Berlin 2024 – scientific programme
Parts | Days | Selection | Search | Updates | Downloads | Help
O: Fachverband Oberflächenphysik
O 87: Focus Session: Molecular Nanostructures on Surfaces: On-Surface Synthesis and Single-Molecule Manipulation III
O 87.5: Talk
Thursday, March 21, 2024, 16:15–16:30, HE 101
An alternative on-surface synthesis approach on Ag(111) studied by STM and XPS — •Paul Schweer1, Christoph Vonnemann2, Stefan Huber2, and Karina Morgenstern1 — 1Chair of Physical Chemistry I, Ruhr University of Bochum, Germany — 2Chair of Organic Chemistry II, Ruhr University of Bochum, Germany
On-surface synthesis uses planar precursors containing carbon atoms that are sp2 hybridized and halogen functionalized to construct 2D structures by thermal activation. The mechanism includes the cleavage of the carbon-halogen bond, followed by an intermolecular C-C coupling. In this talk, we will present an alternative approach based on a polyaromatic molecule with a single sp3 hybridized fluorinated carbon atom as the reactive center. The reaction is induced by thermal and photoactivation on Ag(111). We describe the self-assembly of the molecules and the mechanisms of their on-surface reaction by means of scanning tunneling microscopy and X-ray photoelectron spectroscopy investigations. These results give insights into an intramolecular reaction pathway that produces single cyclized structures.