Sensitization and Intra-molecular Energy Transfer of Eu3+ by Tb3+ in Eu-Tb Binuclear Complexes/PMMA

被引：3

作者：

Han Jing ^{[1
]}

Li Jie ^{[2
]}

机构：

[1] N Univ China, Coll Mechatron Engn, Taiyuan 030051, Peoples R China

[2] N Univ China, Coll Mat Sci & Engn, Taiyuan 030051, Peoples R China

来源：

JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION | 2011年 / 26卷 / 03期

基金：

中国国家自然科学基金;

关键词：

sensitization; energy transfer; rare-earth polymer; in-situ polymerization; ENHANCED ELECTROLUMINESCENCE; LUMINESCENCE;

D O I：

10.1007/s11595-011-0237-x

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A series of Eu0.5Tb0.5(TTA)(3)Phen/PMMA (TTA=thenoyltrifluoroacetone, Phen=phenanthroline) and Eu0.5Tb0.5(TTA)(3)Dipy/PMMA (Dipy=2,2'-dipyridyl) were prepared by in-situ polymerization. The structures of the composites were characterized by IR spectra and electron spectrum. Photoluminescence properties were investigated by UV-Vis spectra and fluorescence spectra. Meanwhile, the energy transfer models were set up. The results indicated that polymer parts were attached with the rare-earth molecular parts in the composite luminescent materials. Eu0.5Tb0.5(TTA)(3)Phen/PMMA and Eu0.5Tb0.5(TTA)(3)Dipy/PMMA emitted mostly characteristic fluorescence of europium ion and intense red fluorescence with peak wavelength at 611.8 nm and bandwidth of 10.4 nm under UV excitation at 365 nm. Fluorescence intensity of Eu0.5Tb0.5(TTA)(3)Phen/PMMA was found to be influenced with the content of MMA. The fluorescence emission of europium ions was greatly sensitized by terbium ions and the enhancement of red emission was most likely due to the energy transfer enhancement from Tb3+ to Eu3+.

引用

页码：398 / 402

页数：5

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