Synthesis and properties of ipsilateral double substituted diphenylsulfone thermally activated delayed fluorescent materials
作者:Di Zhang、Huaixin Wei、Yan Wang、Guoliang Dai、Xin Zhao
DOI:10.1016/j.dyepig.2019.108028
日期:2020.3
novel donor-acceptor (D-A) type thermally activated delayed fluorescent (TADF) materials 2PXZDPS and 2DMACDPS are synthesized by attaching two donors phenoxazine (PXZ) or 9,9-dimethyl-9,10-dihydroacridine(DMAC) to the ipsilateral side of the acceptor diphenylsulfone group. The two materials show high yield, good thermal properties, suitable photophysical properties, high triplet energy and small energy
通过将两个供体吩恶嗪(PXZ)或9,9-二甲基-9,10-二氢ac啶(DMAC)附着在DNP的同侧上来合成两种新型的供体-受体(DA)型热激活延迟荧光(TADF)材料2PXZDPS和2DMACDPS。受体二苯砜基团。两种材料显示出高产率,良好的热性能,合适的光物理性能,高三重态能量以及单重态和三重态之间的能量差小,从而导致可行的热激活延迟荧光(TADF)有机发光二极管(OLED)。2PXZDPS和2DMACDPS均在OLED中显示出出色的性能。基于2PXZDPS的OLED具有20.7%的最大外部量子效率(EQE max)和2.2 V的低开启电压。