Berlin 2018 – scientific programme
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O: Fachverband Oberflächenphysik
O 87: Focus Session: Molecular Nanostructures on surfaces - New Concepts towards Complex Architectures V
O 87.4: Talk
Thursday, March 15, 2018, 11:30–11:45, MA 004
Self-assembly of synthetic peptides on surfaces — •Uta Schlickum1 ,2, Sebastian Koslowski1, Suman Sen1, Xu Wu1, Sabine Abb1, Stephan Rauschenbach1, and Klaus Kern1, 3 — 1Max-Planck-Institut für Festkörperforschung, 70569 Stuttgart, Germany — 2Institut für Angewandte Physik, TU Braunschweig, 38106 Braunschweig, Germany — 3École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
Peptides have outstanding intriguing functionalities determined by their self-assembled structures. We have investigated the self-assembly of peptides on surfaces to probe the interaction between specific amino acids at sub-molecular length scales. For these high resolution studies we deposited the peptides under ultrahigh vacuum conditions using an electrospray ion beam deposition source and transferred them in-situ into a low temperature scanning tunneling microscope. Our model systems of synthetic peptides consist of eight amino acids including only Arginine, Proline, and Tryptophan. Our results show, how tiny changes within simple peptide sequences drastically influence the self-assembly pattern due to the high conformational freedom of these molecular systems.