High-efficient phosphorescent iridium(III) complexes with benzimidazole ligand for organic light-emitting diodes: Synthesis, electrochemistry and electroluminescent properties

被引：15

作者：

Li, Chunxiang ^{[2
]}

Zhang, Guanghui ^{[1
]}

Shih, Hung-Hsin ^{[4
]}

Jiang, Xiaoqing ^{[1
]}

Sun, Peipei ^{[1
]}

Pan, Yi ^{[3
]}

Cheng, Chien-Hong ^{[4
]}

机构：

[1] Nanjing Normal Univ, Coll Chem & Environm Sci, Jiangsu Key Lab Biofunct Mat, Nanjing 210097, Jiangsu, Peoples R China

[2] Qingdao Univ Sci & Technol, Coll Chem & Mol Engn, Qingdao 266042, Peoples R China

[3] Nanjing Univ, Sch Chem & Chem Engn, Nanjing 210093, Peoples R China

[4] Tsinghua Univ, Dept Chem, Hsinchu 300, Taiwan

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 2009年 / 694卷 / 15期

基金：

中国国家自然科学基金;

关键词：

Electrophosphorescence; Ir-complex; Synthesis; OLEDs; CYCLOMETALATED IR(III) COMPLEXES; ANCILLARY LIGANDS; EMISSION; EMITTERS; DEVICES; BLUE; STATES; OLEDS;

D O I：

10.1016/j.jorganchem.2009.03.022

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Two phosphorescent complexes Ir(FFBI)(2)(pmp) and Ir(FFBI)(2)(pti) based on cyclometalated ligand 1-(4-fluorobenzyl)-2-(4-fluorophenyl)-1H-benzo[d]imidazole (FFBI) and ancillary ligands 2-(phenyliminomethyl) phenol (pmp) or 3-(pyridin-2-yl)-4,5,6,7-tetrahydro-2H-indazole (pti) were synthesized. The single crystal of Ir(FFBI)(2)(pmp) was obtained. The light emitting and electrochemical properties of these complexes were studied. The electroluminescent devices based on these two complexes with the structure of ITO/NPB (40 nm)/Ir complex: CBP (30 nm)/BCP (15 nm)/Alq (30 nm)/LiF (1 nm)/Al (100 nm) emitted cyan color, with high brightness and efficiencies. The maximum external quantum efficiencies reached to 6.8% and 11.6%, respectively. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：2415 / 2420

页数：6

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