Tetraphenylcyclopentadiene-Based Hyperbranched Polymers: Convenient Syntheses from One Pot "A4 + B2" Polymerization and High External Quantum Yields up to 9.74% in OLED Devices

被引：19
作者：
Xie, Yujun [1 ,2 ]
Gong, Yanbin [1 ]
Han, Mengmeng [1 ]
Zhang, Fengyuan [1 ]
Peng, Qian [3 ]
Xie, Guohua [1 ]
Li, Zhen [1 ,2 ]
机构：
[1] Wuhan Univ, Dept Chem, Wuhan 430072, Peoples R China
[2] Tianjin Univ, Inst Mol Aggregat Sci, Tianjin 300072, Peoples R China
[3] Chinese Acad Sci, Inst Chem, BNLMS, Key Lab Organ Solids, Beijing 100190, Peoples R China
来源：
MACROMOLECULES | 2019年 / 52卷 / 03期
基金：
美国国家科学基金会;
关键词：
LIGHT-EMITTING DEVICES; DELAYED FLUORESCENCE MATERIAL; EFFICIENT FULL-COLOR; LOW ROLL-OFF; QUANTUM EFFICIENCY; ELECTROLUMINESCENCE; BLUE; SINGLET; PHOSPHORESCENT; DIODES;
D O I：
10.1021/acs.macromol.8b02051
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Through the A(4) + B-2 type Suzuki-Miyaura coupling reaction, hyperbranched polymers CP1, CP2, and CP3 were easily prepared, which exhibited high luminous efficiency in solution, neat film, and solid state as well as good thermal stability. When fabricated into organic light-emitting diodes (OLEDs) with mCP as host, the device based on CP1 demonstrated the good EL performance with external quantum efficiency (EQE) up to 6.36%. While the bipolar TADF host of CzAcSF was utilized instead of mCP, the driving voltage (at luminescence of 10 cd m(-2)) decreased from 5.7 to 4.4 V, and the EQE further increased to 9.74%, which was the highest EQE reported for hyperbranched polymers.
引用
收藏
页码：896 / 903
页数：8
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