[铕-镧-邻氨基苯甲酸-2,2'-联吡啶配合物的红外光谱和荧光光谱研究]

[Studies on the infrared and fluorescence spectra of europium-lanthanum-o-aminobenzoate-2,2'-dipyridyl complexes].

作者信息

Zhao Y, Zhao F

机构信息

College of Chemistry and Chemical Engineering, Inner Mongolia University, 010021 Hohhot.

出版信息

Guang Pu Xue Yu Guang Pu Fen Xi. 2000 Dec;20(6):822-4.

PMID:12938481

Abstract

A series of mixed rare earth complexes of europium and lanthanum with o-aminobenzoate and 2,2-dipyridyl were synthesized by the reaction of EuCl3 and LaCl3 with o-aminobenzoate and 2,2' dipyridyl in solution. Their infrared and fluorescence spectra were investigated. The results showed that the chemical bonds have been formed between the two ligands with rare-earth ions. The fluorescence spectra excited by 343 nm UV-light indicated that the emission intensity for europium ions can be greatly enhanced if a part of europium ions in europium complexes were substituted by lanthanum ions. This paper discussed the luminance, mechanism of too.

摘要

通过 EuCl₃ 和 LaCl₃ 与邻氨基苯甲酸酯以及 2,2'-联吡啶在溶液中反应，合成了一系列铕和镧与邻氨基苯甲酸酯及 2,2'-联吡啶的混合稀土配合物。研究了它们的红外光谱和荧光光谱。结果表明，两种配体与稀土离子之间形成了化学键。343 nm 紫外光激发的荧光光谱表明，如果铕配合物中的部分铕离子被镧离子取代，铕离子的发射强度会大大增强。本文还讨论了其发光亮度及机理。