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O: Fachverband Oberflächenphysik
O 73: Poster Metal and Semiconductor Substrates: Adsorption and Reactions of Small Molecules
O 73.2: Poster
Mittwoch, 19. März 2025, 18:00–20:00, P2
Role of the surface for adsorbate motors — •Bensu Günay Ramovic1, Grant Simpson1, Mats Persson2, and Leonhard Grill1 — 1Department of Physical Chemistry, University of Graz, 8010 Graz, Austria — 2Department of Chemistry, University of Liverpool, Liverpool L69 3BX, United Kingdom
Molecular motors have the ability to perform uni-directional rotation or translation. In addition to such motors in nature, for instance kinesin, artificial molecular motors have seen great developments in the last decades. They have been studied intensely in solutions by averaging methods, but these cannot resolve individual motors. We have studied molecular motors on metal surfaces by scanning tunneling microscopy under ultrahigh vacuum and cryogenic temperatures, allowing us to track the motion of single molecules. Metallic surfaces generally play an important role for physical/chemical processes in molecular adsorbates. Here, we investigate adsorbate motors [1] on different metal surfaces in order to elucidate the role of the substrate for the molecular motion. It turns out that even rather small differences - maintaining the same surface symmetry, but changing the elemental composition - strongly affects the molecular configuration and motion.
[1] Simpson, G. J., Persson, M., & Grill, L. (2023). Adsorbate motors for unidirectional translation and transport. Nature, 621(7977), 82-86.
Keywords: Molecular motors; Manipulation; Metallic Surface; STM