title: Constitutional Dynamics of Metal-Organic Motifs on a Au(111) Surface.
abstract: Constitutional dynamic chemistry (CDC), including both dynamic covalent chemistry and dynamic noncovalent chemistry, relies on reversible formation and breakage of bonds to achieve continuous changes in constitution by reorganization of components. In this regard, CDC is considered to be an efficient and appealing strategy for selective fabrication of surface nanostructures by virtue of dynamic diversity. Although constitutional dynamics of monolayered structures has been recently demonstrated at liquid/solid interfaces, most of molecular reorganization/reaction processes were thought to be irreversible under ultrahigh vacuum (UHV) conditions where CDC is therefore a challenge to be achieved. Here, we have successfully constructed a system that presents constitutional dynamics on a solid surface based on dynamic coordination chemistry, in which selective formation of metal-organic motifs is achieved under UHV conditions. The key to making this reversible switching successful is the molecule-substrate interaction as revealed by DFT calculations.
authors.affiliation: Tongji-Aarhus Joint Research Center for Nanostructures and Functional Nanomaterials, College of Materials Science and Engineering, Tongji University, Caoan Road 4800, Shanghai, 201804, P.R. China.
authors.forename: Huihui
authors.initials: H
authors.lastname: Kong
authors.affiliation: Tongji-Aarhus Joint Research Center for Nanostructures and Functional Nanomaterials, College of Materials Science and Engineering, Tongji University, Caoan Road 4800, Shanghai, 201804, P.R. China.
authors.forename: Chi
authors.initials: C
authors.lastname: Zhang
authors.affiliation: Tongji-Aarhus Joint Research Center for Nanostructures and Functional Nanomaterials, College of Materials Science and Engineering, Tongji University, Caoan Road 4800, Shanghai, 201804, P.R. China.
authors.forename: Lei
authors.initials: L
authors.lastname: Xie
authors.affiliation: Tongji-Aarhus Joint Research Center for Nanostructures and Functional Nanomaterials, College of Materials Science and Engineering, Tongji University, Caoan Road 4800, Shanghai, 201804, P.R. China.
authors.forename: Likun
authors.initials: L
authors.lastname: Wang
authors.affiliation: Tongji-Aarhus Joint Research Center for Nanostructures and Functional Nanomaterials, College of Materials Science and Engineering, Tongji University, Caoan Road 4800, Shanghai, 201804, P.R. China. xuwei@tongji.edu.cn.
authors.forename: Wei
authors.initials: W
authors.lastname: Xu
keywords: density functional theory; dynamic coordination chemistry; metal-organic motifs; scanning tunneling microscopy; surface chemistry