This title appears in the Scientific Report : 2008 

Role of intermolecular interactions on the electronic and geometric structure of a large Pi-conjugated molecule adsorbed on a metal surface
Kilian, L.
Hauschild, A. / Temirov, R. / Soubatch, S. / Schoell, A. / Bendounan, A. / Reinert, F. / Lee, T.L. / Tautz, F. S. / Sokolowski, M. / Umbach, E.
Center of Nanoelectronic Systems for Information Technology; CNI
Grenz- und Oberflächen; IBN-3
Physical review letters, 100 (2008) S. 136103
College Park, Md. APS 2008
Journal Article
Grundlagen für zukünftige Informationstechnologien
Physical Review Letters 100
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The organic semiconductor molecule 3,4,9,10-perylene-tetracarboxylic-dianhydride (PTCDA) exhibits two adsorption states on the Ag(111) surface: one in a metastable disordered phase, prepared at low temperatures, the other in the long-range ordered monolayer phase obtained at room temperature. Notably, the two states differ substantial in their vertical bonding distances, intramolecular distortions, and electronic structures. The difference is explained by intermolecular interactions, which are particularly relevant for the long-range ordered phase, and which hence require attention.