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化学进展 2019, Vol. 31 Issue (8): 1116-1128 DOI: 10.7536/PC190125 前一篇   后一篇

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热活化延迟荧光聚合物及其电致发光器件

蒋云波, 李欢欢**(), 陶冶, 陈润锋**(), 黄维**()   

  1. 南京邮电大学信息材料与纳米技术研究院 有机电子与信息显示国家重点实验室培育基地 江苏省有机电子和信息显示协同创新中心 南京 210023
  • 收稿日期:2019-01-18 出版日期:2019-08-15 发布日期:2019-05-30
  • 通讯作者: 李欢欢, 陈润锋, 黄维
  • 基金资助:
    国家自然科学基金项目(21604039); 国家自然科学基金项目(21674049); 国家自然科学基金项目(21772095); 国家自然科学基金项目(21704042)
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Thermally Activated Delayed Fluorescence Polymers and Applications in Organic Light Emitting Devices

Yunbo Jiang, Huanhuan Li**(), Ye Tao, Runfeng Chen**(), Wei Huang**()   

  1. Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing University of Posts & Telecommunications, Nanjing 210023, China
  • Received:2019-01-18 Online:2019-08-15 Published:2019-05-30
  • Contact: Huanhuan Li, Runfeng Chen, Wei Huang
  • About author:
    ** E-mail: (Huanhuan Li)
    (Runfeng Chen)
    (Wei Huang)
  • Supported by:
    National Natural Science Foundation of China(21604039); National Natural Science Foundation of China(21674049); National Natural Science Foundation of China(21772095); National Natural Science Foundation of China(21704042)

热活化延迟荧光(TADF)聚合物,不仅具有小分子TADF材料高的激子利用效率特性,而且还具备分子多样性好、可溶液加工、低成本、以及易实现大面积柔性器件等诸多优势,在近几年受到广泛的关注并展现了良好的应用前景。本文从TADF聚合物分子设计原理、器件结构及发光机理出发,依据TADF聚合物的构筑方法不同,概括了其结构设计策略,详述了各种类型TADF聚合物的分子结构和光电性能及其在有机电致发光器件领域应用的研究进展,最后探讨了TADF聚合物存在的问题,并展望了其发展前景。

关键词： TADF聚合物, 分子设计, 电致发光, 有机发光二极管, 溶液加工

Thermally activated delayed fluorescence(TADF) polymers, which not only have the feature of high exciton utilization efficiency, but also possess the advantages of good molecular diversity, solution processing, low cost, and easy realization of large-area flexible devices, etc, have sparked immense attention and shown great potential in the future applications in the past few years. In this review, we start with a description of molecule design principle, device structure and luminescence mechanism of TADF polymers. Next, the structural modification strategies of TADF polymers are summarized according to the different construction strategies and the molecular structure and optoelectronics properties of different types of TADF polymers with a particular emphasis on the recent advances in organic light emitting diodes are illustrated. Finally, the current problems of TADF polymers are discussed, and the perspective and development of TADF polymers are also presented.

Key words: TADF polymers, molecular design, electroluminescence, organic light-emitting diodes, solution processing
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图1 TADF聚合物的分子设计策略
Fig. 1 Molecular design strategies of TADF polymers
图2 TADF聚合物(a)电致发光过程和(b)OLEDs的器件结构的示意图
Fig. 2 Schematic diagram of(a) electroluminescence process and (b) OLED device structure of TADF polymers
图3 以三嗪为核的树枝状TADF聚合物[31,32,33,34,35]
Fig. 3 Dendritic TADF polymers with a triazine core[31,32,33,34,35]
图4 以二苯砜为核的树枝状TADF聚合物[36,37,38,39]
Fig. 4 Dendritic TADF polymers with a diphenyl sulfone core[36,37,38,39]
图5 以二苯甲酮为核的树枝状TADF聚合物[40,41,42]
Fig. 5 Dendritic TADF polymers with a benzophenone core[40,41,42]
图6 以蒽二酮为核的树枝状TADF聚合物[43, 44]
Fig. 6 Dendritic TADF polymers with an anthraquinone core[43, 44]
图7 以苯甲腈为核的树枝状TADF聚合物[17, 47, 48]
Fig. 7 Dendritic TADF polymers with a benzonitrile core[17, 47, 48]
图8 给体和受体交替共聚型的TADF聚合物[49,50,51]
Fig. 8 TADF polymers with alternating donors and acceptors[49,50,51]
图9 受体在侧链的接枝型TADF聚合物[18,23,50,52~60]
Fig. 9 TADF Polymers with grafted acceptors[18,23,50,52~60]
图10 自主体型的TADF聚合物[61,62,63]
Fig. 10 TADF polymers with self-host units[61,62,63]
图11 非共轭主链型的TADF聚合物[19, 24, 58,64~66]
Fig. 11 Non-conjugated TADF polymers with pendant TADF units[19, 24, 58, 64~66]
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