Regensburg 2016 – scientific programme

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O: Fachverband Oberflächenphysik

O 58: Organic-Inorganic Systems III: Metal-Organics

O 58.10: Talk

Wednesday, March 9, 2016, 17:30–17:45, S054

Metalation of porphyrins on metal and oxide surfaces — •Ole Lytken, Michael Röckert, Matthias Franke, Daniel Wechsler, Quratulain Tariq, and Hans-Peter Steinrück — Universität Erlangen-Nürnberg

Porphyrins are large conjugated organic molecules with four pyrrole units capable of coordinating either two protons or a metal ion in the center of the molecule. Both metalated and unmetalated molecules can be deposited on surfaces under ultrahigh vacuum using physical vapor deposition. However, once deposited the unmetalated molecules might react with the substrate they have been deposited on and metalate. We have studied this self-metalation reaction of 5,10,15,20-tetraphenylpoprhyrin (2HTPP) on Cu(111), a metal surface, and MgO(100), an oxide surface. On both surfaces the reaction with the substrate occurs at, or slightly above, room temperature, forming CuTPP and MgTPP, respectively. The project is supported by the DFG through FOR 1878 (funCOS).