Improvement of the emission properties of sol-gel silica matrices containing Eu3+ in the presence of poly(ethylene glycol)-200

被引：32

作者：

Bekiari, V

Pistolis, G

Lianos, P ^{[1
]}

机构：

[1] Univ Patras, Engn Sci Dept, Patras 26500, Greece

[2] NCSR Demokritos, Inst Phys Chem, GR-15310 Athens, Greece

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 1998年 / 226卷 / 1-2期

关键词：

D O I：

10.1016/S0022-3093(97)00492-4

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Composite organic/inorganic sol-gel matrices have been made with tetramethoxysilane and poly(ethylene glycol)-200, incorporating Eu3+ ions. Polyethylene oxide oligomers match well with silica giving solid transparent gels. Europium ions are associated with the organic phase and they are protected from quenching mechanisms usually present in silica matrices. Thus, emission intensity and decay time increased and spectral bandwidth decreased in the presence of the oligomer. Increase of the decay time was also obtained with organic cationic dyes in the presence of the oligomer. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：200 / 203

页数：4

共 11 条

[1]

BEKIARI V, 1997, UNPUB P 9 INT WORKSH

[2]

Bettinelli M, 1996, J NON-CRYST SOLIDS, V201, P211, DOI 10.1016/0022-3093(96)00134-2

[3] UV VISIBLE SPECTROSCOPY STUDIES OF NI(II) COORDINATION IN POLY(ETHYLENE GLYCOL) [J].