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Synthesis and Characterization of Carbazole Core‐based Small Molecular‐Hole‐transporting Materials for Red Phosphorescent OLEDs
Author(s) -
Fan Jin Guo,
Kim Mi Jin,
Nguyen Quynh Pham Bao,
Braveenth Ramanaskanda,
Ko Haye Min,
Han JiHun,
Kim Gyeong Woo,
Kwon Jang Hyuk,
Chai Kyu Yun
Publication year - 2016
Publication title -
bulletin of the korean chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.237
H-Index - 59
ISSN - 1229-5949
DOI - 10.1002/bkcs.10960
Subject(s) - carbazole , biphenyl , phosphorescence , oled , materials science , thermal decomposition , core (optical fiber) , characterization (materials science) , photochemistry , nanotechnology , chemistry , organic chemistry , fluorescence , optics , physics , layer (electronics) , composite material
A series of carbazole core‐based hole‐transporting materials ( HTMs ) have been synthesized using Buchwald–Hartwig amination reaction. HTMs 7a and 7b exhibited high thermal decomposition temperatures of 400 and 380°C, respectively, without any crystalline features. Among the designed HTMs 7a–c , the device performance based on HTM 7a is the best and identical with that of the typical hole‐transporting N , N ′‐di(1‐naphthyl)‐ N , N ′‐diphenyl‐(1,1′‐biphenyl)‐4,4′‐diamine ( NPB ) material.