Synthesis of cationic iridium (III) complexes with high quantum yield via enhancing the steric hindrance of ligands

GG Shan, HB Li, ZC Mu, DX Zhu, ZM Su…

Index: Shan, Guo-Gang; Li, Hai-Bin; Mu, Zhong-Cheng; Zhu, Dong-Xia; Su, Zhong-Min; Liao, Yi Journal of Organometallic Chemistry, 2012 , vol. 702, p. 27 - 35

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Citation Number: 15

Abstract

A series of cationic Ir (III) complexes 1a–4a functionalized with carbazole-9-yl-n-butyl group (CZB) were designed and synthesized. An investigation of their photophysical properties showed that the attachment of CZB moiety into the complexes resulted in large improvement in the photoluminescence quantum yield (PLQY) of solid film although the emission spectra and excited-state character presented little change compared with those of the parent ...