Li Wei-Jian, Gu Qingyi, Wang Xu-Qing, Zhang Dan-Yang, Wang Yu-Te, He Xiao, Wang Wei, Yang Hai-Bo
Shanghai Key Laboratory of Green Chemistry and Chemical Processes & Chang-Kung Chuang Institute, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N. Zhongshan Road, Shanghai, 200062, P. R. China.
Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N. Zhongshan Road, Shanghai, 200062, P. R. China.
Angew Chem Int Ed Engl. 2021 Apr 19;60(17):9507-9515. doi: 10.1002/anie.202100934. Epub 2021 Mar 11.
The construction of circularly polarized luminescence (CPL) switches with multiple switchable emission states and high dissymmetry factors (g ) has attracted increasing attention due to their broad applications in diverse fields such as the development of smart devices and sensors. Herein, a new family of AIE-active chiral [3]rotaxanes were designed and synthesized, from which a novel CPL switching system was successfully constructed. The switching process was realized through the controlled motions of the chiral pillar[5]arene macrocycles along the axle through the addition or removal of the acetate anions, which not only modulated the chirality information transfer but also tuned the aggregations of the integrated [3]rotaxanes, thus resulting in reversible transformations between two emission states with both high photoluminescence quantum yields (PLQYs) and high dissymmetry factors (g ) values.
具有多个可切换发射态和高不对称因子（g）的圆偏振发光（CPL）开关的构建，因其在智能设备和传感器开发等不同领域的广泛应用而受到越来越多的关注。在此，设计并合成了一类新型的聚集诱导发光（AIE）活性手性[3]轮烷，并成功构建了一种新型的CPL开关系统。通过添加或去除醋酸根阴离子，手性柱[5]芳烃大环沿着轴的可控运动实现了开关过程，这不仅调节了手性信息传递，还调节了整体[3]轮烷的聚集，从而导致两个发射态之间的可逆转变，且具有高光致发光量子产率（PLQYs）和高不对称因子（g）值。
