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Blue thermally activated delayed fluorescent emitters having a bicarbazole donor moiety

机译:蓝色热活化延迟荧光发射器具有双咔唑供体部分

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摘要

Bis(4-(9'-phenyl-9H, 9'H-[ 3,3'-bicarbazol]-9-yl) phenyl) methanone (BPBCz) and 90,9 '''-((6-phenyl-1,3,5-triazine-2,4-diyl) bis(4,1-phenylene)) bis(9-phenyl-9H, 9'-H-3,3'-bicarbazole) (TrzBCz) were investigated as thermally activated delayed fluorescent (TADF) emitters to exhibit blue emission color. A 3,3'-bicarbazole was a donor in the two TADF emitters, and benzophenone and triazine were acceptors of BPBCz and TrzBCz, respectively. Both BPBCz and TrzBCz behaved as high efficiency TADF emitters through a small singlet-triplet energy gap for the activation of delayed fluorescence. The BPBCz and TrzBCz TADF emitters offered high quantum efficiencies of 23.3% and 23.6% in the blue TADF devices.
机译:双(4-(9'-苯基-9H,9'H-[3,3'-双氨基唑] -9-基)苯基)甲基酮(BPBCZ)和90,9'' - ((6-苯基-1 研究了3,5-三嗪-2,4-二基)双(4,1-亚苯基))双(9-苯基-9H,9'-H-3,3'-双双咔唑)(TRZBCZ)作为热活化 延迟荧光(TADF)发射器表现出蓝色发光颜色。 3,3'-双咔唑是两种Tadf发射器中的供体,二苯甲酮和三嗪分别是BPBCZ和TRZBCZ的受体。 BPBCZ和TRZBCZ均通过小单态三联能能隙表现为高效TADF发射器,用于激活延迟荧光。 BPBCZ和TRZBCZ TADF发射器在蓝色TADF器件中提供了23.3%和23.6%的高量子效率。

著录项

  • 来源
    《RSC Advances》 |2016年第68期|共7页
  • 作者单位

    Sungkyunkwan Univ Sch Chem Engn 2066 Seobu Ro Suwon 440746 Gyeonggi Do South Korea;

    Sungkyunkwan Univ Sch Chem Engn 2066 Seobu Ro Suwon 440746 Gyeonggi Do South Korea;

    Sungkyunkwan Univ Sch Chem Engn 2066 Seobu Ro Suwon 440746 Gyeonggi Do South Korea;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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