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- W2001927040 endingPage "11056" @default.
- W2001927040 startingPage "11056" @default.
- W2001927040 abstract "Herein we designed and synthesized a series of cationic iridium(III) complexes with a phenylbenzoimidazole-based cyclometalated ligand, containing different numbers of carbazole moieties from zero to three (complexes 1–4). The photophysical and electrochemical properties of this series have been systematically investigated. The complexes exhibit strong luminescence in both solution and in neat films, as well as excellent redox reversibility. Introducing carbazole groups into the complexes is found to lead to substantially enhanced photoluminescence quantum efficiency in the neat film, but has little effect on the emitting color and excited-state characteristics as supported by density functional theory (DFT) results. DFT calculations also suggest that functionalized complexes 2–4 reveal better hole-transporting properties than 1. More importantly, all complexes effectively reduce the degradation reaction to some extent in metal-centered (3MC) excited-states, demonstrating their stability. Further studies indicate that restriction of opening of the structures in the 3MC state is caused by the unique molecular conformation of the phenylbenzoimidazole ligand, which is first demonstrated here in cationic iridium(III) complexes without intramolecular π–π stacking. These results presented here would provide valuable information for designing and synthesizing highly efficient and stable cationic iridium(III) complexes suitable for the optical devices." @default.
- W2001927040 created "2016-06-24" @default.
- W2001927040 creator A5008881616 @default.
- W2001927040 creator A5013189975 @default.
- W2001927040 creator A5031159287 @default.
- W2001927040 creator A5041117647 @default.
- W2001927040 creator A5051319200 @default.
- W2001927040 creator A5056997488 @default.
- W2001927040 date "2013-01-01" @default.
- W2001927040 modified "2023-10-17" @default.
- W2001927040 title "Enhancing the luminescence properties and stability of cationic iridium(iii) complexes based on phenylbenzoimidazole ligand: a combined experimental and theoretical study" @default.
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