Synthesis and Luminescence Properties of Lanthanide Complexes of a Novel Polyaminopolycarboxylate Ligand

被引：6

作者：

Tang, Chang-quan ^{[1
]}

Tang, Rui-ren ^{[1
]}

Tang, Chun-hua ^{[1
]}

Zeng, Zhi-wen ^{[1
]}

机构：

[1] Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China

来源：

BULLETIN OF THE KOREAN CHEMICAL SOCIETY | 2010年 / 31卷 / 05期

基金：

中国博士后科学基金;

关键词：

Synthesis; Pyridine; Lanthanide complexes; Luminescence; FLUORESCENCE PROPERTIES; TB(III) COMPLEXES; SENSITIVITY; EU(III); PROBES; IONS;

D O I：

10.5012/bkcs.2010.31.5.1283

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A novel polyaminopolycarboxylate ligand with many coordination sites, N,N,N-1,N-1,N-2,N-2-[(2,4,6-tri(aminomethyl)pyridine]hexakis(acetic acid) (TPHA), was designed and synthesized and its lanthanide complexes Na6Tb2(TPHA)Cl-6. 14H(2)O, Na6Eu2(TPHA)Cl-6.8H(2)O, Na6Gd2(TPHA)Cl-6.11H(2)O and Na6Sm2(TPHA)Cl-6.9H(2)O were successfully prepared. The ligand and the complexes were characterized by elemental analysis, IR, mass, NMR and TG-DTA. The TG-DTA studies indicated that the complexes had a high thermal stability, whose initial decomposition temperature was over 270 degrees C. The luminescence properties of the complexes in solid state were investigated and the results suggested that Tb3+ and Eu3+ ions could be sensitized efficiently by the ligand, especially the Tb(III) complex displayed a very strong luminescence intensity (>10000) and only displayed characteristic metal-centered luminescence. Also, the correlative comparison between the structure of ligand and luminescence properties showed how the number of the coordination atoms of ligand can be a prominent factor in the effectiveness of ligand-to-metal energy transfer.

引用

页码：1283 / 1288

页数：6

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