Berlin 2015 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 89: Inorganic/Organic Interfaces: Molecular Switches
O 89.9: Vortrag
Donnerstag, 19. März 2015, 17:00–17:15, MA 043
Conformational switching of single tetraphenylmethane molecules on Au(111) studied by STM — •Jan Homberg1, Kevin Edelmann1, Marcin Lindner1, Michal Valasek1, Lukas Gerhard1, Marcel Mayor1,2, and Wulf Wulfhekel1,3 — 1Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), D-76131 Karlsruhe — 2Department of Chemistry, University of Basel, CH-4056 Basel — 3Physikalisches Institut, Karlsruhe Institute of Technology (KIT), D-76131 Karlsruhe
One of the main challenges in the field of molecular electronics is still the coupling of the molecules to a metallic electrode or substrate. To decouple functional units from the substrate, we follow the idea of tripodal carrier molecules. As a core structure we used tetraphenylmethane with sulfhydryl groups for anchoring. Various derivatives with varying head groups were deposited onto a Au(111) surface via spraying from solution and investigated by low temperature STM. Certain molecules can be switched by the STM tip between different stable conformations. Furthermore we report on the morphology and electronic properties of single molecules on the surface.