Conjugated and nonconjugated bipolar-transporting dinuclear europium(III) complexes involving triphenylamine and oxadiazole units: synthesis, photophysical and electroluminescent properties

被引：8

作者：

Liu, Yu ^{[1
]}

Chen, Kai ^{[1
]}

Xing, Kongqiang ^{[2
]}

Wang, Yafei ^{[1
]}

Jiang, Haigang ^{[1
]}

Deng, Xiangping ^{[1
]}

Zhu, Meixiang ^{[1
]}

Zhu, Weiguo ^{[1
]}

机构：

[1] Xiangtan Univ, Dept Chem, Key Lab Environm Friendly Chem & Applicat, Minist Educ, Xiangtan 411105, Peoples R China

[2] Qionzhou Coll, Inst Biol Sci & Technol, Wuzhishan 572200, Peoples R China

来源：

TETRAHEDRON | 2013年 / 69卷 / 23期

基金：

中国国家自然科学基金;

关键词：

Bipolar-transporting; Dinuclear europium(III) complexes; Electroluminescence; Polymer light-emitting devices; Synthesis; ELECTROCHEMICAL PROPERTIES; RED ELECTROLUMINESCENCE; HIGHLY LUMINESCENT; TERNARY COMPLEX; BETA-DIKETONE; CARBAZOLE; DIODES; LIGAND; PHOTOLUMINESCENCE; EMITTER;

D O I：

10.1016/j.tet.2013.03.092

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Two novel bipolar-transporting dinuclear europium(III) complexes incorporating both hole-transporting triphenylamine (TPA) and electron-transporting oxadiazole (OXD) units into the dual phenanthroline ligands were successfully synthesized and characterized by IR, elemental analysis, electrochemical, photophysical analysis, and thermogravimetric analysis, in which the OXD unit was attached onto TPA unit by conjugated and unconjugated linkages for the europium complex A and B, respectively. Compared with complex B, complex A exhibited higher thermal stability and quantum efficiency. A maximum brightness of 296.3 cd/m(2) at voltage of 8.5 V was obtained in the complex A-doped devices with saturated red emission using a blend of poly(vinylcarbazole) and 2-(4-biphenyl)-5-(4-tert-butyl-phenyl)-1,3,4-oxadiazole as a host matrix, which is about two-times higher than that from the complex B-doped devices with the same configuration. To best of our knowledge, this is one of the best results based on the dinuclear europium(III) complexes by spin-casting method. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：4679 / 4686

页数：8

共 38 条

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