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O: Fachverband Oberflächenphysik
O 6: Poster Session I: Organic molecules on inorganic substrates: Adsorption and growth I
O 6.3: Poster
Monday, March 1, 2021, 10:30–12:30, P
Adsorption Behavior of Benzohydroxamic Acid on Rutile TiO2(110) — •Julia Köbl1, Cynthia C. Fernández2, Elmar Kataev1, Daniel Wechsler1, Lisa-Marie Augustin1, Nataliya Tsud3, Stefano Franchi3, Federico J. Williams2, Hans-Peter Steinrück1, and Ole Lytken1 — 1University of Erlangen-Nürnberg, Erlangen, Germany — 2Universidad de Buenos Aires, Pabellón 2, Buenos Aires, Argentina — 3Elettra-Sincrotrone Trieste, Trieste, Italy
Interfaces between organic molecules and oxide surfaces are present in many devices, such as dye-sensitized solar cells and organic field-effect transistors. The organic molecules are often covalently bonded to the oxide surface using specific anchor groups. Using synchrotron-radiation photoelectron spectroscopy, we will focus on how one of these anchor groups, hydroxamic acid, interacts with the rutile TiO2(110)-(1x1) surface as a function of coverage, temperature, and deposition method. Hydroxamic acid is an interesting anchor group, because it is more stable than carboxylic acid, especially over a wide pH range, and more resistant towards hydrolysis. Benzohydroxamic acid can be evaporated intact in ultrahigh vacuum, and we will compare the behavior of both evaporated and solution-deposited molecules. Supported by the DFG through FOR 1878 (funCOS).