Abstract:
The SrTiO3(100) surface as a substrate for supramolecular structuring was
studied using frequency - modulated non-contact atomic force microscopy
(FM-NCAFM). After appropriate etching and healing treatmens, unit-cell
steps with atomically flat and smooth surfaces were successfully obtained.
These surfaces were found to be quite stable under UHV conditions as Iong
as the temperature was kept below 600 K. Specially tailored
Porphyrin-based molecules were deposited on the substrates as a trial case to
control their diffusion process on the substrate.Strong suppression of their
mobility on the surface was found by FM-NCAFM observations.