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O: Oberflächenphysik
O 6: Nanostrukturen (I)
O 6.1: Talk
Monday, March 11, 2002, 11:15–11:30, H45
Self-Assembled Two-Dimensional Molecular Host-Guest Architectures From Trimesic Acid — •Stefan Griessl1,2, Markus Lackinger2, Michael Hietschold2, and Wolfgang Heckl1 — 1Ludwig-Maximilians-Univerität München, Institut für Mineralogie und Kristallographie, München, Germany — 2Technische Universität Chemnitz, Institut für Physik, Chemnitz, Germany
The adsorption of trimesic acid (TMA) on a graphite surface has been studied under Ultra High Vacuum conditions. This work focuses on inducing a particular self-assembly structure by OMBE (Organic Molecular Beam Epitaxy), characterized by a less-dense-packing of the molecules. Two coexisting phases could be imaged with sub-molecular resolution by STM. In both cases the structure builds a two dimensional grid architecture with molecular caves by directed hydrogen bonding of organic molecules. As a investigated guest, single trimesic acids guest molecules in different positions are shown.