Synthesis and characterization of nanoporous NaYF4:Yb3+, Tm3+@SiO2 nanocomposites

	Synthesis and characterization of nanoporous NaYF4:Yb3+, Tm3+@SiO2 nanocomposites
其他题名	论文其他题名
	Liu L. N.; Li B.; Qin R. F.; Zhao H. F.; Ren X. G.; Su Z. M.
	2010
发表期刊	Solid State Sciences
ISSN	1293-2558
卷号	12 期号:3 页码:345-349
摘要	Novel upconversion nanocomposites with nanoporous structure were presented in this paper. Silica-coated cubic NaYF4:Yb3+, Tm3+ nanoparticles were first prepared. After annealing, monodisperse cubic/hexagonal mixed phases NaYF4:Yb3+, Tm3+@SiO2 nanoparticles were obtained, and the NaYF4:Yb3+, Tm3+ cores became nanoporous. To the best of our knowledge, the nanoporous structure in NaYF4:Yb3+, Tm3+@SiO2 nanocomposites was observed for the first time. They demonstrate increased upconversion emission compared with unannealed dense NaYF4:Yb3+, Tm3+ nanoparticles due to the appearance of the hexagonal NaYF4:Yb3+, Tm3+. The silica shell not only makes the nanocomposites possess bio-affinity but also protects the NaYF4:Yb3+, Tm3+ cores from aggregating and growing up. Thus the upconversion, nanoporous and bio-affinity properties were combined into one single nanoparticle. The nanocomposites have been characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), small angle X-ray diffraction (SAXRD) and emission spectroscopy. These multifunctional nanocomposites are expected to find applications in biological fields, such as biolabels, drug storage and delivery. (C) 2009 Elsevier Masson SAS. All rights reserved.
收录类别	SCI ; EI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/26148
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Liu L. N.,Li B.,Qin R. F.,et al. Synthesis and characterization of nanoporous NaYF4:Yb3+, Tm3+@SiO2 nanocomposites[J]. Solid State Sciences,2010,12(3):345-349.
APA	Liu L. N.,Li B.,Qin R. F.,Zhao H. F.,Ren X. G.,&Su Z. M..(2010).Synthesis and characterization of nanoporous NaYF4:Yb3+, Tm3+@SiO2 nanocomposites.Solid State Sciences,12(3),345-349.
MLA	Liu L. N.,et al."Synthesis and characterization of nanoporous NaYF4:Yb3+, Tm3+@SiO2 nanocomposites".Solid State Sciences 12.3(2010):345-349.

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