title: High resolution scanning tunneling microscopy of a 1D coordination polymer with imidazole-based N,N,O ligands on HOPG.
abstract: Novel κ(3) -N,N,O ligands tend to form 1D coordination polymer strands. Deposition of 1D structures on highly oriented pyrolytic graphite (HOPG) was achieved from diluted solutions and polymer strands have been studied on HOPG by AFM/STM. Single strands were mapped by STM and their electronic properties were subsequently characterized by current imaging tunneling spectroscopy (CITS). Periodic density functional calculations simulating a polymer strand deposited on a HOPG surface are in agreement with the zig-zag structure indicated by experimental findings. Both the observed periodicity and the Zn-Zn distances can be reproduced in the simulations. Van der Waals interactions were found to play a major role for the geometry of the isolated polymer strand, for the adsorption geometry on HOPG, as well as for the adsorption energy.
authors: Inorganic Chemistry, Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials, University of Erlangen-Nürnberg, Egerlandstrasse 1, 91058 Erlangen (Germany).
authors: Nina V
authors: NV
authors: Fischer
authors: Utpal
authors: U
authors: Mitra
authors: Karl-Georg
authors: KG
authors: Warnick
authors: Viacheslav
authors: V
authors: Dremov
authors: Michael
authors: M
authors: Stocker
authors: Thorsten
authors: T
authors: Wölfle
authors: Wolfgang
authors: W
authors: Hieringer
authors: Frank W
authors: FW
authors: Heinemann
authors: Nicolai
authors: N
authors: Burzlaff
authors: Andreas
authors: A
authors: Görling
authors: Paul
authors: P
authors: Müller
mesh_terms: D006108:Graphite / Q000737:chemistry*; D007093:Imidazoles / Q000737:chemistry*; D008024:Ligands; D016252:Microscopy, Scanning Tunneling / Q000379:methods*; D013499:Surface Properties
chemical_list: D007093:Imidazoles; D008024:Ligands; D006108:Graphite; C029899:imidazole
keywords: atomic force microscopy; coordination polymers; ligand design; scanning tunneling microscopy; zinc