文献类型：期刊文献

英文题名：Single-molecule electrical characterization of photoinduced aggregation evolution

作者：Zhu, Rongqin[1,2];Xu, Xiaoyan[3];Li, Chenzi[3];Chen, Xuanying[1,2];Sahalianov, Ihor[4];Baryshnikov, Glib V.[4];Wang, Rui[1,2];Sun, Hao[3];Agren, Hans[5,6];Zou, Qi[1,2];Zhu, Liangliang[3];Tian, He[1,2]

机构：[1]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Frontiers Sci Ctr Materiobiol & Dynam Chem, Sch Chem & Mol Engn,Key Lab Adv Mat, Shanghai, Peoples R China;[2]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Frontiers Sci Ctr Materiobiol & Dynam Chem, Inst Fine Chem,Sch Chem & Mol Engn, Shanghai, Peoples R China;[3]Fudan Univ, State Key Lab Mol Engn Polymers, Shanghai, Peoples R China;[4]Linkoping Univ, Dept Sci & Technol, Lab Organ Elect, Norrkoping, Sweden;[5]Uppsala Univ, Dept Phys & Astron, Uppsala, Sweden;[6]Wroclaw Univ Sci & Technol, Fac Chem, Wroclaw, Poland

年份：2026

卷号：17

期号：1

外文期刊名：NATURE COMMUNICATIONS

收录：;Scopus(收录号：2-s2.0-105044834013);WOS:【SCI-EXPANDED(收录号:WOS:001825801200001)】；

基金：H.T. and Q.Z. disclose support for the research of this work from the National Natural Science Foundation of China (22335004 and 22588101), Fundamental and Interdisciplinary Disciplines Breakthrough Plan of the Ministry of Education of China (JYB2025XDXM404), the Science and Technology Commission of Shanghai Municipality (24DX1400200), and the Program of Introducing Talents of Discipline to Universities (B16017). Q.Z. discloses support for the research of this work from the National Natural Science Foundation of China (22475068), and the Top-notch Project of Shanghai Oriental Talents Program (BJJY2025100). I.S., G.B. and H.A. disclose the support of the NAISS facilities from the Swedish Research Council (2022-06725). G.B. discloses support of this work from the European Union (ERC, LUMOR, 101077649), Swedish Research Council (2024-05286), and Swedish Government Strategic Research Area in Materials Science on Advanced Functional Materials at Linkoping University (SFO-Mat-LiU, 2009-00971). I.S. and G.B. disclose support for the partial theoretical simulations of this work from the AForsk (25-316). R.Z., X.X., C.L., X.C., R.W., H.S. and L.Z. declare no relevant funding.

语种：英文

摘要：Elucidating the structural evolution of molecules during photoinduced aggregation remains a central challenge in molecular science, particularly in solution where aggregation processes occur dynamically. Here, we present an electrical strategy to characterize the evolution of photoinduced aggregation at the single-molecule level. Using persulfurated arenes as a model system, photoexcitation enhances intermolecular interactions that drive molecular assembly and induce conformational stabilization within aggregated species once the irradiation is halted. These stabilized conformations generate distinct ratiometric conductance signatures that can be reliably detected using scanning tunneling microscope-break junction measurements. Time-dependent irradiation experiments reveal the progressive evolution of aggregation, enabling electrical monitoring of structural changes during the assembly process. Complementary theoretical analyses further reveal the correlation between molecular geometry and conductance response. This work establishes a direct link between photoinduced aggregation evolution and single-molecule conductance, providing an electrical perspective for investigating structural dynamics in photoresponsive molecular assemblies.