推拉电子结构手性四配位硼的光学性质  

Donor-Acceptor Type Chiral Tetracoordinate Organoboranes and Their Optical Properties

作　　者：杨悦 黄诗雯 佟玥 陈泽达 马本华 窦传冬 YANG Yue;HUANG Shi-Wen;TONG Yue;CHEN Ze-Da;MA Ben-Hua;DOU Chuan-Dong(State Key Laboratory of Supramolecular Structure and Materials,College of Chemistry,Jinlin University,Changchun 130022,China;Jiangsu Engineering Laboratory of Novel Functional Polymeric Materials,Soochow University,Suzhou 215123,China)

机构地区：[1]吉林大学化学学院,超分子结构与材料国家重点实验室,长春130012 [2]江苏省新型高分子功能材料工程实验室,苏州215123

出　　处：《应用化学》2023年第5期743-748,共6页Chinese Journal of Applied Chemistry

基　　金：吉林省科技发展计划项目(No.20220101054JC);国家自然科学基金(No.22175074)资助。

摘　　要：圆偏振发光(Circularly polarized luminescence,CPL)有机分子是一类重要的手性光学材料,在有机光学和有机电子学等领域受到广泛关注。通过引入手性联萘基团和构建推拉电子结构的设计理念同时实施到双硼氮桥联联吡啶单元,发展出了一系列具有推拉电子结构的手性四配位硼分子。结果表明,改变给电子单元可以调节分子的发光现象,含有二苯胺(2a)和咔唑(2b)单元的分子展现出典型的聚集诱导荧光淬灭现象,而含有9,9-二甲基-9,10-二氢吖啶(2c)单元的分子具有特征的聚集诱导发光性质。手性联萘基团的引入使3个分子具有手性光学性质,展现出圆二色信号和圆偏振发光特性,它们的不对称因子均超过了1×10^(-3),另外,改变给电子单元有效调节了手性分子的发光颜色。Circularly polarized luminescence(CPL)organic molecules,an important class of chiral optical materials,have received great attention in the fields of organic optics and organic electronics.In this study,we simultaneously incorporate chiral binaphthyl moieties into and construct donor-acceptor electronic structures of double B←N bridged bipyridine.We synthesize a series of chiral tetracoordinate organoborane molecules with donor-acceptor electronic structures.While the molecules containing the diphenylamine and carbazole units exhibit conventional aggregation-caused quenching emission phenomenon,the compound bearing with the 9,9-dimethyl-9,10-dihydroacridine group has unique aggregation-induced emission property.More importantly,incorporation of two axially chiral binaphthyl moieties makes them possess intriguing chiral optical properties,as proved by circular dichroism and CPL measurements.The luminescence dissymmetric factors of their CPL properties are exceeding 1×10^(-3).

关 键 词：有机硼烷 推拉电子结构 手性 圆偏振发光 聚集诱导发光 

分 类 号：O626.5[理学—有机化学]