Influence of polyhedral oligomeric silsesquioxanes (POSS) on blue light-emitting materials for OLED
作者:Tianfu Zhang、Jinze Wang、Manxi Zhou、Li Ma、Guangzhong Yin、Guangxin Chen、Qifang Li
DOI:10.1016/j.tet.2013.11.082
日期:2014.4
By using Heck polycondensation, we have synthesized carbazole-based alt-copolymers tethered with polyhedral oligomeric silsesquioxanes (POSS), which had well-defined architectures, similar polymerization degrees and the different contents of POSS. The effect of POSS content and the length of the side chain containing FOSS on the electroluminescence properties of these polymers were investigated. POSS particles in these alt-copolymers showed excellent dispersity and prevented the interchain aggregation of polymers in film state well. Besides, POSS benefited charge balance by increasing the electron current density, which led to a higher luminance and current efficiency, as well as purer blue light-emitting. (C) 2014 Elsevier Ltd. All rights reserved.