Aromatic-Imide-Based Thermally Activated Delayed Fluorescence Materials for Highly Efficient Organic Light-Emitting Diodes

被引：130
|
作者：
Li, Meng [1 ,2 ]
Liu, Yanwei [3 ]
Duan, Ruihong [4 ]
Wei, Xiaofang [3 ]
Yi, Yuanping [4 ]
Wang, Ying [3 ]
Chen, Chuan-Feng [1 ,2 ]
机构：
[1] Chinese Acad Sci, CAS Key Lab Mol Recognit & Funct, Inst Chem, Beijing 100190, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] Chinese Acad Sci, Key Lab Photochem Convers & Optoelectr Mat, Tech Inst Phys & Chem, Beijing 100190, Peoples R China
[4] Chinese Acad Sci, Inst Chem, CAS Key Lab Organ Solids, Beijing 100190, Peoples R China
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2017年 / 56卷 / 30期
基金：
中国国家自然科学基金;
关键词：
aromatic imides; electroluminescence; fluorescence; materials science; organic light-emitting diodes; EXTERNAL QUANTUM EFFICIENCY; MOLECULAR DESIGN; PHOTOPHYSICAL PROPERTIES; POWER EFFICIENCY; ROLL-OFF; BLUE; EMITTERS; GREEN; 25-PERCENT; COMPLEXES;
D O I：
10.1002/anie.201704435
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Aromatic-imide-based thermally activated delayed fluorescence (TADF) materials with a twisted donor-acceptor-donor skeleton were efficiently synthesized and exhibited excellent thermal stability and high photoluminescence quantum yields. The small Delta E-ST value (< 0.1 eV) along with the clear temperature-dependent delayed component of their transient photoluminescence (PL) spectra demonstrated their excellent TADF properties. Moreover, the performance of organic light-emitting diodes in which TADF materials AI-Cz and AI-TBCz were used as dopants were outstanding, with external quantum efficiencies up to 23.2 and 21.1%, respectively.
引用
收藏
页码：8818 / 8822
页数：5
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