Rigid indolocarbazole donor moiety for highly efficient thermally activated delayed fluorescent device
作者:Jee Hyun Maeng、Dae Hyun Ahn、Hyuna Lee、Young Hun Jung、Durai Karthik、Ju Young Lee、Jang Hyuk Kwon
DOI:10.1016/j.dyepig.2020.108485
日期:2020.9
A new rigid donor moiety, namely, triphenyl-substituted indolocarbazole for thermally activated delayed fluorescence (TADF) materials is reported. Based on this donor, two novel TADF emitters 5-(2,12-di-tert-butyl-5,9-dioxa-13b-boranaphtho [3,2,1-de]anthracen-7-yl)-6,11,12-triphenyl-5,11-dihydroindolo [3,2-b]carbazole (TDBA-TPDICz) and 5-(4-(4,6-diphenyl-1,3,5-triazin-2-yl)phenyl)-6,11,12-triphenyl-5
报道了一种新的刚性供体部分,即用于热活化延迟荧光(TADF)材料的三苯基取代的吲哚并咔唑。在此基础上的供体,两种新的发射器TADF 5-(2,12-二-叔-丁基-5,9-二氧杂-13b-硼萘并[3,2,1-de]蒽-7-基)-6,11,12-三苯基-5,11-二氢吲哚并[3,2-b]咔唑( TDBA-TPDICz)和5-(4-(4,6-diphenyl-1,3,5-triazin-2-yl)phenyl)-6,11,12-triphenyl-5,11-dihydroindolo [3,2-合成了b]咔唑(TRZ-TPDICz)并评估为TADF发射体。供体部分6、12位的苯基取代增加了供体和受体之间的空间位阻,导致它们之间的二面角增加。结果,通过光物理,电化学性质分析了这些发射体的TADF性质的变化,并与类似物参考物质5-(4-(4,6-二苯基-1,3,5-三嗪-2-基)进行了比较。 )苯基)-11-苯基-5