Pure blue electroluminescent poly(aryl ether)s with dopant–host systems (pages 3911–3919)
Chunlei Bian, Guoxin Jiang, Hui Tong, Yanxiang Cheng, Zhiyuan Xie, Lixiang Wang, Xiabin Jing and Fosong Wang
Article first published online: 7 JUL 2011 | DOI: 10.1002/pola.24828
A series of arylene ether polymers (P5F-BCzVFs) containing both pentafluorene (5F) and distyrylarylene derivative (BCzVF) units in the side chains for pure blue light emission were designed and synthesized as novel EL polymers with dopant-host systems. The EL performance of the single-layer device based on P5F-BCzVFs significantly surpassed that of the host-only polymer (P5F). The best one exhibited voltage-independent and stable pure blue emission with a Commission International de L'Eclairage (CIE) coordinate of (0.15, 0.15), a maximum brightness of 3576 cd/m2, and a maximum luminous efficiencies of 2.15 cd/A.