基于嘧啶及其衍生物受体的热激活延迟荧光材料研究进展  

Recent Progress of Thermally Activated Delayed Fluorescent Materials Based on Pyrimidine and Its Derivative Acceptors

作　　者：陆梦瑶 宋祥安 邹盛南 张勇[1,2] LU Meng-yao;SONG Xiang-an;ZOU Sheng-nan;ZHANG Yong(School of Material Science and Engineering,Harbin Institute of Technology,Harbin 150006,China;Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education,Jianghan University,Wuhan 430056,China)

机构地区：[1]哈尔滨工业大学材料科学与工程学院,黑龙江哈尔滨150006 [2]江汉大学光电化学材料与器件教育部重点实验室,湖北武汉430056

出　　处：《发光学报》2022年第12期1892-1904,共13页Chinese Journal of Luminescence

基　　金：国家自然科学基金(22175049);光电化学材料与器件教育部重点实验室开放课题基金(JDGD-202213)资助项目。

摘　　要：嘧啶可作为构建D-A型热激活延迟荧光(TADF)材料的常用受体,其强吸电子特性和灵活的取代效应有利于形成多样的分子结构,为实现高效的有机电致发光提供了可能。近年来,基于嘧啶受体的分子结构设计取得了重要进展,研究方向从以D-A-D型为主的对称分子逐渐向不对称分子过渡。喹唑啉是TADF材料的一类新型受体,具有苯并嘧啶的稠环结构,延展的共轭平面使其表现出良好潜力,通过合理的分子修饰,能够有效改善器件的发光性能。本文以嘧啶受体核为基础,围绕分子结构、光物理特性和OLED器件性能等问题,简要总结了基于嘧啶及其衍生物喹唑啉受体的热激活延迟荧光材料研究进展,并对喹唑啉基TADF分子广阔的发展前景进行了展望。Pyrimidine can be used as a common acceptor for the construction of D-A type thermally activated delayed fluorescent(TADF)materials.Its strong electron absorption characteristics and flexible substitution effect are advantageous to the formation of diversified molecular structures,which lends probability to realize efficient organic electroluminescence.In recent years,important progress has been made in the molecular structure design based on pyrimidine acceptor.The research direction has transformed from symmetrical molecules dominated by D-A-D type to asymmetric molecules gradually.Quinazoline is a new acceptor of TADF materials with fused bicyclic structure of benzene and pyrimidine rings,which shows good potential as a result of extended conjugate plane.Through the reasonable molecular modification,it can improve the luminescence performance of the device effectively.In this review,we summarize the research progress of thermally activated delayed fluorescent materials based on pyrimidine and its derivative quinazoline acceptors briefly with molecular structure,photophysical properties and device performances,and look forward to the broad development prospect of TADF materials based on quinazoline.

关 键 词：热激活延迟荧光 嘧啶受体 喹唑啉 有机发光二极管 

分 类 号：O482.31[理学—固体物理]