Chin. J. Org. Chem. ›› 2019, Vol. 39 ›› Issue (5): 1436-1443.DOI: 10.6023/cjoc201810016 Previous Articles     Next Articles

Articles

基于咔唑和三嗪单元的位点调控设计并合成高效蓝光热活化延迟荧光分子

王彤彤, 华晓晨, 郁友军, 袁熠, 冯敏强, 蒋佐权   

  1. 江苏省碳基功能材料与器件重点实验室 苏州大学功能纳米与软物质研究院 苏州 215213
  • 收稿日期:2018-10-14 修回日期:2018-12-05 出版日期:2019-05-25 发布日期:2019-01-10
  • 通讯作者: 冯敏强, 蒋佐权 E-mail:mkfung@suda.edu.cn;zqjiang@suda.edu.cn
  • 基金资助:

    国家自然科学基金(Nos.21572152,51873139)资助项目.

Design and Synthesis of Highly Efficient Blue Thermally Activated Delayed Fluorescence Molecules Based on Carbazole and 1,3,5-Triazine Units through Position Engineering

Wang Tongtong, Hua Xiaochen, Yu Youjun, Yuan Yi, Fung Mankeung, Jiang Zuoquan   

  1. Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials, Soochow University, Suzhou 215123
  • Received:2018-10-14 Revised:2018-12-05 Online:2019-05-25 Published:2019-01-10
  • Contact: 10.6023/cjoc201810016 E-mail:mkfung@suda.edu.cn;zqjiang@suda.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Nos. 21572152, 51873139).

Using carbazole as the donor motif, triazine as the acceptor motif, two thermally activated delayed fluorescence (TADF) molecules of m-CzTri and p-CzTri were designed and synthesized through efficient combination and position regulation. Both materials emit bright blue fluorescence with very small singlet-triplet splitting energy. Computational simulations show that the donor and acceptor groups are well separated from the highest occupied orbit (HOMO) and the lowest unoccupied orbit (LUMO). In addition, their thermal, electrochemical, photophysical, and device properties were tested. Among them, the color coordinates of organic light emitting diode (OLED) devices with m-CzTri as the emitter were (0.15, 0.25), and the external quantum efficiency was as high as 18%.

Key words: thermal activated delayed fluorescence, carbazole, triazine, blue emitter, organic light emitting diodes