A thermally activated delayed fluorescent (TADF) emitter, 2,7-bis(9,9-dimethylacridin-10(9H)-yl)-9,9-dimethyl-9H-thioxanthene 10,10-dioxide (DMTDAc), was developed as a deep blue TADF emitter using a rigid 9,9-dimethyl-9H-thioxanthene 10,10-dioxide (DMTD) acceptor and an acridine donor. The rigid DMTD acceptor narrowed emission spectrum of DMTDAc by interlocking two phenyl units of diphenylsulfone. A deep blue TADF device with an external quantum efficiency close to 20% with a deep blue color coordinate of (0.15,0.13) was provided using the DMTDAc TADF emitter.

中文翻译：

---

具有20％外部量子效率和窄发射光谱的深蓝色荧光发射器的分子设计

开发了热活化延迟荧光（TADF）发射体2,7-双（9,9-二甲基ac啶-10（9H）-基）-9,9-二甲基-9H-噻吨10,10-二氧化物（DMTDAc）作为深蓝色TADF发射体，它使用刚性的9,9-二甲基-9H-噻吨并10,10-二氧化物（DMTD）受体和an啶供体。刚性DMTD受体通过将二苯基砜的两个苯基单元互锁而使DMTDAc的发射光谱变窄。使用DMTDAc TADF发射器提供了外部量子效率接近20％，深蓝色坐标为（0.15,0.13）的深蓝色TADF器件。