Abstract
PTCDA (3,4,9,10-perylene-tetracarboxylic-dianhydride) molecular structures assembled on an InSb(001)c(8 × 2) reconstructed surface have been studied using frequency modulated atomic forcemicroscopy. The high-resolution imaging of the structures is possible through repulsiveinteractions, using the constant height scanning mode. During initial stages ofgrowth the [110] diffusion channel dominates as indicated by formation of longPTCDA molecular chains parallel to the [110] crystallographic direction on the InSbsurface. For a single monolayer coverage a wetting layer of PTCDA is formed.Finally it is shown that the PTCDA/InSb is a promising system for buildingmolecular nanostructures by manipulation of single molecules with the AFM tip.
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