Non-doped blue fluorescent emitting materials with donor-π-acceptor-π-donor structures based 1,2,4-triazole/carbazole derivatives

Yang Tingting,Di Zhang,Yaping Zhao,Huixia Xu,Wang Hua,Zhixiang Gao,Wenshan Qu,Xu Bingshe

Journal of Photochemistry and Photobiology A: Chemistry（2020）

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摘要

•Two blue emitters based 1,2,4-triazole group with photoluminescent peaks at 425 nm were designed and synthesized.•They can achieve the reverse intersystem crossing T3→S2 processes.•The non-doped device based 2pCzTAZ exhibited deep-blue emission with CIE coordinates (0.16, 0.08).

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关键词

Deep blue emission,1,2,4-Triazole,Bipolar materials,Exciton utilization efficiency

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