Blue and Green Phosphorescent Liquid‐Crystalline Iridium Complexes with High Hole Mobility |
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| Authors: | Dr. Yafei Wang Christopher P. Cabry ManJun Xiao Dr. Louise Male Dr. Stephen J. Cowling Prof. Dr. Duncan W. Bruce Junwei Shi Prof. Weiguo Zhu Dr. Etienne Baranoff |
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| Affiliation: | 1. School of Chemistry, University of Birmingham, Birmingham;2. Department of Chemistry, Key Lab of Environment-Friendly Chemistry and Application in the Ministry of Education, Xiangtan University, Xiangtan;3. Department of Chemistry, University of York, Heslington, York |
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| Abstract: | Blue‐ and green‐emitting cyclometalated liquid‐crystalline iridium complexes are realized by using a modular strategy based on strongly mesogenic groups attached to an acetylacetonate ancillary ligand. The cyclometalated ligand dictates the photophysical properties of the materials, which are identical to those of the parent complexes. High hole mobilities, up to 0.004 cm2 V?1 s?1, were achieved after thermal annealing, while amorphous materials show hole mobilities of only approximately 10?7–10?6 cm2 V?1 s?1, similar to simple iridium complexes. The design strategy allows the facile preparation of phosphorescent liquid‐crystalline complexes with fine‐tuned photophysical properties. |
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| Keywords: | hole mobility iridium liquid crystals phosphorescence smectic phases |
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