文献类型：期刊文献

英文题名：Visible-Light-Driven Rotation of Molecular Motors in Discrete Supramolecular Metallacycles

作者：Shi, Zhao-Tao[1,2];Hu, Yi-Xiong[3];Hu, Zhubin[4];Zhang, Qi[1,2,5];Chen, Shao-Yu[1,2,5];Chen, Meng[1,2];Yu, Jing-Jing[1,2];Yin, Guang-Qiang[6];Sun, Haitao[4];Xu, Lin[3];Li, Xiaopeng[6];Feringa, Ben L.[1,2,5];Yang, Hai-Bo[3];Tian, He[1,2];Qu, Da-Hui[1,2]

机构：[1]East China Univ Sci & Technol, Key Lab Adv Mat, Inst Fine Chem,Feringa Nobel Prize Scientist Join, Sch Chem & Mol Engn,Frontiers Sci Ctr Materiobiol, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Joint Int Res Lab Precis Chem & Mol Engn, Inst Fine Chem,Feringa Nobel Prize Scientist Join, Sch Chem & Mol Engn,Frontiers Sci Ctr Materiobiol, Shanghai 200237, Peoples R China;[3]East China Normal Univ, Shanghai Key Lab Green Chem & Chem Proc, Sch Chem & Mol Engn, Shanghai 200062, Peoples R China;[4]East China Normal Univ, State Key Lab Precis Spect, Shanghai 200062, Peoples R China;[5]Univ Groningen, Ctr Syst Chem, Stratingh Inst Chem, NL-9747 AG Groningen, Netherlands;[6]Shenzhen Univ, Coll Chem & Environm Engn, Shenzhen 518055, Peoples R China

年份：2021

卷号：143

期号：1

起止页码：442

外文期刊名：JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

收录：;EI(收录号：20210209754675);WOS:【SCI-EXPANDED(收录号:WOS:000611083700053)】；

基金：This work was supported by the National Natural Science Foundation of China (grants 22025503, 21790361, 21871084, and 21672060), 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), and the Shanghai Science and Technology Committee (grant 17520750100). B.L.F. acknowledges financial support of The Netherlands Ministry of Education, Culture and Science (Gravitation program 024.601035) and the European Research Council (ERC, advanced grant no. 694345 to B.L.F.). We thank the Research Center of Analysis and Test of East China University of Science and Technology for help on the characterization.

语种：英文

外文关键词：Supramolecular chemistry - Platinum compounds - Metals - Red Shift - Light - Isomers

摘要：The organization of molecular motors in supramolecular assemblies to allow the amplification and transmission of motion and collective action is an important step toward future responsive systems. Metal-coordination-driven directional self-assembly into supramolecular metallacycles provides a powerful strategy to position several motor units in larger structures with well-defined geometries. Herein, we present a pyridyl-modified molecular motor ligand (MPY) which upon coordination with geometrically distinct di-Pt(II) acceptors assembles into discrete metallacycles of different sizes and shapes. This coordination leads to a red-shift of the absorption bands of molecular motors, making these motorized metallacycles responsive to visible light. Photochemical and thermal isomerization experiments demonstrated that the light-driven rotation of the motors in the metallacycles is similar to that in free MPY in solution. CD studies show that the helicity inversions associated with each isomerization step in the rotary cycle are preserved. To explore collective motion, the trimeric motor-containing metallacycle was aggregated with heparin through multiple electrostatic interactions, to construct a multi-component hierarchical system. SEM, TEM, and DLS measurements revealed that the photo- and thermal-responsive molecular motor units enabled selective manipulation of the secondary supramolecular aggregation process without dissociating the primary metallacycle structures. These visible-light-responsive metallacycles, with intrinsic multiple rotary motors, offer prospects for cooperative operations, dynamic hierarchical self-assembled systems, and adaptive materials.