Synthesis, structural characterization and luminescence studies of a novel europium(III) complex [Eu(DBM)3(TPTZ)] (DBM:dibenzoylmethanate;: TPTZ:2,4,6-tri(2-pyridyl)-1,3,5-triazine)

被引：56

作者：

De Silva, CR ^{[1
]}

Wang, JF ^{[1
]}

Carducci, MD ^{[1
]}

Rajapakshe, SA ^{[1
]}

Zheng, ZP ^{[1
]}

机构：

[1] Univ Arizona, Dept Chem, Tucson, AZ 85721 USA

来源：

INORGANICA CHIMICA ACTA | 2004年 / 357卷 / 02期

基金：

美国国家科学基金会;

关键词：

europium complexes; X-ray crystallography; dibenzoylmethane; 2,4,6-tri(2-pyridyl)-1,3,5-triazine; luminescence property;

D O I：

10.1016/j.ica.2003.08.006

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A novel Eu(III) complex featuring three dibenzoylmethanate (DBM) ligands and a Lewis base ligand 2,4,6-tri(2-pyridyl)-1,3,5-triazine (TPTZ) was synthesized. This novel complex was characterized by H-1 NMR, FAB-MS, and elemental analyses. The structure of the complex was established by single crystal X-ray diffraction. The nonacoordinate europium ion features six oxygen atoms of the three DBM ligands and three nitrogen atoms from the TPTZ ligand, forming a distorted monocapped square antiprism. Spectroscopic studies revealed that the electronic absorption of the complex is essentially ligand-based, while the emission is characteristic of a Eu(III) ion. It is concluded that the metal-centered red emission is promoted by the ligand-assisted energy transfer, namely the antenna effects. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：630 / 634

页数：5

共 17 条

[1] MECHANISM AND RATE OF INTRAMOLECULAR ENERGY TRANSFER PROCESS IN RARE-EARTH CHELATES [J].