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首页> 外文期刊>Journal of Organometallic Chemistry >Iridium Complexes Embedding Rigid D-A-Type Coordinated Cores: Facile Synthesis and High-Efficiency Near-Infrared Emission in Solution-Processed Polymer Light-Emitting Diodes
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Iridium Complexes Embedding Rigid D-A-Type Coordinated Cores: Facile Synthesis and High-Efficiency Near-Infrared Emission in Solution-Processed Polymer Light-Emitting Diodes

机译：铱络合物嵌入刚性D-A型协调芯：溶液加工聚合物发光二极管的容易合成和高效近红外发射

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摘要

Two near-infrared (NIR)-emitting iridium(III) complexes of (Me-BIPz)(2)Ir(acac) and (tBu-BIPz)(2)Ir(acac), (i.e. Ir-1 and Ir-2 ) are designed and synthesized, which contain methyl and t-butyl substituted 14-phenyl-14H-benzo[a]indolo[3,2-c]phenazine (BIPz), respectively with a rigid D-A-type coordinated core. The influence of the rigid D-A skeleton and the attached groups on photoelectronic properties of iridium complexes is primarily investigated. An advanced external quantum efficiency (EQE) of 2.65% with a radiant emittance of 13057 mW Sr-1 m -2 at 746 nm is obtained in the Ir-2-doped polymer light-emitting devices. This EQE value is 1.5 times higher than that in the Ir-1-doped devices. Furthermore, this type of iridium complexes exhibits better NIR-emitting properties than most of the reported iridium complexes containing the C<^>N ligand with two coordinated aryl rings. The results indicate that the rigid coordinated core of C<^>N ligand is an effective strategy to construct high-efficiency NIR-emitting iridium complexes. (C) 2020 Elsevier B.V. All rights reserved.
机译：设计并合成了两种近红外（NIR）铱（III）配合物，分别含有甲基和叔丁基取代的14-苯基-14H-苯并[a]吲哚[3,2-c]吩嗪（BIPz），具有刚性D-a型配位核。初步研究了刚性D-A骨架和附加基团对铱配合物光电性质的影响。在掺Ir-2的聚合物发光器件中获得了2.65%的高级外量子效率（EQE），在746nm处的辐射发射度为13057mw Sr-1m-2。该EQE值是掺Ir-1器件的1.5倍。此外，这种类型的铱配合物比大多数报道的含有两个配位芳环的C<^>N配体的铱配合物具有更好的近红外发射性能。结果表明，C<^>N配体的刚性配位核是构建高效近红外发射铱配合物的有效策略。（C） 2020爱思唯尔B.V.版权所有。

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  • 来源
  • 作者

    Liu Denghui; You Caifa; Li Mengke; Wang Sai; Zhang Kai; Zhang Bin; Yu Junting; Liu Yu; Su Shi-Jian; Zhu Weiguo;

  • 作者单位

    Changzhou Univ Jiangsu Engn Lab Light Elect Heat Energy Converti Jiangsu Key Labs Environm Friendly Polymers Jiang Sch Mat Sci &

    Engn Natl Expt Demonstrat Ctr Mat S Changzhou 213164 Peoples R China;

    Changzhou Univ Jiangsu Engn Lab Light Elect Heat Energy Converti Jiangsu Key Labs Environm Friendly Polymers Jiang Sch Mat Sci &

    Engn Natl Expt Demonstrat Ctr Mat S Changzhou 213164 Peoples R China;

    South China Univ Technol State Key Lab Luminescent Mat &

    Devices Guangzhou 510640 Peoples R China;

    Changzhou Univ Jiangsu Engn Lab Light Elect Heat Energy Converti Jiangsu Key Labs Environm Friendly Polymers Jiang Sch Mat Sci &

    Engn Natl Expt Demonstrat Ctr Mat S Changzhou 213164 Peoples R China;

    Changzhou Univ Jiangsu Engn Lab Light Elect Heat Energy Converti Jiangsu Key Labs Environm Friendly Polymers Jiang Sch Mat Sci &

    Engn Natl Expt Demonstrat Ctr Mat S Changzhou 213164 Peoples R China;

    Changzhou Univ Jiangsu Engn Lab Light Elect Heat Energy Converti Jiangsu Key Labs Environm Friendly Polymers Jiang Sch Mat Sci &

    Engn Natl Expt Demonstrat Ctr Mat S Changzhou 213164 Peoples R China;

    Changzhou Univ Jiangsu Engn Lab Light Elect Heat Energy Converti Jiangsu Key Labs Environm Friendly Polymers Jiang Sch Mat Sci &

    Engn Natl Expt Demonstrat Ctr Mat S Changzhou 213164 Peoples R China;

    Changzhou Univ Jiangsu Engn Lab Light Elect Heat Energy Converti Jiangsu Key Labs Environm Friendly Polymers Jiang Sch Mat Sci &

    Engn Natl Expt Demonstrat Ctr Mat S Changzhou 213164 Peoples R China;

    South China Univ Technol State Key Lab Luminescent Mat &

    Devices Guangzhou 510640 Peoples R China;

    Changzhou Univ Jiangsu Engn Lab Light Elect Heat Energy Converti Jiangsu Key Labs Environm Friendly Polymers Jiang Sch Mat Sci &

    Engn Natl Expt Demonstrat Ctr Mat S Changzhou 213164 Peoples R China;

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  • 正文语种 eng
  • 中图分类 元素有机化合物;
  • 关键词

    Near-infrared emission; Iridium complex; Clt; ^gt; N ligand; PLEDs;

    机译：近红外排放;铱络合物;C.N配体;镀层;

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