Regensburg 2022 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 55: Poster Wednesday: Organic Molecules at Surfaces 2
O 55.3: Poster
Mittwoch, 7. September 2022, 18:00–20:00, P4
adsorption structure and mechanical properties of single nonahelicene molecules on Ag(110) — •Max Halbauer1,2, Akitoshi Shiotari1, Takashi Kumagai3, Kyoko Nozaki2, and Martin Wolf1 — 1Department of Physical Chemistry, Fritz-Haber-Institute of the Max-Planck-Society, Faradayweg 4-6, 14195 Berlin, Germany — 2Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, 113-8656 Tokyo, Japan — 3Center for Mesoscopic Sciences, Institute for Molecular Science, 38 Nishigo-Naka, Myodaiji, 444-8585 Okazaki, Japan
Helicenes are a class of compounds that has received great attention due to their chiroptical properties, while the single-molecule mechanical behavior has often been overlooked. Scanning tunneling microscopy (STM) and atomic force microscopy (AFM) measurements of nonahelicene ([9]H) molecules on Ag(110) were performed in order to address this issue. The adsorption structure of isolated and aggregated [9]H molecules on the surface is revealed by high-resolution imaging. Interactions of the molecule with a probe tip are quantified by force curve measurements and a comparison with co-adsorbed coronene gives insights into the impact of the helical backbone on the mechanical properties.