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O: Fachverband Oberflächenphysik

O 36: Poster Session II (Metals; Nanostructures at surfaces; Surface or interface magnetism; Spin-Orbit Interaction at Surfaces; Electron and spin dynamics; Surface dynamics; Methods; Theory and computation of electronic structure)

O 36.36: Poster

Tuesday, March 15, 2011, 18:30–22:00, P4

Interactions of the biomolecules L-cysteine and adenine with metals investigated by STM — •Sybille Fischer, Anthoula Papageorgiou, Matthias Marschall, Joachim Reichert, and Johannes V. Barth — Physik Department E20, TU München, James-Franck-Straße, D-85748 Garching

Understanding the interactions between biomolecules like amino acids and nucleobases as building blocks of the DNA and metal binding sites of proteins are important for the comprehension of many neurodegenerative diseases. Metal-organic coordination networks can act as model systems to investigate these interactions and represent at the same time robust, room temperature stable bio-interfaces which might be useful for enantio-selective catalysis. Here we present a scanning tunneling microscopy (STM) study of L-cysteine and adenine with and without metal adatoms on noble metal surfaces to visualize the self-assembly of these molecules at varying temperatures.