文献类型：期刊文献

英文题名：Real-Time Visual Monitoring of Kinetically Controlled Self-Assembly

作者：Huang, Zizhao[1,2];Jiang, Tao[1,2];Wang, Jie[1,2];Ma, Xiang[1,2];Tian, He[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, Meilong Rd 130, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Frontiers Sci Ctr Materiobiol & Dynam Chem, Sch Chem & Mol Engn, Meilong Rd 130, Shanghai 200237, Peoples R China

年份：2021

卷号：60

期号：6

起止页码：2855

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20205009600513);WOS:【SCI-EXPANDED(收录号:WOS:000596587700001)】；

基金：We gratefully acknowledge financial support from the National Natural Science Foundation of China (21788102, 22020102006, 21722603 and 21871083), project support by the Shanghai Municipal Science and Technology Major Project (Grant No.2018SHZDZX03), the Program of Shanghai Academic/Technology Research Leaders (20XD1421300), the "Shu Guang" project supported by Shanghai Municipal Education Commission and Shanghai Education Development Foundation (19SG26), the Innovation Program of Shanghai Municipal Education Commission(2017 01-07-00-02-E00010), and the Fundamental Research Funds for the Central Universities. We thank Prof. Y. Cheng (Nanjing University) and Prof. L. Feng (Shanghai University) for their kind assistance. Helpful discussions with Z. Yuan, X. Jin, and L. Ma are also acknowledged.

语种：英文

外文关键词：circularly polarized luminescence; kinetic traps; self-assembly; vibration-induced emission; visual monitoring

摘要：The construction of artificial structures through hierarchical self-assembly based on noncovalent interactions, as well as monitoring during the self-assembly process, are important aspects of dynamic supramolecular chemistry. Herein we describe the complex dynamics of chiral N,N '-diphenyl dihydrodibenzo[a,c]phenazine derivatives (S)/(R)-DPAC, whose different assemblies were found to have distinct optical and morphological characteristics. With ratiometric fluorescence originating from vibration-induced emission (VIE), the self-assembly process from kinetic traps to the thermodynamic equilibrium state could be monitored in real time by optical spectrometry. During the morphology transformation from particles to nanobricks, strong circularly polarized luminescence was induced with g(lum)=1.6x10(-2). The excited-state characteristics of the self-assemblies enabled investigation of the relationship between molecular aggregation and conformational change, thus allowing effective monitoring of the sophisticated supramolecular self-assembly process.