Templated Growth of Metal-Organic Coordination Chains at Surfaces

摘要

Metal-organic coordination networks (MOCNs) formed by coordination bonding between metallic centers and organic ligands can be efficiently engineered to exhibit specific magnetic,electronic,or catalytic properties.Instead of depositing prefabricated MOCNs onto surfaces,it has been recently shown that two-dimensional (2D) MOCNs can be directly grown at metal surfaces under ultrahigh vacuum (UHV),thus creating highly regular 2D networks of metal atoms.These grids have been pointed out to be potentially relevant for devices that involve sensing,switching,and information storage.We show here that this approach offers the additional advantage to predefine the geometry of the MOCN by using the substrate as a template to direct the formation of novel 1D metal-organic coordination chains (MOCCs).