A dibenzofuran-based host material for blue electrophosphorescence

被引：217

作者：

Vecchi, Paul A. ^{[1
]}

Padmaperuma, Asanga B. ^{[1
]}

Qiao, Hong ^{[1
]}

Sapochak, Linda S. ^{[1
]}

Burrows, Paul E. ^{[1
]}

机构：

[1] Pacific NW Natl Lab, Div Sci Mat, Richland, WA 99352 USA

来源：

ORGANIC LETTERS | 2006年 / 8卷 / 19期

关键词：

D O I：

10.1021/ol0614121

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Dibenzofuran (DBF) is converted to a vacuum-sublimable, electron-transporting host material via 2,8-substitution with diphenylphosphine oxide moieties. Close d-d stacking and the inductive influence of PdO moieties impart favorable electron-transport properties without lowering the triplet energy. A maximum external quantum efficiency of 10.1% and luminance power efficiency of 25.9 Im/W are realized using this material as the host for the blue-green electrophosphorescent molecule, iridium(III) bis(4,6-(di-fluorophenyl)pyridinato-N,C-2')picolinate (Flrpic).

引用

页码：4211 / 4214

页数：4

共 13 条

[1] Nearly 100% internal phosphorescence efficiency in an organic light-emitting device [J].

Adachi, C ;

Baldo, MA ;

Thompson, ME ;

Forrest, SR .

JOURNAL OF APPLIED PHYSICS, 2001, 90 (10) :5048-5051

[2] Benzofuran trimers for organic electroluminescence [J].

Anderson, S ;

Taylor, PN ;

Verschoor, GLB .

CHEMISTRY-A EUROPEAN JOURNAL, 2004, 10 (02) :518-527

[3] ARYLENEBIS(TERTIARY PHOSPHINES) AND -(PHOSPHINIC ACIDS) [J].

BALDWIN, RA ;

CHENG, MT .

JOURNAL OF ORGANIC CHEMISTRY, 1967, 32 (05) :1572-&

[4] Ultraviolet electroluminescence and blue-green phosphorescence using an organic diphosphine oxide charge transporting layer [J].

Burrows, PE ;

Padmaperuma, AB ;

Sapochak, LS ;

Djurovich, P ;

Thompson, ME .

APPLIED PHYSICS LETTERS, 2006, 88 (18)

[5]

DAVYDOV SN, 1981, RUSS J PHYS CHEM, V55, P444

[6]

FIE Z, 2003, ANGEW CHEM INT EDIT, V42, P783

[7] Efficient, deep-blue organic electrophosphorescence by guest charge trapping [J].

Holmes, RJ ;

D'Andrade, BW ;

Forrest, SR ;

Ren, X ;

Li, J ;

Thompson, ME .

APPLIED PHYSICS LETTERS, 2003, 83 (18) :3818-3820

[8] Current status of electrophosphorescent device stability [J].

Kwong, RC ;

Weaver, MS ;

Lu, MHM ;

Tung, YJ ;

Chwang, AB ;

Zhou, TX ;

Hack, M ;

Brown, JJ .

ORGANIC ELECTRONICS, 2003, 4 (2-3) :155-164

[9] New charge transporting host material for short wavelength organic electrophosphorescence: 2,7-bis(diphenylphosphine oxide)-9,9-dimethylfluorene [J].

Padmaperuma, AB ;

Sapochak, LS ;

Burrows, PE .

CHEMISTRY OF MATERIALS, 2006, 18 (09) :2389-2396

[10]

Pinion J. P., 1971, Journal of Luminescence, V3, P245, DOI 10.1016/0022-2313(71)90062-7

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