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Self-assembled two-dimensional molecular host-guest architectures from trimesic acid

Single Molecules 3(1): 25-31

Autoren/Herausgeber: Griessl S
Lackinger M
Edelwirth M
Hietschold M
Heckl WM
Erschienen: 2002

The adsorption of 1,3,5-Benzenetricarboxylic (Trimesic) Acid (TMA) to a single crystal 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 periodic non-dense-packing of the molecules. Two coexisting phases could be imaged with sub-molecular resolution by STM. Induced by directed hydrogen bonding, the organic molecules built in both cases a two-dimensional grid architecture with molecular caves. This two-dimensional host structure can accept single trimesic acid guest molecules in different positions.