Synthesis and photoluminescent properties of Eu (III) complexes with fluorinated β-diketone and nitrogen heterocyclic ligands

被引：53

作者：

Wang, Dan ^{[1
]}

Luo, Zheng ^{[1
]}

Liu, Zhao ^{[1
]}

Wang, Dunjia ^{[1
]}

Fan, Ling ^{[1
]}

Yin, Guodong ^{[1
]}

机构：

[1] Hubei Normal Univ, Hubei Key Lab Pollutant Anal & Reuse Technol, Coll Chem & Chem Engn, Hubei Collaborat Innovat Ctr Rare Met Chem, Huangshi 435002, Peoples R China

来源：

DYES AND PIGMENTS | 2016年 / 132卷

基金：

中国国家自然科学基金;

关键词：

Europium (III) complex; Fluorinated beta-diketone; Heterocyclic nitrogen donors; Photoluminescence property; Quantum efficiency; Judd-Ofelt intensity parameters; EU(III) COMPLEXES; LUMINESCENT PROPERTIES; EUROPIUM COMPLEXES; LIFETIME; BEHAVIOR; ADDUCTS;

D O I：

10.1016/j.dyepig.2016.05.026

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Two fluorinated beta-diketones and their six europium (III) complexes using 2,2-dipyridine, 1,10-phenanthroline or 4'-phenyl-terpyridine as the secondary ligand were synthesized and characterized. The photoluminescence behavior for these complexes was investigated in solid state in detail. Based on the emission spectra and luminescence decay curves of these complexes in solid state, the Judd-Ofelt intensity parameters (Omega(t)), lifetime (tau) and luminescence quantum efficiency (eta) were determined. The Omega(2) values indicate that the europium (III) ion is in a highly polarizable chemical environment in these complexes. Europium (III) complexes with the secondary ligands 2,2-dipyridine or 1,10-phenanthroline exhibited much better photoluminescence properties than complexes With the secondary ligand 4'-phenyl-terpyridine. Especially, europium (III) complexes of 4,4,4-trifluoro-1-(4-fluorophenyl)-butane-1,3-dione containing the secondary ligands 2,2-dipyridine or 1,10-phenanthroline showed a longer lifetime (tau = 0.799 and 0.826 ms, respectively) and a higher luminescence quantum efficiency (eta = 56.5 and 56.1, respectively) among these complexes. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：398 / 404

页数：7

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