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
(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
- Väterlein, P. ; Schmelzer, M. ; Taborski, J. ; Krause, T. ; Viczian, F. ; Bäßler, M. LU ; Fink, R. ; Umbach, E. and Wurth, W.
- publishing date
- 2000-05-01
- 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}}, }