Berlin 2012 – scientific programme

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O: Fachverband Oberflächenphysik

O 7: Metal substrates: Adsorption of organic / bio molecules I

O 7.9: Talk

Monday, March 26, 2012, 12:30–12:45, A 053

Low Temperature Scanning Tunneling Microscopy Study of Co-Phthalocyanine Molecules on Au (111) and Graphene/Ir (111) — •Samuel Bouvron, Philipp Erler, Stefan Ambrus, Udo Dehm, David Heese, Elizabeta Ćavar, and Mikhail Fonin — Fachbereich Physik, Universität Konstanz

Metal-phthalocyanines have attracted substantial attention due to their possible applications in molecular electronic devices. Since it may affect the electronic structure and magnetic properties of the molecule, the interaction between a molecule and a substrate is of crucial importance. Furthermore, the adsorption behavior of molecules on surfaces is decisive in a bottom up approach to build molecular electronics. For a better understanding of the interaction between Cobalt-Phthalocyanine molecules (CoPc) and surfaces, we investigated CoPc molecules deposited on Au (111) and Graphene/Ir (111) at different coverages by means of low-temperature scanning tunneling microscopy (STM) and near-edge xray absorption spectroscopy (NEXAFS). The possible use of the graphene layer to decouple the CoPc molecule from a metallic substrate will be discussed.