Regensburg 2016 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 68: Nanostructures at Surfaces: 1D, 2D Structures and Networks
O 68.12: Poster
Mittwoch, 9. März 2016, 18:15–20:30, Poster A
Metal-Peptide Coordination Complexes on Surfaces by Electrospray Ion Beam Deposition — •Elise Duquesne1, Sabine Abb1, Ludger Harnau1, Stefan Rauschenbach1, and Klaus Kern1,2 — 1Max Planck Institute for Solid State Research, Heisenbergstraße 1, 70569 Stuttgart, Germany — 2Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
Peptides are flexible biopolymers of a unique sequence of amino acids, which defines intramolecular interactions. In metal-peptide coordination complexes, the type of metal and its specific interaction with the peptide influences the coordination site and thus has an impact on the conformation of the peptide. Generally biomolecules cannot be evaporated due to their thermal instability, however by adding a metal salt to an electrospray solution of peptides a beam of well-defined coordination complexes can be readily formed and mass-filtered to select the coordination complex of interest. The aim of our study is to investigate the structures of metal-peptide complexes deposited on an atomically defined surface in ultra-high vacuum and to compare them with pure peptide structures [1]. Our work paves the way towards rational design of surface supported coordination complexes that can be relevant for a great number of applications in particular biomimetic catalysis.
References : [1] S. Abb, L. Harnau, R. Gutzler, S. Rauschenbach, K. Kern, Two-dimensional honeycomb network through sequence-controlled selfassembly of oligopeptides, Nature Communication, Accepted.