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O: Fachverband Oberflächenphysik
O 121: Solid-Liquid Interface IV: Structure and Spectroscopy
O 121.2: Vortrag
Freitag, 20. März 2020, 10:45–11:00, TRE Phy
Wet-chemically prepared porphyrin-layers on rutile TiO2(110) — •Daniel Wechsler1, Cynthia Carolina Fernández2, Julia Köbl1, Hans-Peter Steinrück1, Federico José Williams2, and Ole Lytken1 — 1Chair of Physical Chemistry II, University Erlangen-Nürnberg, 91058 Erlangen, Egerlandstraße 3, Germany — 2Department of Inorganic, Analytical and Physical Chemistry, University of Buenos Aires, Buenos Aires C1428EHA, Argentina
Porphyrins are large organic molecules that are interesting for different applications like photovoltaic cells, gas sensors or in catalysis. For many of these applications the interactions between adsorbed molecules and surfaces play a crucial role.
Recent surface science publications focused mainly on systems that were prepared by standard ultra-high vacuum (UHV) procedures, like sputtering, annealing and physical vapor deposition. This results in well-defined and impurity-free samples but neglects effects arising from the interaction with solutions or air occurring during a preparation process outside of UHV.
In this study, we present a way to wet-chemically prepare porphyrin layers on rutile TiO2(110) surfaces in a reproducible way while keeping the amount of impurities at a minimum. X-ray photoelectron spectroscopy measurements show the differences between in-solution and pure UHV prepared samples.
The project is supported by the DFG through FOR 1878 (funCOS).