Novel luminescent lanthanide complexes covalently linked to a terpyridine-functionalized silica network

被引：31

作者：

Tong, Bi-Hai ^{[1
]}

Wang, Shuan-Jin ^{[1
]}

Hao, Han ^{[1
]}

Ling, Fu-Ri ^{[1
]}

Meng, Yue-Zhong ^{[1
]}

Wang, Biao ^{[1
]}

机构：

[1] Sun Yat Sen Univ, State Key Lab Optoelect Mat & Technol, Inst Optoelect & Funct Composite Mat, Guangzhou 510275, Peoples R China

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2007年 / 191卷 / 01期

基金：

中国国家自然科学基金;

关键词：

terpyridine; lanthanides; luminescence; thiol-ene photopolymerization; organic-inorganic hybrid materials;

D O I：

10.1016/j.jphotochem.2007.04.005

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Novel luminescent organic-inorganic hybrid materials consisting of lanthanide(Eu3+ Tb3+) complexes covalently bonded to a silica-based network have been obtained by a sol-gel approach. A new monomer has been synthesized by the thiol-ene photopolymerization between gamma-mercaptopropyltrimethoxysilane and 4-allytoxy-2,2':6',2 ''-terpyridine. The monomer is afterward submitted to complexation with lanthanide ions and used as the siloxane network precursor. FT-IR, DR, SEM, luminescence spectra and decay analysis, as well as luminescence quantum yields, were used to characterize the obtained hybrid materials. Excitation at the ligand absorption wavelength (333 nm) resulted in strong emission of the lanthanide ions: Eu3+ D-5(0)-F-7(J) (J= 0-4) and Tb3+ D-5(4)-F-7(J) (J 6, 5, 4, 3) emission lines due to efficient energy transfer from the ligands to the lanthanide ions. When the Eu3+ and Tb3+ ions were incorporated into the same hybrid material, only the simple addition spectra from the two metal centers was observed, which indicated bimetallic complex was not formed. (c) 2007 Published by Elsevier B.V.

引用

页码：74 / 79

页数：6

共 37 条

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