Multiple Resonance Effect-Induced Sky-Blue Thermally Activated Delayed Fluorescence with a Narrow Emission Band
Multiple Resonance Effect-Induced Sky-Blue Thermally Activated Delayed Fluorescence with a Narrow Emission Band
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DOI：
10.1021/acs.orglett.9b03342
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发表时间：
2019-12-06
期刊：
影响因子：
5.2
通讯作者：
Hatakeyama, Takuji
中科院分区：
文献类型：
--
作者：
Oda, Susumu;Kawakami, Bungo;Hatakeyama, Takuji
通过亲核取代和亲电C-H硼化反应合成了基于多重共振效应的高效热激活延迟荧光材料，该材料具有单重态和三重态之间的能隙小、光致发光量子产率高、发射带窄等特点。采用这些材料作为发光体的有机电致发光器件表现出天蓝色的发射，具有21.4%的高外量子效率和33 nm的窄的半峰全宽。
Efficient thermally activated delayed fluorescence materials based on the multiple resonance effect were synthesized by nucleophilic substitution and electrophilic C-H borylation, featuring a small energy gap between the singlet and triplet state, high photoluminescence quantum yield, and narrow emission band. Organic light-emitting diodes employing these materials as emitters exhibited sky-blue emission with a high external quantum efficiency of 21.4% and a narrow full width at half-maximum of 33 nm.