2,2'-双（1,3,4-恶二唑-2-基）联苯的异常电化学和光物理行为，用于磷光有机发光二极管的有效电子传输主体。

The unusual electrochemical and photophysical behavior of 2,2'-bis(1,3,4-oxadiazol-2-yl)biphenyls, effective electron transport hosts for phosphorescent organic light emitting diodes.

作者信息

Leung Man-kit, Yang Chih-Chiang, Lee Jiun-Haw, Tsai Hsin-Hung, Lin Chi-Feng, Huang Chih-Yen, Su Yuhlong Oliver, Chiu Chi-Feng

机构信息

Department of Chemistry, National Taiwan University, Taipei 106, Taiwan.

出版信息

Org Lett. 2007 Jan 18;9(2):235-8. doi: 10.1021/ol062668+.

DOI:10.1021/ol062668+

PMID:17217273

Abstract

The fluorescence and phosphorescence of 2,2'-bis(5-phenyl-1,3,4-oxadiazol-2-yl)biphenyl shows good spectral matching with the absorption spectra of the MLCT1 and MLCT3 transitions of Ir(ppy)3. The red-shift of the 0-0 band in the phosphorescence at 77 K is due to the intramolecular pi-pi interactions between the oxadiazole side chains. Maximum brightness of 43,000 cd/m2 with an efficiency of 26 cd/A at 200 cd/m2 was achieved when BOBP was used as the host material for Ir(ppy)3 in the PHOLED study. [structure: see text].

摘要

2,2'-双(5-苯基-1,3,4-恶二唑-2-基)联苯的荧光和磷光与Ir(ppy)3的MLCT1和MLCT3跃迁的吸收光谱显示出良好的光谱匹配。77 K时磷光中0-0带的红移是由于恶二唑侧链之间的分子内π-π相互作用。在PHOLED研究中，当使用BOBP作为Ir(ppy)3的主体材料时，在200 cd/m2下实现了43,000 cd/m2的最大亮度和26 cd/A的效率。[结构：见正文]