Surface modified up-conversion rare earth fluorides have attracted attention in recent years. Owing to their unique optical properties they can be used for biomedical application such as bio-detection, fluorescene imaging and in drug delivery systems. Different synthesis methods which generate nano- and micro-crystals with controllable compositions have been reported. For improved control of size, shape and morphology of the particles surfactants or structure directing agents are used. In this work PEG or PVP capped NaYF4 particles were synthesized using hydro/solvo-thermal synthesis at 200 ºC (3h). Their structural, morphological and luminescence characteristics have been studied based on X-ray powder diffractometry (XRPD), Fourier transform infrared spectroscopy (FTIR), energy dispersive spectroscopy (EDS), scanning and transmission electron microscopy (SEM/TEM) and photoluminescence measurements. Both polymers proved to be a good structure directing agents enabling generation of the... well crystalline polymer coated upconverting particles with efficient emissions in visible spectrum. It was shown that generation of the hexagonal P63/m β- NaYF4:Yb3+/Er3+ phase with the most efficient green emission (CIE 0.31, 0.66) is enhanced when PVP is used during synthesis, while formation of the cubic Fm-3m α-NaYF4:Yb3+/Er3+ phase that has a yellowish spectral output (CIE 0.41, 0.56) was observed in the particles produced in the presence of PEG. Increase of the luminescence intensity was achieved with additional particles annealing in argon atmosphere at 400 ºC (5h).
Program and the Book of Abstracts / Fourteenth Young Researchers' Conference Materials Sciences and Engineering, December 9-11, 2015, Belgrade, Serbia, 2015, 20-20
Publisher:
Belgrade : Institute of Technical Sciences of SASA
TY - CONF
AU - Dinić, Ivana
AU - Mančić, Lidija
AU - Rabanal, Maria Eugenia
AU - Milošević, Olivera
PY - 2015
UR - http://dais.sanu.ac.rs/123456789/832
AB - Surface modified up-conversion rare earth fluorides have attracted attention in recent years. Owing to their unique optical properties they can be used for biomedical application such as bio-detection, fluorescene imaging and in drug delivery systems. Different synthesis methods which generate nano- and micro-crystals with controllable compositions have been reported. For improved control of size, shape and morphology of the particles surfactants or structure directing agents are used. In this work PEG or PVP capped NaYF4 particles were synthesized using hydro/solvo-thermal synthesis at 200 ºC (3h). Their structural, morphological and luminescence characteristics have been studied based on X-ray powder diffractometry (XRPD), Fourier transform infrared spectroscopy (FTIR), energy dispersive spectroscopy (EDS), scanning and transmission electron microscopy (SEM/TEM) and photoluminescence measurements. Both polymers proved to be a good structure directing agents enabling generation of the well crystalline polymer coated upconverting particles with efficient emissions in visible spectrum. It was shown that generation of the hexagonal P63/m β- NaYF4:Yb3+/Er3+ phase with the most efficient green emission (CIE 0.31, 0.66) is enhanced when PVP is used during synthesis, while formation of the cubic Fm-3m α-NaYF4:Yb3+/Er3+ phase that has a yellowish spectral output (CIE 0.41, 0.56) was observed in the particles produced in the presence of PEG. Increase of the luminescence intensity was achieved with additional particles annealing in argon atmosphere at 400 ºC (5h).
PB - Belgrade : Institute of Technical Sciences of SASA
C3 - Program and the Book of Abstracts / Fourteenth Young Researchers' Conference Materials Sciences and Engineering, December 9-11, 2015, Belgrade, Serbia
T1 - Hydro/solvo-thermal synthesis of surface modified NaYF4 co-doped Yb3+/Er3+ up-conversion nanoparticles
SP - 20
EP - 20
ER -
@conference{
author = "Dinić, Ivana and Mančić, Lidija and Rabanal, Maria Eugenia and Milošević, Olivera",
year = "2015",
url = "http://dais.sanu.ac.rs/123456789/832",
abstract = "Surface modified up-conversion rare earth fluorides have attracted attention in recent years. Owing to their unique optical properties they can be used for biomedical application such as bio-detection, fluorescene imaging and in drug delivery systems. Different synthesis methods which generate nano- and micro-crystals with controllable compositions have been reported. For improved control of size, shape and morphology of the particles surfactants or structure directing agents are used. In this work PEG or PVP capped NaYF4 particles were synthesized using hydro/solvo-thermal synthesis at 200 ºC (3h). Their structural, morphological and luminescence characteristics have been studied based on X-ray powder diffractometry (XRPD), Fourier transform infrared spectroscopy (FTIR), energy dispersive spectroscopy (EDS), scanning and transmission electron microscopy (SEM/TEM) and photoluminescence measurements. Both polymers proved to be a good structure directing agents enabling generation of the well crystalline polymer coated upconverting particles with efficient emissions in visible spectrum. It was shown that generation of the hexagonal P63/m β- NaYF4:Yb3+/Er3+ phase with the most efficient green emission (CIE 0.31, 0.66) is enhanced when PVP is used during synthesis, while formation of the cubic Fm-3m α-NaYF4:Yb3+/Er3+ phase that has a yellowish spectral output (CIE 0.41, 0.56) was observed in the particles produced in the presence of PEG. Increase of the luminescence intensity was achieved with additional particles annealing in argon atmosphere at 400 ºC (5h).",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "Program and the Book of Abstracts / Fourteenth Young Researchers' Conference Materials Sciences and Engineering, December 9-11, 2015, Belgrade, Serbia",
title = "Hydro/solvo-thermal synthesis of surface modified NaYF4 co-doped Yb3+/Er3+ up-conversion nanoparticles",
pages = "20-20"
}
Dinić I, Mančić L, Rabanal ME, Milošević O. Hydro/solvo-thermal synthesis of surface modified NaYF4 co-doped Yb3+/Er3+ up-conversion nanoparticles. Program and the Book of Abstracts / Fourteenth Young Researchers' Conference Materials Sciences and Engineering, December 9-11, 2015, Belgrade, Serbia. 2015;:20-20
Dinić, I., Mančić, L., Rabanal, M. E.,& Milošević, O. (2015). Hydro/solvo-thermal synthesis of surface modified NaYF4 co-doped Yb3+/Er3+ up-conversion nanoparticles.
Program and the Book of Abstracts / Fourteenth Young Researchers' Conference Materials Sciences and Engineering, December 9-11, 2015, Belgrade, SerbiaBelgrade : Institute of Technical Sciences of SASA., null, 20-20.
