有机化学 ›› 2019, Vol. 39 ›› Issue (2): 449-455.DOI: 10.6023/cjoc201807006 上一篇    下一篇

研究论文

含有吲哚并咔唑基团的热激发延迟荧光双极性主体材料的设计、合成及应用

叶中华a, 杨佳丽a, 凌志天a, 赵艺a, 陈果b, 郑燕琼b, 魏斌b, 施鹰a   

  1. a 上海大学材料科学与工程学院 上海 200072;
    b 上海大学新型显示技术及应用集成教育部重点实验室 上海 200072
  • 收稿日期:2018-07-03 修回日期:2018-09-03 发布日期:2018-09-26
  • 通讯作者: 魏斌, 施鹰 E-mail:bwei@shu.edu.cn;yshi@shu.edu.cn
  • 基金资助:

    国家自然科学基金(No.1725505,61775130)、国家重点基础研究发展计划(973计划,No.2015CB655005)和上海市科委(No.15590500500)资助项目.

Synthesis of Host Material Containing Indolocarbazole Group Featuring Bipolar and Thermally Activated Delayed Fluorecence and Its Application

Ye Zhonghuaa, Yang Jialia, Ling Zhitiana, Zhao Yia, Chen Guob, Zheng Yanqiongb, Wei Binb, Shi Yinga   

  1. a School of Materials Science and Engineering, Shanghai University, Shanghai 200072;
    b Key Laboratory of Advanced Display and System Applications, Ministry of Education, Shanghai University, Shanghai 200072
  • Received:2018-07-03 Revised:2018-09-03 Published:2018-09-26
  • Contact: 10.6023/cjoc201807006 E-mail:bwei@shu.edu.cn;yshi@shu.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Nos. 51725505 and 61775130), the National Key Basic Research and Development Program of China (973 program, No. 2015CB655005) and the Science and Technology Committee of Shanghai City (No. 15590500500).

设计合成了一种含吲哚并咔唑基团的有机电致发光主体材料10-苯基-10-(4-(7-苯基吲[2,3-b]咔唑-5(7H)-基)苯基)蒽-9-(10H)-酮(DphAn-5PhIdCz).通过核磁氢谱对其结构进行了表征,测试了它的紫外-可见吸收波长、荧光发射波长、荧光量子产率和瞬态荧光寿命等光物理性能,该材料具有双极性和热延迟荧光特性.通过将DphAn-5PhIdCz作为绿色发光体(ppy)2 Iracac的主体,制备了高效低滚降的磷光有机电致发光器件(PhOLED),其最大发光效率达到56.12 cd·A-1,外量子效率15.70%,最大功率效率71.3 lm·W-1.这些数据表明DphAn-5PhIdCz作为PhOLED主体材料在有机发光二极管(OLED)显示和照明具有较大的潜在应用价值.

关键词: 吲哚并咔唑, 有机发光二极管, 主体材料, 双极性, 热激发延迟

The novel host material containing indolocarbazole group, 10-phenyl-10-(4-(7-phenylindolo[2,3-b]carbazol-5(7H)-yl)phenyl)anthracen-9(10H)-one (DphAn-5PhIdCz), was designed and synthesized. The structures were characterized by NMR and their photophysical properties such as ultraviolet-visible absorption wavelength, fluorescence emission wavelength, fluorescence quantum yield, and transient fluorescence lifetime were measured. The DphAn-5PhIdCz was found to exhibit the characteritics of bipolar and thermally activated delayed fluorescence. By using this material as host of green emitter, (ppy)2 Iracac, high-efficiency and low roll-off phosphorescent organic light-emitting diode (PhOLED) was fabricated with the maximum current efficiency of 56.12 cd·A-1, the maximum external quantum efficiency of 15.70% and the maximum power efficiency of 71.3 lm·W-1. These make DphAn-5PhIdCz a promising host for high performance PhOLED displays and lighting applications.

Key words: indolocarbazole group, organic light-emitting diodes, host, bipolar, thermally activated delayed fluorescence