Dresden 2020 – scientific programme

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O: Fachverband Oberflächenphysik

O 73: Organic Molecules on Inorganic Substrates V: Adsorption, Growth and Networks

O 73.10: Talk

Wednesday, March 18, 2020, 17:30–17:45, TRE Phy

Adsorption Behaviour of Benzohydroxamic Acid on TiO2(110) — •Julia Köbl, Elmar Kataev, Daniel Wechsler, Lisa-Marie Augustin, Hans-Peter Steinrück, and Ole Lytken — Lehrstuhl für Physikalische Chemie II, Universität Erlangen-Nürnberg, Egerlandstraße 3, D-91058

We are aiming for a deeper understanding of basic interactions between organic molecules and oxide surfaces, as these interfaces are apparent in many electronic devices, such as dye-sensitized solar cells and organic field effect transistors. Thus, we studied the adsorption properties of the model system benzohydroxamic acid on rutile TiO2 (110)-(1x1) as a function of coverage and temperature. This molecule is an interesting candidate for anchoring larger organic molecules like porphyrins on oxide surfaces. Using Synchrotron Radiation Photoelectron Spectroscopy (SRPES), we studied the bonding mechanism and thermal stability of benzohydroxamic acid, which was deposited by evaporation. From SRPES, we can identify different species in the N 1s spectra. The results are compared to our previous studies on phosphonic acid. Supported by the DFG through FOR 1878 (funCOS).