Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, People's Republic of China.
Institute of Molecular Functional Materials (Areas of Excellence Scheme, University Grants Committee, Hong Kong) and Department of Chemistry, The University of Hong Kong, Hong Kong, People's Republic of China.
Proc Natl Acad Sci U S A. 2019 Jul 9;116(28):13856-13861. doi: 10.1073/pnas.1908034116. Epub 2019 Jun 26.
With the rapidly growing exploration of artificial molecular machines and their applications, there is a strong demand to develop molecular machines that can have their motional states and configuration/conformation changes detectable by more sensitive and innovative methods. A visual artificial molecular hinge with phosphorescence behavior changes is designed and synthesized using square-planar cyclometalated platinum(II) complex and rigid aromatic alkynyl groups as the building blocks to construct the wings/flaps and axis, respectively. The molecular motions of this single molecular hinge and its reversible processes can be powered by both solvent and temperature changes. The rotary motion can be conveniently observed by the visual phosphorescence changes from deep-red to green emission in real time.
随着人工分子机器及其应用的快速发展,人们强烈需要开发出能够通过更灵敏和创新的方法来检测其运动状态和构象变化的分子机器。本文设计并合成了一种具有磷光行为变化的可视化人工分子铰链,使用正方形平面金属化铂(II)配合物和刚性芳基炔基作为构筑基块分别构建了翅膀/襟翼和轴。该单分子铰链及其可逆过程的分子运动可以由溶剂和温度变化共同驱动。旋转运动可以通过实时的深红光到绿光发射的可视化磷光变化方便地观察到。