文献类型：期刊文献

英文题名：Encoding Supramolecular Chiral Self-Assembly with Photo-Controlled Circularly Polarized Luminescence by Overcrowded Alkene-Based Bis-PBI Modulators

作者：Shi, Zhao-Tao[1,2];Wang, Qian[1,2];Yi, Jinhao[1,2];Zhao, Chengxi[1,2];Chen, Shao-Yu[1,2];Tian, He[1,2];Qu, Da-Hui[1,2]

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

年份：2022

卷号：61

期号：39

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20223512629796);WOS:【SCI-EXPANDED(收录号:WOS:000841806000001)】；

基金：This work was supported by the National Natural Science Foundation of China (grants 21788102, 22025503, 21790361, 21871084), Shanghai Municipal Science and Technology Major Project (grant 2018SHZDZX03), the Fundamental Research Funds for the Central Universities, the Programme of Introducing Talents of Discipline to Universities (grant B16017), Program of Shanghai Academic/Technology Research Leader (19XD1421100), Science and Technology Commission of Shanghai Municipality (21JC1401700) and the Starry Night Science Fund of Zhejiang University Shanghai Institute for Advanced Study (grant SN-ZJU-SIAS-006). S. Chen acknowledges the financial support of the China Postdoctoral Science Foundation (grant 2021M691003) and the Shanghai Post-doctoral Excellence Program (grant 2020109). The authors thank the Feringa Nobel Prize Scientist Joint Research Center for the support in TEM tests.

语种：英文

外文关键词：Chiral Overcrowded Alkenes; Circularly Polarized Luminescence; Photo-Control; Supramolecular Self-Assembly

摘要：Developing photoresponsive circularly polarized luminescence (CPL) materials is an essential step for biosensing and biomedical applications. However, fabricating CPL assemblies rooted in the chirality amplification and transmission of the molecular building blocks, which simultaneously show photo-controllable CPL signals, remains challenging. Herein, a molecular building block containing an overcrowded-alkene core and bis-PBI (MPBI) was designed. Importantly, the enantiopure MPBI can self-assemble into well-organized nanofibers via pi-pi stacking interactions and enable the transmission of the intrinsic chirality, providing opposite CPL signals. The photoisomerization of MPBI induced a transformation from nanofibers to discrete nanospheres, accompanied by a gradually decreased CPL signal. The results demonstrated the development of photo-controllable CPL materials from the assembly of chiral MPBI, which provides an alternatively facile strategy to fabricate CPL-active materials and would offer opportunities for future biosensing and biomedical applications.