A promising phosphorescent iridium complex with fluorine substituents: Synthesis, crystal structure, photo- and electro-luminescence performance

被引：8

作者：

Cui, Xiao ^{[1
,2
]}

Zhang, He Ming ^{[2
]}

Wu, Tie Feng ^{[2
]}

Li, Mei ^{[1
]}

机构：

[1] Xian Technol Univ, Sch Comp Sci & Engn, Xian 710032, Peoples R China

[2] Xidian Univ, Key Lab Wide Band Gap Semicond Mat & Devices, Sch Microelect, Xian 710071, Peoples R China

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2011年 / 82卷 / 01期

关键词：

Iridium complex; Photoluminescence; Electroluminescence; Crystal; EFFICIENT; EMISSION; EMITTERS;

D O I：

10.1016/j.saa.2011.07.014

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

In this paper, we report a phosphorescent Ir(III) emitter of Ir(acac-F6)(F-BT)(2), where acac-F6 = 1,1,1,5,5,5-hexafluoropentane-2,4-dione and F-BT = 2-(2-fluorophenyl)benzo[d]thiazole, including its crystal structure, electronic nature, photophysical characteristics, thermal and electrochemical properties. Data suggest that Ir(acac-F6)(F-BT)(2) is a promising emitter with high quantum yield of 0.19 and good thermal stability, along with its proper energy levels for charge carrier transportation. Electroluminescence (EL) devices using Ir(acac-F6)(F-BT)(2) as emitter are also fabricated, and their electroluminescence performances are investigated in detail. The optimal EL device shows a maximum luminance of 27,000 cd/cm(2) and a peak current efficiency of 8.7 cd/A. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：126 / 131

页数：6

共 18 条

[1] Highly efficient phosphorescent emission from organic electroluminescent devices [J].

Baldo, MA ;

O'Brien, DF ;

You, Y ;

Shoustikov, A ;

Sibley, S ;

Thompson, ME ;

Forrest, SR .

NATURE, 1998, 395 (6698) :151-154

[2] Synthesis and characterization of phosphorescent cyclometalated platinum complexes [J].

Brooks, J ;

Babayan, Y ;

Lamansky, S ;

Djurovich, PI ;

Tsyba, I ;

Bau, R ;

Thompson, ME .

INORGANIC CHEMISTRY, 2002, 41 (12) :3055-3066

[3]

Cambot L, 2008, COORDIN CHEM REV, V252, P2572

[4]

CHE GB, 2006, APPL PHYS LETT, V89

[5] High-efficiency red-light emission from polyfluorenes grafted with cyclometalated iridium complexes and charge transport moiety [J].

Chen, XW ;

Liao, JL ;

Liang, YM ;

Ahmed, MO ;

Tseng, HE ;

Chen, SA .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (03) :636-637

[6] New iridium complexes as highly efficient orange-red emitters in organic light-emitting diodes [J].

Duan, JP ;

Sun, PP ;

Cheng, CH .

ADVANCED MATERIALS, 2003, 15 (03) :224-+

[7] Platinum-functionalized random copolymers for use in solution-processible, efficient, near-white organic light-emitting diodes [J].

Furuta, PT ;

Deng, L ;

Garon, S ;

Thompson, ME ;

Fréchet, JMJ .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (47) :15388-15389

[8] New, efficient electroluminescent materials based on organometallic Ir complexes [J].

Grushin, VV ;

Herron, N ;

LeCloux, DD ;

Marshall, WJ ;

Petrov, VA ;

Wang, Y .

CHEMICAL COMMUNICATIONS, 2001, (16) :1494-1495

[9] Highly phosphorescent bis-cyclometalated iridium complexes containing benzoimidazole-based ligands [J].

Huang, WS ;

Lin, JT ;

Chien, CH ;

Tao, YT ;

Sun, SS ;

Wen, YS .

CHEMISTRY OF MATERIALS, 2004, 16 (12) :2480-2488

[10] Syntheses, structural characterization, and first electroluminescent properties of mono-cyclometalated platinum(II) complexes with greater than classical π-π stacking and Pt-Pt distances [J].

Ionkin, AS ;

Marshall, WJ ;

Wang, Y .

ORGANOMETALLICS, 2005, 24 (04) :619-627

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