文献类型：期刊文献

英文题名：Luminescent properties of encapsulation of europium complex into meso-structured silica monoliths

作者：Chen, Yu[1];Chen, Qi[1,2];Song, Li[2];Li, Hui-ping[2];Hou, Feng-zhen[2]

机构：[1]E China Univ Sci & Technol, Key Lab Ultrafine Mat, Minist Educ, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Dept Inorgan Mat, Shanghai 200237, Peoples R China

年份：2009

卷号：129

期号：8

起止页码：867

外文期刊名：JOURNAL OF LUMINESCENCE

收录：;EI(收录号：20092212095927);WOS:【SCI-EXPANDED(收录号:WOS:000267298800019)】；

基金：The authors would like to thank financial support by Shanghai Leading Academic

语种：英文

外文关键词：Sol-gel; Meso-structured; Monolith; Emission quantum efficiency; Lifetime

摘要：Meso-structured silica monoliths using PEG (PEG = polyethylene glycol) as a low-cost template and synthesized via sol-gel methods were used as host materials for incorporation of europium complexes Eu(BA)(3)Phen (BA = benzoic acid and Phen = 1,10-phenanthroline). The meso-structured silica was silylated by 3-aminopropyltriethoxysilane (APTES) or 3-glycidoxypropyltrimethoxysilane (GPTMS) before wet impregnation. Samples were characterized by BET, diffuse reflectance (DR) spectroscopy, infrared spectroscopy and fluorescence measurements. The results showed that the emission quantum efficiency of GPTMS silylated meso-structured silica with larger pore size was up to 44.6%. Also, the lifetime measurement showed the complex encapsulated in this rigid matrix had longer lifetime than the pure complex in solid or liquid. (C) 2009 Elsevier B.V. All rights reserved.