SKM 2023 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 81: Oxide and Insulator Surfaces I: Adsorption and Reaction of Small Molecules
O 81.7: Vortrag
Donnerstag, 30. März 2023, 16:30–16:45, CHE 91
Tailoring photolytic reaction products by application of a low interacting rare gas decoupling layer — •Inga Langguth1, Julien Rowen2, Wolfram Sander2, and Karina Morgenstern1 — 1Chair of Physical Chemistry I, Ruhr-Universität Bochum, Germany — 2Chair of Organic Chemistry II, Ruhr-Universität Bochum, Germany
While carbene molecules are known to be highly reactive and short living reactants in gas phase, they are passivated on metal surfaces upon chemisorption. Thin solid rare gas films on coinage metal surfaces are a novel type of decoupling layer applicable for STM investigations. Thus, it is taken advantage of the low interacting chemical environment of xenon (Xe) monolayer on Ag(110) in order to investigate the photolytic reactions of classical carbenes. The reaction products of the carbene coupling formed on the Xe layer adsorbed on the metal are straightforwardly accessed by subsequent Xe desorption. Vast structural differences reveal that the reaction products formed on the Xe substantially differ from the species formed under the same conditions on the metal surface. Both reaction products are compared, revealing the tool function of the non-ionic, low interacting rare gas decoupling layer for tailoring reaction pathways.