A new acceptor, benzoylphenyltriazine, was explored as a strong acceptor of thermally-activated delayed-fluorescent (TADF) emitters because of its high external quantum efficiency. The benzoylphenyltriazine acceptor was designed to have strong acceptor strength by modifying a well-known phenyltriazine acceptor with a weak electron-withdrawing benzoyl unit. The extra benzoyl unit strengthened the electron-accepting strength of the phenyltriazine acceptor, which improved the light emission performances of the TADF emitters. A BTrztCz molecule is a derivative of the benzoylphenyltriazine acceptor and was studied as a TADF emitter. The comparison of the BTrztCz emitter with a TrztCz emitter, derived from phenyltriazine based on the same donor, showed that benzoylphenyltriazine acceptor is superior to phenyltriazine for delayed-fluorescence characteristics. The quantum efficiency of the BTrztCz (21.4%) device is greater than that of the TrztCz (20.6%) device.

一种新的受体苯甲酰苯基三嗪因其高外部量子效率而被探索作为热激活延迟荧光 (TADF) 发射体的强受体。通过用弱吸电子苯甲酰基单元修饰众所周知的苯基三嗪受体，苯甲酰苯基三嗪受体被设计为具有强受体强度。额外的苯甲酰基单元增强了苯基三嗪受体的电子接受强度，从而提高了 TADF 发射体的发光性能。BTrztCz 分子是苯甲酰苯基三嗪受体的衍生物，被研究为 TADF 发射体。BTrztCz 发射体与基于相同供体衍生自苯基三嗪的 TrztCz 发射体的比较，表明苯甲酰苯基三嗪受体的延迟荧光特性优于苯基三嗪。BTrztCz (21.4%) 器件的量子效率高于 TrztCz (20.6%) 器件的量子效率。