Regensburg 2004 – wissenschaftliches Programm

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O: Oberflächenphysik

O 14: Postersitzung (Adsorption an Oberflächen, Epitaxie und Wachstum, Organische Dünnschichten, Oxide und Isolatoren, Phasenübergänge, Rastersondentechniken, Struktur und Dynamik reiner Oberflächen)

O 14.26: Poster

Montag, 8. März 2004, 18:00–21:00, Bereich C

One- and two-dimensional chiral assemblies of lander molecules — •Jens Kuntze, Xin Ge, and Richard Berndt — Institut für Experimentelle und Angewandte Physik der Christian-Albrechts-Universität zu Kiel

Supramolecular assemblies of lander molecules (C₉₀H₉₈) on Cu(100) and Cu(111) are investigated with low-temperature scanning tunneling microscopy. The energetically most favourable conformation of the adsorbed molecule is found to exist in two mirror symmetric enantiomers or conformers. At low coverage, the molecules align in enantiomerically pure chains along chiral directions. The arrangement is proposed to be mainly governed by intermolecular van-der-Waals interaction. At higher coverages, the molecular chains arrange to chiral domains, for which structural models are presented.