Topological effect on fluorescence emission of tetraphenylethylene-based metallacages  

作　　者：Yuhang Liu Zhewen Guo Yuchen Gu Guangfeng Li Shengbing Yang Xuzhou Yan Yi Shen Jinbing Wang 

机构地区：[1]Department of Oral and Maxllofacial-Head and Neck Oncology,Shanghai Ninth People's Hospital,Shanghai Jjiao Tong University School of Medicine,College of Stomatology,National Center for Stomatology,National Clinical Research Center for Oral Diseases,Shanghai Key Laboratory of Stomatology.Shanghai Jiao Tong University,Shanghai Research Institute of Stomatology,Shanghai 200011,China [2]School of Chemistry and Chemical Engineering,Frontiers Science Center for Transformative Molecules,Shanghai Jjiao Tong University,Shanghai 200240,China [3]Shanghai Key Laboratory of Orthopaedic Implants,Department of Orthopaedic Surgery,Shanghai Ninth People's Hospital,Shanghai jiao Tong University School of Medicine,Shanghai 200125,China

出　　处：《Chinese Chemical Letters》2023年第12期196-199,共4页中国化学快报（英文版）

基　　金：financially supported by Interdisciplinary Program of Shanghai Jiao Tong University(No.YG2019QNA16);Shanghai Sailing Program(No.20YF1422600);Natural Science Foundation of Shanghai(No.22dz1207603);National Natural Science Foundation of China(Nos.32101092 and 21901161).

摘　　要：Herein,we describe the selective formation of a barrel-shaped or a ball-shaped fluorescent metallacage by controlling the shape and stoichiometry of the building blocks.Specifically,the tetraphenylethylene-based donor and two acceptors with different numbers of Pt(Ⅱ)centers were combined via coordination-driven self-assembly.Owing to the differences in the shapes of the assemblies,the resultant ball-shaped metallacage displayed stronger and blue-shifted fluorescence compared to the barrel-shaped one in dilute solutions,while a reversal of fluorescence intensities was observed in the aggregation process.Overall,this work demonstrates that the photophysical properties of supramolecular coordination complexes can be affected by subtle geometrical factors,which can be controlled precisely at the molecular level.

关 键 词：Topological effect Photophysical properties Aggregation-induced emission Coordination-driven self-assembly Supramolecular metallacages 

分 类 号：O657.3[理学—分析化学]