title: Structural Transformation and Stabilization of Metal-Organic Motifs Induced by Halogen Doping.
abstract: The structural transformation of supramolecular nanostructures with constitutional diversity and adaptability by dynamic coordination chemistry would be of fundamental importance for potential applications in molecular switching devices. The role of halogen doping in the formation of elementary metal-organic motifs on surfaces has not been reported. Now, the 9-ethylguanine molecule (G) and Ni atom, as a model system, are used for the structural transformation and stabilization of metal-organic motifs induced by iodine doping on Au(111). The iodine atoms are homogeneously located at particular hydrogen-rich locations enclosed by G molecules by electrostatic interactions, which would be the key for such an unexpected stabilizing effect. The generality and robustness of this approach are demonstrated in different metal-organic systems (G/Fe) and also by chlorine and bromine.
authors.affiliation: Interdisciplinary Materials Research Center, Tongji-Aarhus Joint Research Center for Nanostructures and Functional Nanomaterials, College of Materials Science and Engineering, Tongji University, Shanghai, 201804, P.R. China.
authors.forename: Lei
authors.initials: L
authors.lastname: Xie
authors.affiliation: Interdisciplinary Materials Research Center, Tongji-Aarhus Joint Research Center for Nanostructures and Functional Nanomaterials, College of Materials Science and Engineering, Tongji University, Shanghai, 201804, P.R. China.
authors.forename: Chi
authors.initials: C
authors.lastname: Zhang
authors.affiliation: Interdisciplinary Materials Research Center, Tongji-Aarhus Joint Research Center for Nanostructures and Functional Nanomaterials, College of Materials Science and Engineering, Tongji University, Shanghai, 201804, P.R. China.
authors.forename: Yuanqi
authors.initials: Y
authors.lastname: Ding
authors.affiliation: Interdisciplinary Materials Research Center, Tongji-Aarhus Joint Research Center for Nanostructures and Functional Nanomaterials, College of Materials Science and Engineering, Tongji University, Shanghai, 201804, P.R. China.
authors.forename: Wei
authors.initials: W
authors.lastname: Xu
keywords: halogen doping; metal-organic motifs; nickel; scanning tunneling microscopy; structural transformation