pages = "26-33",
volume = "321-322",
doi = "10.1016/j.cattod.2017.11.029"
}
10
11
10

Synthesis and characterisation of spherical core-shell Ag/ZnO nanocomposites using single and two – steps ultrasonic spray pyrolysis (USP)

Muñoz-Fernandez, Lidia; Alkan, G.; Milošević, Olivera; Rabanal, Maria Eugenia; Friedrich, B.

(Elsevier, 2019)

TY  - JOUR
AU  - Muñoz-Fernandez, Lidia
AU  - Alkan, G.
AU  - Milošević, Olivera
AU  - Rabanal, Maria Eugenia
AU  - Friedrich, B.
PY  - 2019
UR  - http://dais.sanu.ac.rs/123456789/4591
AB  - Spherical core-shell Ag/ZnO nanocomposites were synthesised by ultrasonic spray pyrolysis (USP) method from zinc nitrate hexahydrate, Zn(NO3)2·6H2O (ZN) and silver nitrate, AgNO3 (SN) precursors. Varying solution concentrations and equipment installations (either single − or two-step USP) allowing simultaneous and consecutive precipitation of Ag and ZnO were examined regarding their effect on final particle microstructure and photocatalytic properties. Morphological analyses revealed pure Ag/ZnO core-shell structure where ZnO secondary submicron sized particles formed by primary crystals with the size of 5–20 nm. Depending on the solution concentrations and USP installations, various distributions of Ag in the final microstructure was revealed. Photocatalytic analyses (all samples reached >45% MB degradation) confirm the all Ag/ZnO USP systems viability for environmental applications. The best result (93% of methylene blue (MB) elimination) is obtained for the sample with the maximum available surface, which strongly depends on particle morphology, size, and dispersion. Moreover, all samples synthesised by single step co-precipitation revealed higher dye elimination concerning ones with two steps precipitation due to the favoured distribution of silver nanoparticles in their microstructure and higher specific surface area. Moreover, samples with a uniform and homogeneous Ag distribution exhibited silver-induced enhancement of photocatalytic performance. © 2017 Elsevier B.V.
PB  - Elsevier
T2  - Catalysis Today
T1  - Synthesis and characterisation of spherical core-shell Ag/ZnO nanocomposites using single and two – steps ultrasonic spray pyrolysis (USP)
SP  - 26
EP  - 33
VL  - 321-322
DO  - 10.1016/j.cattod.2017.11.029
ER  - 
@article{
author = "Muñoz-Fernandez, Lidia and Alkan, G. and Milošević, Olivera and Rabanal, Maria Eugenia and Friedrich, B.",
year = "2019",
url = "http://dais.sanu.ac.rs/123456789/4591",
abstract = "Spherical core-shell Ag/ZnO nanocomposites were synthesised by ultrasonic spray pyrolysis (USP) method from zinc nitrate hexahydrate, Zn(NO3)2·6H2O (ZN) and silver nitrate, AgNO3 (SN) precursors. Varying solution concentrations and equipment installations (either single − or two-step USP) allowing simultaneous and consecutive precipitation of Ag and ZnO were examined regarding their effect on final particle microstructure and photocatalytic properties. Morphological analyses revealed pure Ag/ZnO core-shell structure where ZnO secondary submicron sized particles formed by primary crystals with the size of 5–20 nm. Depending on the solution concentrations and USP installations, various distributions of Ag in the final microstructure was revealed. Photocatalytic analyses (all samples reached >45% MB degradation) confirm the all Ag/ZnO USP systems viability for environmental applications. The best result (93% of methylene blue (MB) elimination) is obtained for the sample with the maximum available surface, which strongly depends on particle morphology, size, and dispersion. Moreover, all samples synthesised by single step co-precipitation revealed higher dye elimination concerning ones with two steps precipitation due to the favoured distribution of silver nanoparticles in their microstructure and higher specific surface area. Moreover, samples with a uniform and homogeneous Ag distribution exhibited silver-induced enhancement of photocatalytic performance. © 2017 Elsevier B.V.",
publisher = "Elsevier",
journal = "Catalysis Today",
title = "Synthesis and characterisation of spherical core-shell Ag/ZnO nanocomposites using single and two – steps ultrasonic spray pyrolysis (USP)",
pages = "26-33",
volume = "321-322",
doi = "10.1016/j.cattod.2017.11.029"
}
10
11
10

NIR photo-driven upconversion in NaYF4:Yb,Er/PLGA particles for in vitro bioimaging of cancer cells

Mančić, Lidija; Đukić Vuković, Aleksandra; Dinić, Ivana; Nikolić, Marko G.; Rabasović, Mihailo D.; Krmpot, Aleksandar; Costa, Antonio Mario Leal Martins; Trišić, Dijana; Lazarević, Miloš; Mojović, Ljiljana; Milošević, Olivera

(Elsevier, 2018)

TY  - JOUR
AU  - Mančić, Lidija
AU  - Đukić Vuković, Aleksandra
AU  - Dinić, Ivana
AU  - Nikolić, Marko G.
AU  - Rabasović, Mihailo D.
AU  - Krmpot, Aleksandar
AU  - Costa, Antonio Mario Leal Martins
AU  - Trišić, Dijana
AU  - Lazarević, Miloš
AU  - Mojović, Ljiljana
AU  - Milošević, Olivera
PY  - 2018
UR  - http://dais.sanu.ac.rs/123456789/3693
AB  - Lanthanide-doped fluoride up-converting nanoparticles (UCNPs) represent the new class of imaging contrast agents which hold great potential for overcoming existing problems associated with traditionally used dyes, proteins and quantum dots. In this study, a new kind of hybrid NaYF4:Yb,Er/PLGA nanoparticles for efficient biolabeling were prepared through one-pot solvothermal synthesis route. Morphological and structural characteristics of the as-designed particles were obtained using X-ray powder diffraction (XRPD), scanning and transmission electron microscopy (SEM/TEM), energy dispersive spectroscopy (EDS), Fourier transform infrared (FTIR) and photoluminescence (PL) spectroscopy, while their cytotoxicity as well as up-conversion (UC) labeling capability were tested in vitro toward human gingival cells (HGC) and oral squamous cell carcinoma (OSCC). The results revealed coexistence of the cubic (Fm-3m) and hexagonal (P63/m) phase in spherical and irregularly shaped nanoparticles, respectively. PLGA [Poly(lactic-co-glycolic acid)] ligands attached at the surface of UCNPs particles provide their enhanced cellular uptake and enable high-quality cells imaging through a near-infrared (NIR) laser scanning microscopy (λex = 980 nm). Moreover, the fact that NaYF4:Yb,Er/PLGA UCNPs show low cytotoxicity against HGC over the whole concentration range (10–50 μg/mL) while a dose dependent viability of OSCC is obtained indicates that these might be a promising candidates for targeted cancer cell therapy. © 2018 Elsevier B.V.
PB  - Elsevier
T2  - Materials Science and Engineering C
T1  - NIR photo-driven upconversion in NaYF4:Yb,Er/PLGA particles for in vitro bioimaging of cancer cells
SP  - 597
EP  - 605
VL  - 91
DO  - 10.1016/j.msec.2018.05.081
ER  - 
@article{
author = "Mančić, Lidija and Đukić Vuković, Aleksandra and Dinić, Ivana and Nikolić, Marko G. and Rabasović, Mihailo D. and Krmpot, Aleksandar and Costa, Antonio Mario Leal Martins and Trišić, Dijana and Lazarević, Miloš and Mojović, Ljiljana and Milošević, Olivera",
year = "2018",
url = "http://dais.sanu.ac.rs/123456789/3693",
abstract = "Lanthanide-doped fluoride up-converting nanoparticles (UCNPs) represent the new class of imaging contrast agents which hold great potential for overcoming existing problems associated with traditionally used dyes, proteins and quantum dots. In this study, a new kind of hybrid NaYF4:Yb,Er/PLGA nanoparticles for efficient biolabeling were prepared through one-pot solvothermal synthesis route. Morphological and structural characteristics of the as-designed particles were obtained using X-ray powder diffraction (XRPD), scanning and transmission electron microscopy (SEM/TEM), energy dispersive spectroscopy (EDS), Fourier transform infrared (FTIR) and photoluminescence (PL) spectroscopy, while their cytotoxicity as well as up-conversion (UC) labeling capability were tested in vitro toward human gingival cells (HGC) and oral squamous cell carcinoma (OSCC). The results revealed coexistence of the cubic (Fm-3m) and hexagonal (P63/m) phase in spherical and irregularly shaped nanoparticles, respectively. PLGA [Poly(lactic-co-glycolic acid)] ligands attached at the surface of UCNPs particles provide their enhanced cellular uptake and enable high-quality cells imaging through a near-infrared (NIR) laser scanning microscopy (λex = 980 nm). Moreover, the fact that NaYF4:Yb,Er/PLGA UCNPs show low cytotoxicity against HGC over the whole concentration range (10–50 μg/mL) while a dose dependent viability of OSCC is obtained indicates that these might be a promising candidates for targeted cancer cell therapy. © 2018 Elsevier B.V.",
publisher = "Elsevier",
journal = "Materials Science and Engineering C",
title = "NIR photo-driven upconversion in NaYF4:Yb,Er/PLGA particles for in vitro bioimaging of cancer cells",
pages = "597-605",
volume = "91",
doi = "10.1016/j.msec.2018.05.081"
}
8
7
7

Effects of Gd3+ co-doping on NaYF4:Yb,Er nanoparticles structure

Vuković, Marina; Dinić, Ivana; Mančić, Lidija; Vulić, Predrag

(Belgrade : Serbian Ceramic Society, 2018)

TY  - CONF
AU  - Vuković, Marina
AU  - Dinić, Ivana
AU  - Mančić, Lidija
AU  - Vulić, Predrag
PY  - 2018
UR  - http://dais.sanu.ac.rs/123456789/4117
AB  - NaYF4 doped with Rare Earth elements such as Yb and Er is well known as a compound with the remarkable up-conversion photoluminesce and wide application. In this work, the influence of additional co-doping of NaYF4:Yb,Er with gadolinium (0, 15 and 30 mol%) was explored. The syntheses were performed solvothermally using the mixture of water/ethanol as medium and polyvinylpyrrolidone (PVP) as capping ligand. The obtained powders were subjected to X-ray powder diffraction (XRPD), scanning electron microscopy (SEM), Fourier-transform infrared (FTIR) spectroscopy and photoluminesce (PL) analyses. Structural refinement shown that NaYF4:Yb,Er particles generally crystallized in a cubic form (Fm-3m), while the additional presence of Gd3+ in the crystal lattice lead to the pure hexagonal phase crystallization (P63/m). Morphological analyses revealed that all powders are composed from nanodimensional particles with the size in the range of 50-70 nm, while FTIR spectra confirmed the presence of PVP functional groups on the particles surfaces. The strongest effect of Gd3+ doping was notices in the PL spectra, where the up-conversion response increases with the mol% of this dopant.
PB  - Belgrade : Serbian Ceramic Society
C3  - Program and the Book of Abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application VII : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 17-19 September 2018
T1  - Effects of Gd3+ co-doping on NaYF4:Yb,Er nanoparticles structure
SP  - 72
EP  - 72
ER  - 
@conference{
author = "Vuković, Marina and Dinić, Ivana and Mančić, Lidija and Vulić, Predrag",
year = "2018",
url = "http://dais.sanu.ac.rs/123456789/4117",
abstract = "NaYF4 doped with Rare Earth elements such as Yb and Er is well known as a compound with the remarkable up-conversion photoluminesce and wide application. In this work, the influence of additional co-doping of NaYF4:Yb,Er with gadolinium (0, 15 and 30 mol%) was explored. The syntheses were performed solvothermally using the mixture of water/ethanol as medium and polyvinylpyrrolidone (PVP) as capping ligand. The obtained powders were subjected to X-ray powder diffraction (XRPD), scanning electron microscopy (SEM), Fourier-transform infrared (FTIR) spectroscopy and photoluminesce (PL) analyses. Structural refinement shown that NaYF4:Yb,Er particles generally crystallized in a cubic form (Fm-3m), while the additional presence of Gd3+ in the crystal lattice lead to the pure hexagonal phase crystallization (P63/m). Morphological analyses revealed that all powders are composed from nanodimensional particles with the size in the range of 50-70 nm, while FTIR spectra confirmed the presence of PVP functional groups on the particles surfaces. The strongest effect of Gd3+ doping was notices in the PL spectra, where the up-conversion response increases with the mol% of this dopant.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Program and the Book of Abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application VII : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 17-19 September 2018",
title = "Effects of Gd3+ co-doping on NaYF4:Yb,Er nanoparticles structure",
pages = "72-72"
}

Supplement information for the article: Mancic, L., Djukic-Vukovic, A., Dinic, I., Nikolic, M.G., Rabasovic, M.D., Krmpot, A.J., Costa, A.M.L.M., Trisic, D., Lazarevic, M., Mojovic, L., Milosevic, O., 2018. NIR photo-driven upconversion in NaYF4:Yb,Er/PLGA particles for in vitro bioimaging of cancer cells. Materials Science and Engineering C 91, 597–605. https://doi.org/10.1016/j.msec.2018.05.081

Mančić, Lidija; Đukić Vuković, Aleksandra; Dinić, Ivana; Nikolić, Marko G.; Rabasović, Mihailo D.; Krmpot, Aleksandar; Costa, Antonio Mario Leal Martins; Trišić, Dijana; Lazarević, Miloš; Mojović, Ljiljana; Milošević, Olivera

(2018)

@misc{
author = "Mančić, Lidija and Đukić Vuković, Aleksandra and Dinić, Ivana and Nikolić, Marko G. and Rabasović, Mihailo D. and Krmpot, Aleksandar and Costa, Antonio Mario Leal Martins and Trišić, Dijana and Lazarević, Miloš and Mojović, Ljiljana and Milošević, Olivera",
year = "2018",
url = "http://dais.sanu.ac.rs/123456789/5978",
journal = "Materials Science and Engineering C",
title = "Supplement information for the article: Mancic, L., Djukic-Vukovic, A., Dinic, I., Nikolic, M.G., Rabasovic, M.D., Krmpot, A.J., Costa, A.M.L.M., Trisic, D., Lazarevic, M., Mojovic, L., Milosevic, O., 2018. NIR photo-driven upconversion in NaYF4:Yb,Er/PLGA particles for in vitro bioimaging of cancer cells. Materials Science and Engineering C 91, 597–605. https://doi.org/10.1016/j.msec.2018.05.081"
}

NIR photo-driven upconversion in NaYF4:Yb,Er/PLGA particles for in vitro bioimaging of cancer cells

Mančić, Lidija; Đukić Vuković, Aleksandra; Dinić, Ivana; Nikolić, Marko G.; Rabasović, Mihailo D.; Krmpot, Aleksandar; Costa, Antonio Mario Leal Martins; Trišić, Dijana; Lazarević, Miloš; Mojović, Ljiljana; Milošević, Olivera

(Elsevier, 2018)

TY  - JOUR
AU  - Mančić, Lidija
AU  - Đukić Vuković, Aleksandra
AU  - Dinić, Ivana
AU  - Nikolić, Marko G.
AU  - Rabasović, Mihailo D.
AU  - Krmpot, Aleksandar
AU  - Costa, Antonio Mario Leal Martins
AU  - Trišić, Dijana
AU  - Lazarević, Miloš
AU  - Mojović, Ljiljana
AU  - Milošević, Olivera
PY  - 2018
UR  - http://dais.sanu.ac.rs/123456789/4083
AB  - Lanthanide-doped fluoride up-converting nanoparticles (UCNPs) represent the new class of imaging contrast agents which hold great potential for overcoming existing problems associated with traditionally used dyes, proteins and quantum dots. In this study, a new kind of hybrid NaYF4:Yb,Er/PLGA nanoparticles for efficient biolabeling were prepared through one-pot solvothermal synthesis route. Morphological and structural characteristics of the as-designed particles were obtained using X-ray powder diffraction (XRPD), scanning and transmission electron microscopy (SEM/TEM), energy dispersive spectroscopy (EDS), Fourier transform infrared (FTIR) and photoluminescence (PL) spectroscopy, while their cytotoxicity as well as up-conversion (UC) labeling capability were tested in vitro toward human gingival cells (HGC) and oral squamous cell carcinoma (OSCC). The results revealed coexistence of the cubic (Fm-3m) and hexagonal (P63/m) phase in spherical and irregularly shaped nanoparticles, respectively. PLGA [Poly(lactic-co-glycolic acid)] ligands attached at the surface of UCNPs particles provide their enhanced cellular uptake and enable high-quality cells imaging through a near-infrared (NIR) laser scanning microscopy (λex = 980 nm). Moreover, the fact that NaYF4:Yb,Er/PLGA UCNPs show low cytotoxicity against HGC over the whole concentration range (10–50 μg/mL) while a dose dependent viability of OSCC is obtained indicates that these might be a promising candidates for targeted cancer cell therapy. © 2018 Elsevier B.V.
PB  - Elsevier
T2  - Materials Science and Engineering C
T1  - NIR photo-driven upconversion in NaYF4:Yb,Er/PLGA particles for in vitro bioimaging of cancer cells
SP  - 597
EP  - 605
VL  - 91
DO  - 10.1016/j.msec.2018.05.081
ER  - 
@article{
author = "Mančić, Lidija and Đukić Vuković, Aleksandra and Dinić, Ivana and Nikolić, Marko G. and Rabasović, Mihailo D. and Krmpot, Aleksandar and Costa, Antonio Mario Leal Martins and Trišić, Dijana and Lazarević, Miloš and Mojović, Ljiljana and Milošević, Olivera",
year = "2018",
url = "http://dais.sanu.ac.rs/123456789/4083",
abstract = "Lanthanide-doped fluoride up-converting nanoparticles (UCNPs) represent the new class of imaging contrast agents which hold great potential for overcoming existing problems associated with traditionally used dyes, proteins and quantum dots. In this study, a new kind of hybrid NaYF4:Yb,Er/PLGA nanoparticles for efficient biolabeling were prepared through one-pot solvothermal synthesis route. Morphological and structural characteristics of the as-designed particles were obtained using X-ray powder diffraction (XRPD), scanning and transmission electron microscopy (SEM/TEM), energy dispersive spectroscopy (EDS), Fourier transform infrared (FTIR) and photoluminescence (PL) spectroscopy, while their cytotoxicity as well as up-conversion (UC) labeling capability were tested in vitro toward human gingival cells (HGC) and oral squamous cell carcinoma (OSCC). The results revealed coexistence of the cubic (Fm-3m) and hexagonal (P63/m) phase in spherical and irregularly shaped nanoparticles, respectively. PLGA [Poly(lactic-co-glycolic acid)] ligands attached at the surface of UCNPs particles provide their enhanced cellular uptake and enable high-quality cells imaging through a near-infrared (NIR) laser scanning microscopy (λex = 980 nm). Moreover, the fact that NaYF4:Yb,Er/PLGA UCNPs show low cytotoxicity against HGC over the whole concentration range (10–50 μg/mL) while a dose dependent viability of OSCC is obtained indicates that these might be a promising candidates for targeted cancer cell therapy. © 2018 Elsevier B.V.",
publisher = "Elsevier",
journal = "Materials Science and Engineering C",
title = "NIR photo-driven upconversion in NaYF4:Yb,Er/PLGA particles for in vitro bioimaging of cancer cells",
pages = "597-605",
volume = "91",
doi = "10.1016/j.msec.2018.05.081"
}
8
7
7

One-step synthesis of amino-functionalized up-converting NaYF4:Yb,Er nanoparticles for: In vitro cell imaging

Mančić, Lidija; Đukić Vuković, Aleksandra; Dinić, Ivana; Nikolić, Marko G.; Rabasović, Mihailo D.; Krmpot, Aleksandar; Costa, Antonio Mario Leal Martins; Marinković, Bojan A.; Mojović, Ljiljana; Milošević, Olivera

(London : Royal Society of Chemistry, 2018)

TY  - JOUR
AU  - Mančić, Lidija
AU  - Đukić Vuković, Aleksandra
AU  - Dinić, Ivana
AU  - Nikolić, Marko G.
AU  - Rabasović, Mihailo D.
AU  - Krmpot, Aleksandar
AU  - Costa, Antonio Mario Leal Martins
AU  - Marinković, Bojan A.
AU  - Mojović, Ljiljana
AU  - Milošević, Olivera
PY  - 2018
UR  - http://dais.sanu.ac.rs/123456789/3748
AB  - The emerging up-conversion nanoparticles (UCNPs) offer a wide range of biotechnology applications, from biomarkers and deep tissue imaging, to single molecule tracking and drug delivery. Their successful conjugation to biocompatible agents is crucial for specific molecules recognition and usually requires multiple steps which may lead to low reproducibility. Here, we report a simple and rapid one-step procedure for in situ synthesis of biocompatible amino-functionalized NaYF4:Yb,Er UCNPs that could be used for NIR-driven fluorescence cell labeling. X-ray diffraction showed that UCNPs synthesized through chitosan-assisted solvothermal processing are monophasic and crystallize in a cubic α phase. Scanning and transmission electron microscopy revealed that the obtained crystals are spherical in shape with a mean diameter of 120 nm. Photoluminescence spectra indicated weaker green (2H11/2, 4S3/2 → 4I15/2) and stronger red emission (4F9/2 → 4I15/2), as a result of enhanced non-radiative 4I11/2 → 4I13/2 Er3+ relaxation. The presence of chitosan groups at the surface of UCNPs was confirmed by Fourier transform infrared spectroscopy, thermogravimetry and X-ray photoelectron spectroscopy. This provides their enhanced internalization in cells, at low concentration of 10 μg ml-1, without suppression of cell viability after 24 h of exposure. Furthermore, upon 980 nm laser irradiation, the amino-functionalized NaYF4:Yb,Er UCNPs were successfully used in vitro for labeling of two human cell types, normal gingival and oral squamous cell carcinoma. © 2018 The Royal Society of Chemistry.
PB  - London : Royal Society of Chemistry
T2  - RSC Advances
T2  - RSC Advances
T1  - One-step synthesis of amino-functionalized up-converting NaYF4:Yb,Er nanoparticles for: In vitro cell imaging
SP  - 27429
EP  - 27437
VL  - 8
IS  - 48
DO  - 10.1039/c8ra04178d
ER  - 
@article{
author = "Mančić, Lidija and Đukić Vuković, Aleksandra and Dinić, Ivana and Nikolić, Marko G. and Rabasović, Mihailo D. and Krmpot, Aleksandar and Costa, Antonio Mario Leal Martins and Marinković, Bojan A. and Mojović, Ljiljana and Milošević, Olivera",
year = "2018",
url = "http://dais.sanu.ac.rs/123456789/3748",
abstract = "The emerging up-conversion nanoparticles (UCNPs) offer a wide range of biotechnology applications, from biomarkers and deep tissue imaging, to single molecule tracking and drug delivery. Their successful conjugation to biocompatible agents is crucial for specific molecules recognition and usually requires multiple steps which may lead to low reproducibility. Here, we report a simple and rapid one-step procedure for in situ synthesis of biocompatible amino-functionalized NaYF4:Yb,Er UCNPs that could be used for NIR-driven fluorescence cell labeling. X-ray diffraction showed that UCNPs synthesized through chitosan-assisted solvothermal processing are monophasic and crystallize in a cubic α phase. Scanning and transmission electron microscopy revealed that the obtained crystals are spherical in shape with a mean diameter of 120 nm. Photoluminescence spectra indicated weaker green (2H11/2, 4S3/2 → 4I15/2) and stronger red emission (4F9/2 → 4I15/2), as a result of enhanced non-radiative 4I11/2 → 4I13/2 Er3+ relaxation. The presence of chitosan groups at the surface of UCNPs was confirmed by Fourier transform infrared spectroscopy, thermogravimetry and X-ray photoelectron spectroscopy. This provides their enhanced internalization in cells, at low concentration of 10 μg ml-1, without suppression of cell viability after 24 h of exposure. Furthermore, upon 980 nm laser irradiation, the amino-functionalized NaYF4:Yb,Er UCNPs were successfully used in vitro for labeling of two human cell types, normal gingival and oral squamous cell carcinoma. © 2018 The Royal Society of Chemistry.",
publisher = "London : Royal Society of Chemistry",
journal = "RSC Advances, RSC Advances",
title = "One-step synthesis of amino-functionalized up-converting NaYF4:Yb,Er nanoparticles for: In vitro cell imaging",
pages = "27429-27437",
volume = "8",
number = "48",
doi = "10.1039/c8ra04178d"
}
4
4
4

One-pot synthesis of biocompatible NaYF4:Yb,Er nanoparticles for cell labeling

Dinić, Ivana; Vuković, Marina; Mančić, Lidija; Krmpot, Aleksandar; Milošević, Olivera

(Belgrade : Materials Research Society of Serbia, 2018)

TY  - CONF
AU  - Dinić, Ivana
AU  - Vuković, Marina
AU  - Mančić, Lidija
AU  - Krmpot, Aleksandar
AU  - Milošević, Olivera
PY  - 2018
UR  - http://dais.sanu.ac.rs/123456789/3635
AB  - In modern medical research, great attention has been focused to the development of the new biomarkers which include up-converting nanoparticles (UCNPs). Their optical response is triggered by NIR radiation that achieves deeper tissue penetration when compared with traditionally used fluorophores. In this work, biocompatible NaYF4: Yb, Er nanoparticles were synthesized by polymer assisted one-pot solvothermal processing using chitosan or poly(lacticco- glycolic acid). X-ray powder diffraction and electron microscopy results revealed differences in crystal arrangement and morphology of the as-synthesized particles. Fourier transform infrared spectroscopy confirmed the presence of corresponding polymers moiety on UCNPs surface providing their biocompatibility and low cytotoxicity towards human gingival fibroblasts (HFG). As a consequence of efficient up-conversion, prominent green emission (between 512-533nm and between 533-560nm) as well as red emission (630-690nm) were recorded in the particles photoluminescence spectra, and these are applied further in the visualization of the HFG using the laser scanning microscopy with a NIR laser source.
PB  - Belgrade : Materials Research Society of Serbia
C3  - Programme and The Book of Abstracts / Twentieth Annual Conference YUCOMAT 2018, Herceg Novi, September 3-7, 2018
T1  - One-pot synthesis of biocompatible NaYF4:Yb,Er nanoparticles for cell labeling
SP  - 116
EP  - 116
ER  - 
@conference{
author = "Dinić, Ivana and Vuković, Marina and Mančić, Lidija and Krmpot, Aleksandar and Milošević, Olivera",
year = "2018",
url = "http://dais.sanu.ac.rs/123456789/3635",
abstract = "In modern medical research, great attention has been focused to the development of the new biomarkers which include up-converting nanoparticles (UCNPs). Their optical response is triggered by NIR radiation that achieves deeper tissue penetration when compared with traditionally used fluorophores. In this work, biocompatible NaYF4: Yb, Er nanoparticles were synthesized by polymer assisted one-pot solvothermal processing using chitosan or poly(lacticco- glycolic acid). X-ray powder diffraction and electron microscopy results revealed differences in crystal arrangement and morphology of the as-synthesized particles. Fourier transform infrared spectroscopy confirmed the presence of corresponding polymers moiety on UCNPs surface providing their biocompatibility and low cytotoxicity towards human gingival fibroblasts (HFG). As a consequence of efficient up-conversion, prominent green emission (between 512-533nm and between 533-560nm) as well as red emission (630-690nm) were recorded in the particles photoluminescence spectra, and these are applied further in the visualization of the HFG using the laser scanning microscopy with a NIR laser source.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Programme and The Book of Abstracts / Twentieth Annual Conference YUCOMAT 2018, Herceg Novi, September 3-7, 2018",
title = "One-pot synthesis of biocompatible NaYF4:Yb,Er nanoparticles for cell labeling",
pages = "116-116"
}

Polyacrilic Acid and Chitosan Assisted Solvothermal Synthesis of Up-converting NaYF4: Yb,Er Particles

Vuković, Marina; Dinić, Ivana; Mančić, Lidija; Nikolić, Marko G.; Rabasović, Mihailo D.; Milošević, Olivera

(Belgrade : Serbian Academy of Sciences and Arts, 2018)

TY  - CONF
AU  - Vuković, Marina
AU  - Dinić, Ivana
AU  - Mančić, Lidija
AU  - Nikolić, Marko G.
AU  - Rabasović, Mihailo D.
AU  - Milošević, Olivera
PY  - 2018
UR  - http://dais.sanu.ac.rs/123456789/3627
AB  - There is a growing interest for development of a facile and reproducible approach  for the synthesis of biocompatible lanthanide doped up-converting nanoparticles (UCNPs) for deep tissue imaging and targeted drug delivery. Synthesis of such particles is usually performed through the decomposition of organometallic compounds, followed either with a ligands exchange or with a biocompatible layer coating. In this work, biocompatible NaYF4:Yb,Er (17 mol% Yb; 3 mol% Er) nanoparticles were synthesized by one-pot hydrothermal processing with an assistance of chitosan (Ch) or polyacrylic acid (PAA). Obtained powders were analyzed by X-ray powder diffraction (XRPD, Bruker D8 Discovery), field emission scanning electron microscopy (FE-SEM, Zeiss, DSM 960), transmission electron microscopy (TEM, JEOL JEM 2010), Fourier transform infrared (FTIR, Thermo Scientific Nicolet 6700) and photoluminescence (PL, Spex Fluorolog with C31034 cooled photomultiplier) spectroscopy. The results showed that although both powders crystallize in the same crystal arrangement (cubic, Fm-3m), particles size, shape and optical properties are dependent on the polymer used.
PB  - Belgrade : Serbian Academy of Sciences and Arts
C3  - Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia
T1  - Polyacrilic Acid and Chitosan Assisted Solvothermal Synthesis of Up-converting NaYF4: Yb,Er Particles
SP  - 195
EP  - 197
ER  - 
@conference{
author = "Vuković, Marina and Dinić, Ivana and Mančić, Lidija and Nikolić, Marko G. and Rabasović, Mihailo D. and Milošević, Olivera",
year = "2018",
url = "http://dais.sanu.ac.rs/123456789/3627",
abstract = "There is a growing interest for development of a facile and reproducible approach  for the synthesis of biocompatible lanthanide doped up-converting nanoparticles (UCNPs) for deep tissue imaging and targeted drug delivery. Synthesis of such particles is usually performed through the decomposition of organometallic compounds, followed either with a ligands exchange or with a biocompatible layer coating. In this work, biocompatible NaYF4:Yb,Er (17 mol% Yb; 3 mol% Er) nanoparticles were synthesized by one-pot hydrothermal processing with an assistance of chitosan (Ch) or polyacrylic acid (PAA). Obtained powders were analyzed by X-ray powder diffraction (XRPD, Bruker D8 Discovery), field emission scanning electron microscopy (FE-SEM, Zeiss, DSM 960), transmission electron microscopy (TEM, JEOL JEM 2010), Fourier transform infrared (FTIR, Thermo Scientific Nicolet 6700) and photoluminescence (PL, Spex Fluorolog with C31034 cooled photomultiplier) spectroscopy. The results showed that although both powders crystallize in the same crystal arrangement (cubic, Fm-3m), particles size, shape and optical properties are dependent on the polymer used.",
publisher = "Belgrade : Serbian Academy of Sciences and Arts",
journal = "Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia",
title = "Polyacrilic Acid and Chitosan Assisted Solvothermal Synthesis of Up-converting NaYF4: Yb,Er Particles",
pages = "195-197"
}