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Orientation and bonding of thiophene and 2,2′-bithiophene on Ag(111) : a combined near edge extended X-ray absorption fine structure and Xα scattered-wave study

Väterlein, P. ; Schmelzer, M. ; Taborski, J. ; Krause, T. ; Viczian, F. ; Bäßler, M. LU ; Fink, R. ; Umbach, E. and Wurth, W. (2000) In Surface Science 452(1-3). p.20-32
Abstract

The adsorption of thiophene and 2,2′-bithiophene on Ag(111) was studied using temperature programmed desorption and near-edge X-ray-absorption fine-structure (NEXAFS). The assignment of the NEXAFS resonances is supported by Xα scattered-wave calculations. For thiophene we identify a compressed and a relaxed monolayer species. Whereas the molecules in the latter state are adsorbed parallel to the surface, they are adsorbed in an inclined geometry in the compressed monolayer. For 2,2′-bithiophene, in contrast, we find a mono- and a bi-layer species, which are both adsorbed in a flat-lying geometry on the Ag(111) surface. All adsorption species are weakly bound to the surface and comprise of undissociated molecules. In addition we... (More)

The adsorption of thiophene and 2,2′-bithiophene on Ag(111) was studied using temperature programmed desorption and near-edge X-ray-absorption fine-structure (NEXAFS). The assignment of the NEXAFS resonances is supported by Xα scattered-wave calculations. For thiophene we identify a compressed and a relaxed monolayer species. Whereas the molecules in the latter state are adsorbed parallel to the surface, they are adsorbed in an inclined geometry in the compressed monolayer. For 2,2′-bithiophene, in contrast, we find a mono- and a bi-layer species, which are both adsorbed in a flat-lying geometry on the Ag(111) surface. All adsorption species are weakly bound to the surface and comprise of undissociated molecules. In addition we demonstrate an X-ray-induced partial polymerization of thiophene multilayers.

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author
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publishing date
type
Contribution to journal
publication status
published
in
Surface Science
volume
452
issue
1-3
pages
13 pages
publisher
Elsevier
external identifiers
  • scopus:0037848452
ISSN
0039-6028
DOI
10.1016/S0039-6028(00)00292-2
language
English
LU publication?
no
id
3aee4067-d0bc-48c8-95ce-a262086761e1
date added to LUP
2020-11-02 16:33:25
date last changed
2022-02-01 17:21:57
@article{3aee4067-d0bc-48c8-95ce-a262086761e1,
  abstract     = {{<p>The adsorption of thiophene and 2,2′-bithiophene on Ag(111) was studied using temperature programmed desorption and near-edge X-ray-absorption fine-structure (NEXAFS). The assignment of the NEXAFS resonances is supported by Xα scattered-wave calculations. For thiophene we identify a compressed and a relaxed monolayer species. Whereas the molecules in the latter state are adsorbed parallel to the surface, they are adsorbed in an inclined geometry in the compressed monolayer. For 2,2′-bithiophene, in contrast, we find a mono- and a bi-layer species, which are both adsorbed in a flat-lying geometry on the Ag(111) surface. All adsorption species are weakly bound to the surface and comprise of undissociated molecules. In addition we demonstrate an X-ray-induced partial polymerization of thiophene multilayers.</p>}},
  author       = {{Väterlein, P. and Schmelzer, M. and Taborski, J. and Krause, T. and Viczian, F. and Bäßler, M. and Fink, R. and Umbach, E. and Wurth, W.}},
  issn         = {{0039-6028}},
  language     = {{eng}},
  month        = {{05}},
  number       = {{1-3}},
  pages        = {{20--32}},
  publisher    = {{Elsevier}},
  series       = {{Surface Science}},
  title        = {{Orientation and bonding of thiophene and 2,2′-bithiophene on Ag(111) : a combined near edge extended X-ray absorption fine structure and Xα scattered-wave study}},
  url          = {{http://dx.doi.org/10.1016/S0039-6028(00)00292-2}},
  doi          = {{10.1016/S0039-6028(00)00292-2}},
  volume       = {{452}},
  year         = {{2000}},
}