Dresden 2017 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 91: Nanostructures at Surfaces: Molecular Systems I

O 91.2: Vortrag

Donnerstag, 23. März 2017, 10:45–11:00, REC/PHY C213

Light-Induced Translation of Motorized Molecules on a Surface — •Alex Saywell1,2, Anne Bakker1, Johannes Mielke1, Takashi Kumagai1, Martin Wolf1, Victor García-López3, Pinn-Tsong Chiang3, James M. Tour3, and Leonhard Grill1,41Department of Physical Chemistry, Fritz-Haber-Institute of the Max-Planck Society, 14195 Berlin, Germany. — 2School of Physics & Astronomy, The University of Nottingham, United Kingdom. — 3Rice University, Houston, Texas 77005, United States. — 4Department of Physical Chemistry, University of Graz, Heinrichstrasse 28, 8010 Graz, Austria.

A key component of molecular nanotechnology are molecular machines that can perform controlled work. The motion of such machines should be triggered remotely in order to address a large number of molecules at the same time, with light being an attractive stimulus as a single source. Here, we report the photo-induced translation of molecular machines across a surface by characterizing single molecules before and after illumination. Illumination of molecules containing a motor unit results in an enhancement in the diffusion of the molecules. The effect vanishes if an incompatible photon energy is used or if the motor unit is removed from the molecule, revealing that the enhanced motion is due to the presence of the wavelength-sensitive motor in each molecule.

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