o-carborane acceptor moiety have been designed and synthesized for efficient tunable solid-state fluorescence and low-temperature phosphorescence. The results showed that four dyads are all AIEgens with dual emission properties in solution, highly solid-state emission, and low-temperature phosphorescence. The dual emissions were attributed to the locally excited (LE) and twisted intramolecular charge
基于各种
咪唑衍
生物供体和邻位的四个D-π-A二元组已经设计并合成了碳氢烷受体部分,以实现有效的可调谐固态荧光和低温
磷光。结果表明,四个二元组都是在溶液中具有双重发射特性,高固态发射和低温
磷光的AIEgen。双重发射归因于局部激发(LE)和扭曲的分子内电荷转移(TICT)发射。晶体学测量和理论计算表明,低温下长寿命可达2.18 s的强
磷光可能归因于C–H⋅⋅⋅N,C–H⋅⋅⋅π相互作用,较强的TICT效应和降低的通过将庞大的碳
硼烷部分连接到生色团上进行振动耦合。