| Issue |
Europhys. Lett.
Volume 52, Number 2, October II 2000
|
|
|---|---|---|
| Page(s) | 144 - 150 | |
| Section | Condensed matter: structure, mechanical and thermal properties | |
| DOI | https://doi.org/10.1209/epl/i2000-00416-x | |
| Published online | 01 September 2002 | |
Adsorption-induced distortion of a large
π-conjugated molecule studied by
surface 
-ray diffraction:
End-capped quaterthiophene on 
1
Institut für Kristallographie & Angewandte Mineralogie, Universität
München
Theresienstraße 41, D-80333 München, Germany
2
Experimentelle Physik II, Universität Würzburg
Am Hubland, D-97074 Würzburg, Germany
3
Abteilung Organische Chemie II, Universität Ulm
Albert-Einstein-Allee 11, D-89081 Ulm, Germany
Corresponding author: hmeyerhm@mpi-halle.de
Received:
17
April
2000
Accepted:
21
August
2000
The internal geometric structure of a large π-conjugated organic molecule adsorbed on a metallic surface (end-capped quaterthiophene on Ag(111)) was determined in detail by using surface X-ray diffraction. In contrast to the common belief that such molecules remain undistorted on a weakly interacting substrate, we find significant distortion of the thiophene rings and elongation of the bond distances. These results open new perspectives for the understanding of large organic adsorbates and have important implications for a deeper insight into organic/inorganic interfaces in general.
PACS: 61.10.-i – X-ray diffraction and scattering / 68.35.Bs – Surface structure and topography
© EDP Sciences, 2000
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