Regensburg 2019 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 19: Poster Monday: Organic Molecules on Inorganic Surfaces
O 19.2: Poster
Montag, 1. April 2019, 17:45–20:00, Poster F
Adsorption Geometry of 2-Iodotriphenylene on Ag(111) — •Alexander Ihle1, Daniel Martin-Jimenez1, Daniel Ebeling1, Hermann Wegner2, Tobias Schlöder3, Doreen Mollenhauer3, and André Schirmeisen1 — 1Institute of Applied Physics, Justus Liebig University Giessen, Germany — 2Institute of Organic Chemistry, Justus Liebig University Giessen, Germany — 3Institute of Physics and Chemistry, Justus Liebig University Giessen, Germany
On-surface chemistry is a powerful tool for building covalent molecular structures such as chains, networks, or graphene nanoribbons [1, 2]. In particular, the catalytic properties of the metal substrate as well as the 2D confinement facilitate the synthesis of new structures that are not accessible via solution chemistry. In order to control the bottom-up formation process precise knowledge about the adsorption geometry of the molecular precursors is needed since this will help to understand the reaction mechanisms in detail. Here we studied the adsorption geometry of 2-iodotriphenylene on Ag(111). By using low temperature atomic force microscopy with CO-functionalized tips we are able to identify the adsorption position and angles with high precision. Only two orientations are observed on the surface which is attributed to relatively strong molecule-substrate interactions.
[1] Cai, J. et al. Nature 466, 470-473 (2010)
[2] Grill, L. et al. Nature Nanotechnology 2, 687-691 (2007)