基于铜金属有机配合物的热活化延迟荧光材料  

Thermally Activated Delayed Fluorescence Materials Based on Copper Metal-Organic Complexes

作　　者：张婷婷 洪兴枝 高慧 任颖 贾建峰[1] 武海顺[1] Tingting Zhang;Xingzhi Hong;Hui Gao;Ying Ren;Jianfeng Jia;Haishun Wu(Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education,School of Chemistry and Materials Science,Shanxi Normal University,Linfen 041004,China)

机构地区：[1]山西师范大学化学与材料科学学院磁性分子与磁信息材料教育部重点实验室,临汾041004

出　　处：《化学进展》2022年第2期411-433,共23页Progress in Chemistry

基　　金：国家自然科学基金项目(No.21401120);中国博士后科学基金(No.2018M641243);山西省研究生教育改革课题(No.2019JG126);山西省高等学校教学改革创新项目(No.J2020122);山西师范大学教学改革创新项目(No.2019JGXM-01)资助。

摘　　要：具有热活化延迟荧光(thermally activated delayed fluorescence,TADF)特性的配合物可以同时利用单重态和三重态激子,因此发光量子效率较高,近年来受到广大科研工作者的关注。特别是铜金属有机配合物,最低单重态和最低三重态的能量差较小,又可以通过不同配体或取代基进行调节,所以具有较好TADF性能。本文根据配位原子的类型,汇总和分析了近5年具有TADF性质的铜配合物的结构特点和发光性能,并简要讨论了其在有机发光二极管(organic light-emitting diodes,OLEDs)中的潜在应用。The emitting materials with thermally activated delayed fluorescence(TADF)characteristics have received increasing attention in recent years.As a typical d;metal,Cu(Ⅰ)is the most widely investigated one used to construct d;metal-organic complexes.The copper metal-organic complexes often have certain superior luminescence properties because they can harvest both singlet and triplet excitons and exhibit much higher luminescence quantum yields close to 100%.They are cost-effectiveness and comparable with phosphorescent materials in terms of device efficiency.In addition,they have lowlying metal to ligand charge transfer(MLCT)excited states with small energy difference between the lowest singlet state and the lowest triplet state(ΔE_(ST)),which is a key point to facilitate the reverse intersystem crossing(RISC)process in tuning triplet excitons to singlet excitons for TADF emission.Meanwhile,the energy difference can be adjusted by different ligands or substituents.In this paper,we summarize and analyze the structure and luminescent properties of TADF copper complexes reported in recent five years,according to the types of the coordination atoms.These complexes are classified into four classes,and the coordination atoms are mainly N,P,X(halogen),C,S(O).We mainly discuss the effects of the structures on the luminescent properties.Finally,the potential applications in organic light-emitting diodes(OLEDs)are also prospected.

关 键 词：热活化延迟荧光 铜 有机金属配合物 发光性能 有机发光二极管 

分 类 号：O627.12[理学—有机化学]