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Synthesis, characterization, and biological application of size-controlled nanocrystalline NaYF4 : Yb,Er infrared-to-visible up-conversion phosphors
Yi, GS; Lu, HC; Zhao, SY; Yue, G; Yang, WJ; Chen, DP; Guo, LH
2004
Source PublicationNANO LETTERS
Volume4Issue:11Pages:2191-2196
AbstractNanocrystalline infrared-to-visible up-conversion phosphors, ytterbium and erbium co-doped sodium yttrium fluoride, were synthesized. Spherical particles with narrow size distribution were prepared by a co-precipitation method in the presence of ethylenediaminetetraacetic acid (EDTA). Particles of controlled size in the range of 37 to 166 nm diameter were obtained by adjusting the molar ratio of EDTA to total lanthanides. Although the as-prepared nanoparticles emit very weak up-conversion fluorescence when excited by infrared light, the emission was enhanced by up to 40-fold after they were annealed at temperatures between 400 and 600 degreesC. By comparison with the bulk phosphor, the luminescence efficiency of the nanoparticle was estimated to be 1%. Factors affecting the particle size and their up-conversion fluorescence intensity were investigated by various microscopic and spectroscopic techniques. Preliminary results demonstrated the nanoparticles as promising up-converting fluorescence labels in the detection of biological interactions.
Department环境化学与生态毒理学国家重点实验室
DOI10.1021/nl048680h
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS IDWOS:000225115700022
Citation statistics
Cited Times:792[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/23489
Collection环境化学与生态毒理学国家重点实验室
Recommended Citation
GB/T 7714
Yi, GS,Lu, HC,Zhao, SY,et al. Synthesis, characterization, and biological application of size-controlled nanocrystalline NaYF4 : Yb,Er infrared-to-visible up-conversion phosphors[J]. NANO LETTERS,2004,4(11):2191-2196.
APA Yi, GS.,Lu, HC.,Zhao, SY.,Yue, G.,Yang, WJ.,...&Guo, LH.(2004).Synthesis, characterization, and biological application of size-controlled nanocrystalline NaYF4 : Yb,Er infrared-to-visible up-conversion phosphors.NANO LETTERS,4(11),2191-2196.
MLA Yi, GS,et al."Synthesis, characterization, and biological application of size-controlled nanocrystalline NaYF4 : Yb,Er infrared-to-visible up-conversion phosphors".NANO LETTERS 4.11(2004):2191-2196.
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