文献类型：期刊文献

英文题名：Luminescence studies of europium chelates with increasing benzene ring substituents ligand-doped polymer

作者：Liang, Hao[1];Xie, Fang[1];Liu, Min[2];Jin, Zhen[1];Luo, Fusheng[1];Zhang, Zongyong[1]

机构：[1]Huizhou Univ, Dept Chem Engn, Huizhou 516007, Guangdong, Peoples R China;[2]E China Univ Sci & Technol, Coll Mat Sci & Engn, Shanghai 201512, Peoples R China

年份：2008

卷号：71

期号：2

起止页码：588

外文期刊名：SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY

收录：;EI(收录号：20084311657720);WOS:【SCI-EXPANDED(收录号:WOS:000261046200047)】；

基金：This work was supported by the Science Development Project of Huizhou (No. 2007P48).

语种：英文

外文关键词：Polymers; Luminescence; Europium; Chelate

摘要：The luminescence properties of four europium chelates with increasing benzene ring substituents ligand in poly(methylmethacrylate) (PMMA) have been investigated by fluorescence emission spectra and lifetime measurements. According to the fluorescence emission spectra, the Judd-Ofelt parameters Omega(2), Omega(4) of europium chelates-doped PMMA have been calculated and the radiative properties were also presented. It showed that the increase of benzene ring substituents in ligand can increase the metastable state lifetime tau(m), the luminescence quantum yield eta and the stimulated emission cross-section sigma of D-5(0) -> F-7(2) transition. (C) 2008 Elsevier B.V. All rights reserved.