Dresden 2006 – scientific programme
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O: Oberflächenphysik
O 14: Poster session I (Adsorption, Epitaxy and growth, Phase transitions, Surface reactions, Organic films, Electronic structure, Methods) (sponsored by Omicron Nanotechnology GmbH)
O 14.48: Poster
Monday, March 27, 2006, 18:00–21:00, P2
Functional Nanostructures for Electronic Devices — •Frank Sperka1, Elena Mena-Osteritz2, and Othmar Marti1 — 1Dept. Experimental Physics, Uni Ulm — 2Dept. Organic Chemistry, Uni Ulm
The aim of this project is to produce nanostructured surfaces on structured substrates addapted to molecular structures. Furthermore we want to study the local electric and optical properties of those surfaces.
Various series of self-assembly-structures of macrocycles Cyclo(terthiophen-diine) like C[3T-DA]n, Cyclo(quinquethiophen-diine), C[5T-DA]n and Cyclo[n]thiophenes C[n]T were studied with STM. Different patterns and nanostructures for different molecule-symmetries and diameters (1-5 nm) of the cycles were found.
These nanostructured surfaces will be studied with an AFM in tapping mode. We want to investigate if these self-assembly-structures will form some overstructures on a larger lengthscale.