Chinese Journal of Organic Chemistry ›› 2023, Vol. 43 ›› Issue (5): 1645-1690.DOI: 10.6023/cjoc202212037 Previous Articles     Next Articles

Special Issue: 有机硼化学专辑



张祎, 杜呈卓, 李继坤, 王小野*()   

  1. 南开大学化学学院 元素有机化学国家重点实验室 天津 300071
  • 收稿日期:2022-12-29 修回日期:2023-02-03 发布日期:2023-02-22
  • 通讯作者: 王小野
  • 基金资助:
    国家自然科学基金(22071120); 国家自然科学基金(92256304); 国家重点研发计划(2022YFB4200600); 中央高校基本科研业务费专项资金资助项目

Recent Advances in Multi-Resonance Thermally Activated Delayed Fluorescence Materials Based on B,N-Heteroarenes

Yi Zhang, Cheng-Zhuo Du, Ji-Kun Li, Xiao-Ye Wang()   

  1. State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071
  • Received:2022-12-29 Revised:2023-02-03 Published:2023-02-22
  • Contact: Xiao-Ye Wang
  • Supported by:
    National Natural Science Foundation of China(22071120); National Natural Science Foundation of China(92256304); National Key R&D Program of China(2022YFB4200600); Fundamental Research Funds for the Central Universities

In recent years, multi-resonance thermally activated delayed fluorescence (MR-TADF) materials have attracted wide attention because of their excellent photophysical properties and electroluminescent performance. By introducing electron-deficient and electron-rich centers (such as boron and nitrogen atoms) in the framework of polycyclic aromatic hydrocarbons (PAHs), the HOMO and LUMO can be separated on different atoms due to the opposite resonance effects, which can reduce the singlet-triplet energy gap (ΔEST) to achieve TADF properties. Compared with conventional donor-acceptor type TADF materials, MR-TADF materials have rigid skeletons and show short-range charge transfer characteristics, which are conducive to realizing narrowband luminescence with high color purity and high quantum efficiency, making them ideal luminescent materials and widely used in organic light-emitting diodes (OLEDs). Since the first report of MR-TADF materials based on B,N-heteroarenes in 2016, significant progress has been achieved in the development of new materials. However, a timely summary on this topic is still lacking. In this review, the design strategy and synthetic method of MR-TADF materials based on B,N-heteroarenes are summarized, and the recent advances in the development of new molecular skeletons, the backbone modification strategy to tune the properties, and a novel type of chiral MR-TADF materials are discussed. It is expected that the current review would further promote the development and application of MR-TADF materials in the future.

Key words: multi-resonance, thermally activated delayed fluorescence, organic light-emitting diodes, B,N-heteroarenes, narrowband luminescence