SurfaceScience21 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 89: Poster Session VII: Organic molecules on inorganic substrates: electronic, optical and other properties III
O 89.1: Poster
Donnerstag, 4. März 2021, 10:30–12:30, P
Single-molecule rotation and translation — •Grant J. Simpson1, Samuel Hajek1, Víctor García-López2, A. Daniel Boese1, James Tour2, and Leonhard Grill1 — 1University of Graz, Graz, Austria — 2Rice University, Houston, TX, USA
Control of the orientation and the rotation direction of a single molecule is crucial to the understanding of molecular machines. In turn, the rotational orientation of a molecule can affect the efficiency of translation in a particular direction. Here, we report how single dipolar nanocar-type molecules adsorbed on a Ag(111) surface can be rotated with 100% directionality using the electric field of a scanning tunnelling microscope [1]. This high control relies on a specific interaction of the molecule with a silver surface atom and can be disrupted either by introducing a further adatom or by changing the chemical structure of the molecule. The influence of chemical modification on the nanocar-surface interaction is also explored on different noble metal surfaces in view of the upcoming nanocar race in early 2022.
[1] Simpson, G.J., García-López, V., Boese, A.D., Tour, J., Grill, L., Nat. Commun., 10, 4631 (2019)