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High Resolution Scanning Tunneling Microscopy of a 1D Coordination Polymer with Imidazole‐Based N,N,O Ligands on HOPG
Author(s) -
Fischer Nina V.,
Mitra Utpal,
Warnick KarlGeorg,
Dremov Viacheslav,
Stocker Michael,
Wölfle Thorsten,
Hieringer Wolfgang,
Heinemann Frank W.,
Burzlaff Nicolai,
Görling Andreas,
Müller Paul
Publication year - 2014
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201302379
Subject(s) - highly oriented pyrolytic graphite , scanning tunneling microscope , van der waals force , materials science , polymer , crystallography , nanotechnology , adsorption , chemical physics , chemistry , molecule , organic chemistry , composite material
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.