Multicolor emission from terpyridine-lanthanide ion complexes encapsulated in nanocomposite silica/poly(ethylene glycol) sol-gel matrices

被引：24

作者：

Bekiari, V ^{[1
]}

Lianos, P ^{[1
]}

机构：

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

来源：

JOURNAL OF LUMINESCENCE | 2003年 / 101卷 / 1-2期

关键词：

terpyridine; lanthanide; sol-gel;

D O I：

10.1016/S0022-2313(02)00405-2

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Complex formation between Terpyridine and trivalent metal cations, namely In3+, Eu3+ and Tb3+ have been studied in different environments. Blue, green and red emission can be obtained from Terpyridine-Europium ion complexes, stabilized by poly(ethylene glycol) (PEG) oligomers in nanocomposite organic/inorganic matrices, by single Near-UV excitation in the ligand absorption band. Nanocomposite matrices have been synthesized by the sol-gel method. Single color, efficient photoluminescence can be also obtained by varying matrix composition. This behavior is the result of combination of three different physicochemical mechanisms: complex formation between Terpyridine and metal cations in coordination with PEG; ligand cis-trans or trans-trans transformations; and energy transfer from excited ligand to lanthanide ions. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：135 / 140

页数：6

共 23 条

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