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O: Fachverband Oberflächenphysik
O 3: Metal Substrates: Adsorption and Reaction of Small Molecules I
O 3.1: Vortrag
Montag, 27. März 2023, 10:30–10:45, CHE 91
A Nanocar and rotor in a molecule — •Kwan Ho Au-Yeung1, Suchetana Sarkar1, Tim Kühne1, Oumaima Aiboudi2, Dmitry A. Ryndyk3,4, Roberto Robles5,6, Nicolas Lorente5,6, Franziska Lissel2, Christian Joachim7, and Francesca Moresco1 — 1Center for Advancing Electronics Dresden, TU Dresden, 01062 Dresden, Germany — 2Leibniz-Institut für Polymerforschung Dresden e.V., 01069 Dresden, Germany, and Faculty of Chemistry and Food Chemistry, TU Dresden, 01062 Dresden, Germany — 3Institute for Materials Science, TU Dresden, 01062 Dresden, Germany — 4Theoretical Chemistry, TU Dresden, 01062 Dresden, Germany — 5Centro de Física de Materiales CFM/MPC (CSIC-UPV/EHU), 20018 Donostia-San Sebastián, Spain — 6Donostia international physics center, 20018 Donostia-San Sebastian, Spain — 7GNS & MANA Satellite, CEMES, CNRS, 29 rue J. Marvig, 31055 Toulouse, France
Depending on its adsorption conformation on the Au(111) surface, a zwitterionic single molecule machine works in two different ways under STM voltage pulses: It is a unidirectional single molecule-rotor while anchoring on the surface; It is a fast-drivable molecule-vehicle (nanocar) while physisorbed. By tuning the molecular coverage, the conformation of the molecule can be selected as a rotor or a nanocar. The movement triggered by inelastic tunneling excitation is investigated under the same experimental conditions for the unidirectional rotation of the rotor and the directed movement of the nanocar.