Multi-state photoluminescent properties of an overcrowded alkene-based molecular motor in aggregates  

作　　者：Yahan Shan Jinyu Sheng Qi Zhang Marc C.A.Stuart Da-Hui Qu Ben L.Feringa 

机构地区：[1]Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center,School of Chemistry and Molecular Engineering,East China University of Science and Technology,Shanghai,China [2]Stratingh Institute for Chemistry and Zernike Institute for Advanced Materials,University of Groningen,Groningen,Netherlands [3]Institute of Science and Technology Austria,Klosterneuburg,Austria

出　　处：《Aggregate》2024年第5期1-8,共8页聚集体（英文）

基　　金：National Natural Science Foundation of China,Grant/Award Numbers:22220102004,22025503;Shanghai Municipal Science and Technology Major Project,Grant/Award Number:2018SHZDZX03;Innovation Program of Shanghai Municipal Education Commission,Grant/Award Number:2023ZKZD40;Fundamental Research Funds for the Central Universities,the Program of Introducing Talents of Discipline to Universities,Grant/Award Number:B16017;Science and Technology Commission of Shanghai Municipality,Grant/Award Number:21JC1401700;Starry Night Science Fund of Zhejiang University Shanghai Institute for Advanced Study,Grant/Award Number:SN-ZJU-SIAS-006;China Scholarship Council,Grant/Award Number:202006745016;Dutch Ministry of Education,Culture and Science,Grant/Award Number:024.001.035。

摘　　要：Photoisomerization and photoluminescence are two distinct energy dissipation path-ways in light-driven molecular motors.The photoisomerization properties of discrete molecular motors have been well established in solution,but their photoluminescent properties have been rarely reported-especially in aggregates.Here,it is shown that an overcrowded alkene-based molecular motor exhibits distinct dynamic prop-erties in solution and aggregate states,for example,gel and solid states.Despite the poor emissive properties of molecular motors in solution,a bright emission is observed in the aggregate states,including in gel and the crystalline solid.The emis-sion wavelength is highly dependent on the nature of the supramolecular packing and order in the aggregates.As a result,the fluorescent color can be readily tuned reversibly via mechanical grinding and vapor fuming,which provides a new platform for developing multi-stimuli functional materials.

关 键 词：aggregation-induced emission gelation-induced emission mechanochromicfluorescence molecular motor PHOTOLUMINESCENCE 

分 类 号：O17[理学—数学]