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The adsorption of iron phthalocyanine on graphite: A scanning tunnelling microscopy study

Åhlund, John; Schnadt, Joachim LU ; Nilson, Katharina; Goethelid, Emmanuelle; Schiessling, Joachim; Besenbacher, Flemming; Mårtensson, Nils LU and Puglia, Carla (2007) In Surface Science 601(17). p.3661-3667
Abstract
Different adsorption phases of iron phthalocyanine (FePc) on highly oriented pyrolitic graphite (HOPG) have been characterized by scanning tunnelling microscopy (STM). Evaporation of FePc onto the graphite (000 1) surface, kept at room temperature. results in the formation of three-dimensional molecular islands. After annealing to 400 degrees C different two-dimensional features Lire identified. depending on the initial coverage. At low doses. domains with well defined boundaries have been observed, within which molecules tend to organise in chains. At higher coverage, islands exhibiting well-ordered densely-packed square or hexagonal molecular arrangement have been resolved. For the adsorption structures corresponding to one monolayer... (More)
Different adsorption phases of iron phthalocyanine (FePc) on highly oriented pyrolitic graphite (HOPG) have been characterized by scanning tunnelling microscopy (STM). Evaporation of FePc onto the graphite (000 1) surface, kept at room temperature. results in the formation of three-dimensional molecular islands. After annealing to 400 degrees C different two-dimensional features Lire identified. depending on the initial coverage. At low doses. domains with well defined boundaries have been observed, within which molecules tend to organise in chains. At higher coverage, islands exhibiting well-ordered densely-packed square or hexagonal molecular arrangement have been resolved. For the adsorption structures corresponding to one monolayer islands our results show that the molecules adsorb with the molecular plane parallel to the surface. The high resolution STM images allow us to resolve the orientation of single molecules and Subsequently we suggest that the molecular monolayer is stabilized by van der Waals interactions. The characterization of the observed Moire contrast and a comparison with other similar systems underlines the importance of the central metal in the molecule-molecule and molecule-substrate interactions, which govern the molecular adsorption geometry. (c) 2007 Elsevier B.V. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
iron, phthalocyanine, graphite, scanning tunneling microscopy
in
Surface Science
volume
601
issue
17
pages
3661 - 3667
publisher
Elsevier
external identifiers
  • wos:000249515000019
  • scopus:34548012819
ISSN
0039-6028
DOI
10.1016/j.susc.2007.06.008
language
English
LU publication?
yes
id
907806ab-83d4-4a01-a806-05dd5bad43f2 (old id 656350)
date added to LUP
2007-12-11 12:53:21
date last changed
2017-08-27 05:20:48
@article{907806ab-83d4-4a01-a806-05dd5bad43f2,
  abstract     = {Different adsorption phases of iron phthalocyanine (FePc) on highly oriented pyrolitic graphite (HOPG) have been characterized by scanning tunnelling microscopy (STM). Evaporation of FePc onto the graphite (000 1) surface, kept at room temperature. results in the formation of three-dimensional molecular islands. After annealing to 400 degrees C different two-dimensional features Lire identified. depending on the initial coverage. At low doses. domains with well defined boundaries have been observed, within which molecules tend to organise in chains. At higher coverage, islands exhibiting well-ordered densely-packed square or hexagonal molecular arrangement have been resolved. For the adsorption structures corresponding to one monolayer islands our results show that the molecules adsorb with the molecular plane parallel to the surface. The high resolution STM images allow us to resolve the orientation of single molecules and Subsequently we suggest that the molecular monolayer is stabilized by van der Waals interactions. The characterization of the observed Moire contrast and a comparison with other similar systems underlines the importance of the central metal in the molecule-molecule and molecule-substrate interactions, which govern the molecular adsorption geometry. (c) 2007 Elsevier B.V. All rights reserved.},
  author       = {Åhlund, John and Schnadt, Joachim and Nilson, Katharina and Goethelid, Emmanuelle and Schiessling, Joachim and Besenbacher, Flemming and Mårtensson, Nils and Puglia, Carla},
  issn         = {0039-6028},
  keyword      = {iron,phthalocyanine,graphite,scanning tunneling microscopy},
  language     = {eng},
  number       = {17},
  pages        = {3661--3667},
  publisher    = {Elsevier},
  series       = {Surface Science},
  title        = {The adsorption of iron phthalocyanine on graphite: A scanning tunnelling microscopy study},
  url          = {http://dx.doi.org/10.1016/j.susc.2007.06.008},
  volume       = {601},
  year         = {2007},
}