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Synthesis of NaYF(4):Yb(3+), Er(3+ )upconversion nanoparticles in normal microemulsions
An interface-controlled reaction in normal microemulsions (water/ethanol/sodium oleate/oleic acid/n-hexane) was designed to prepare NaYF(4):Yb(3+), Er(3+ )upconversion nanoparticles. The phase diagram of the system was first studied to obtain the appropriate oil-in-water microemulsions. Transmission...
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Springer
2011
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3212077/ https://www.ncbi.nlm.nih.gov/pubmed/21968102 http://dx.doi.org/10.1186/1556-276X-6-539 |
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author | Shan, Shu-Nan Wang, Xiu-Ying Jia, Neng-Qin |
author_facet | Shan, Shu-Nan Wang, Xiu-Ying Jia, Neng-Qin |
author_sort | Shan, Shu-Nan |
collection | PubMed |
description | An interface-controlled reaction in normal microemulsions (water/ethanol/sodium oleate/oleic acid/n-hexane) was designed to prepare NaYF(4):Yb(3+), Er(3+ )upconversion nanoparticles. The phase diagram of the system was first studied to obtain the appropriate oil-in-water microemulsions. Transmission electron microscopy and X-ray powder diffractometer measurements revealed that the as-prepared nanoparticles were spherical, monodisperse with a uniform size of 20 nm, and of cubic phase with good crystallinity. Furthermore, these nanoparticles have good dispersibility in nonpolar organic solvents and exhibit visible upconversion luminescence of orange color under continuous excitation at 980 nm. Then, a thermal treatment for the products was found to enhance the luminescence intensity. In addition, because of its inherent merit in high yielding and being economical, this synthetic method could be utilized for preparation of the UCNPs on a large scale. |
format | Online Article Text |
id | pubmed-3212077 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2011 |
publisher | Springer |
record_format | MEDLINE/PubMed |
spelling | pubmed-32120772011-11-09 Synthesis of NaYF(4):Yb(3+), Er(3+ )upconversion nanoparticles in normal microemulsions Shan, Shu-Nan Wang, Xiu-Ying Jia, Neng-Qin Nanoscale Res Lett Nano Express An interface-controlled reaction in normal microemulsions (water/ethanol/sodium oleate/oleic acid/n-hexane) was designed to prepare NaYF(4):Yb(3+), Er(3+ )upconversion nanoparticles. The phase diagram of the system was first studied to obtain the appropriate oil-in-water microemulsions. Transmission electron microscopy and X-ray powder diffractometer measurements revealed that the as-prepared nanoparticles were spherical, monodisperse with a uniform size of 20 nm, and of cubic phase with good crystallinity. Furthermore, these nanoparticles have good dispersibility in nonpolar organic solvents and exhibit visible upconversion luminescence of orange color under continuous excitation at 980 nm. Then, a thermal treatment for the products was found to enhance the luminescence intensity. In addition, because of its inherent merit in high yielding and being economical, this synthetic method could be utilized for preparation of the UCNPs on a large scale. Springer 2011-10-03 /pmc/articles/PMC3212077/ /pubmed/21968102 http://dx.doi.org/10.1186/1556-276X-6-539 Text en Copyright ©2011 Shan et al; licensee Springer. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Nano Express Shan, Shu-Nan Wang, Xiu-Ying Jia, Neng-Qin Synthesis of NaYF(4):Yb(3+), Er(3+ )upconversion nanoparticles in normal microemulsions |
title | Synthesis of NaYF(4):Yb(3+), Er(3+ )upconversion nanoparticles in normal microemulsions |
title_full | Synthesis of NaYF(4):Yb(3+), Er(3+ )upconversion nanoparticles in normal microemulsions |
title_fullStr | Synthesis of NaYF(4):Yb(3+), Er(3+ )upconversion nanoparticles in normal microemulsions |
title_full_unstemmed | Synthesis of NaYF(4):Yb(3+), Er(3+ )upconversion nanoparticles in normal microemulsions |
title_short | Synthesis of NaYF(4):Yb(3+), Er(3+ )upconversion nanoparticles in normal microemulsions |
title_sort | synthesis of nayf(4):yb(3+), er(3+ )upconversion nanoparticles in normal microemulsions |
topic | Nano Express |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3212077/ https://www.ncbi.nlm.nih.gov/pubmed/21968102 http://dx.doi.org/10.1186/1556-276X-6-539 |
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