Highly Efficient Thermally Activated Delayed Fluorescence with Slow Reverse Intersystem Crossing

被引：29
|
作者：
Noda, Hiroki [1 ,2 ]
Nakanotani, Hajime [1 ,2 ,3 ]
Adachi, Chihaya [1 ,2 ,3 ]
机构：
[1] Kyushu Univ, Ctr Organ Photon & Elect Res OPERA, Nishi Ku, 744 Motooka, Fukuoka, Fukuoka 8290395, Japan
[2] Kyushu Univ, OPERA, Adachi Mol Exciton Engn Project, JST,ERATO,Nishi Ku, 744 Motooka, Fukuoka, Fukuoka 8190395, Japan
[3] Kyushu Univ, Int Inst Carbon Neutral Energy Res WPI I2 CNER, Nishi Ku, 744 Motooka, Fukuoka, Fukuoka 8190395, Japan
来源：
CHEMISTRY LETTERS | 2019年 / 48卷 / 02期
基金：
日本学术振兴会; 日本科学技术振兴机构;
关键词：
Thermally activated delayed fluorescence (TADF); Reverse intersystem crossing (RISC); Long triplet lifetime; LIGHT-EMITTING-DIODES; UP-CONVERSION; CATIONS; ENERGY; OXYGEN;
D O I：
10.1246/cl.180813
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We report an efficient luminescent molecule exhibiting thermally activated delayed fluorescence with a long-delayed fluorescence lifetime of 0.8 ms. Although the reverse intersystem crossing rate constant is small at 2.1 x 10(3) s(-1), the molecule shows a high photoluminescence quantum yield of 89 +/- 2%, indicating the suppression of nonradiative decay from the triplet state.
引用
收藏
页码：126 / 129
页数：4
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