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

…, CC Yang, JH Lee, HH Tsai, CF Lin, CY Huang…

Index: Leung, Man-Kit; Yang, Chih-Chiang; Lee, Jiun-Haw; Tsai, Hsin-Hung; Lin, Chi-Feng; Huang, Chih-Yen; Su, Yuhlong Oliver; Chiu, Chi-Feng Organic Letters, 2007 , vol. 9, # 2 p. 235 - 238

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Citation Number: 69

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 π-π 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 ...

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