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HL: Fachverband Halbleiterphysik

HL 103: Graphene: Adsorption, intercalation, doping (organized by O)

HL 103.1: Vortrag

Donnerstag, 3. April 2014, 16:00–16:15, WIL C107

Covalent binding of single iron phtalocyanine molecules to graphene on Ir(111) — •Simon J. Altenburg¹, Shiri R. Burema², Bin Wang³, Richard Berndt¹, and Marie-Laure Bocquet^{2, 4} — ¹Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität zu Kiel, D-24098 Kiel, Germany — ²Université de Lyon, Laboratoire de Chimie, Ecole Normale Supérieure de Lyon, CNRS, F69007 Lyon, France — ³Department of Physics & Astronomy, Vanderbilt University, Nashville, TN 37235 — ⁴Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139

Single iron phtalocyanine (FePc) molecules on graphene on Ir(111) are studied by low temperature scanning tunneling microscopy. The molecules are either unperturbed and weakly coupled to the substrate or bound to graphene by a lobe in a specific region of the moiré unit cell. Concomittant density functional calculations reveal that the binding between the FePc lobe and graphene is the result of a new kind of cyclization reaction. This reaction is activated in certain regions of the moiré unit cell by the presence of the iridium substrate.