Rational molecular design of novel host material combing intra- and intermolecular charge transfers for efficient solution-processed organic light-emitting diodes
作者:Guimin Zhao、Dan Liu、Wenwen Tian、Wei Jiang、Yueming Sun
DOI:10.1016/j.dyepig.2020.108188
日期:2020.4
applied as a bridge between the various donor and acceptor parts to realize the conjugation-forbidden linkage of the molecular backbone. The photophysical properties, solvatochromism, theoretical calculations, thermal properties and device performance are systematically investigated. As anticipated, the mCP-o-TRZ molecule was endowed with intramolecular charge transfer (intra-CT) and intermolecular charge
两个带有2,4,6-二苯基-1,3,5-三嗪(TRZ)单元作为电子接受段和1,3-二(9H-咔唑-9-基)苯的D-σ-A分子( mCP)或9'-(4-(4-(4-(4,6-二苯基-1,3,5-三嗪-2-基)苯氧基)苯基)-9'H-9,3':6',9'' -叔咔唑(TCz)作为供电子部分,命名为9,9'-(5-(4-(4,6-二苯基-1,3,5-三嗪-2-基)苯氧基)-1,3-亚苯基)双(9H-咔唑)(mCP-o-TRZ)和9'-(4-(4-(4,6-二苯基-1,3,5-三嗪-2-基)苯氧基))苯基)-设计合成了9'H-9,3':6',9''-叔咔唑(TCz-o-TRZ)。氧原子用作各种供体和受体部分之间的桥,以实现分子骨架的禁止共轭连接。系统地研究了光物理性质,溶剂变色,理论计算,热性质和器件性能。不出所料 mCP-o-TRZ分子具有分子内电荷转移(intra-CT)和分子间电荷转移(in