SurfaceScience21 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 62: Poster Session V: Organic molecules on inorganic substrates: electronic, optical and other properties I

O 62.9: Poster

Mittwoch, 3. März 2021, 10:30–12:30, P

Controlled Manipulation of Single Molecules on an Ag(111) Surface — •Julia Lanz, Donato Civita, and Leonhard Grill — Single Molecule Chemistry, Institute of Chemistry, University of Graz

Thermal motion of molecules at surfaces is a stochastic process which makes it complicated to control the molecular trajectory. Here, we have used scanning tunneling microscopy under ultrahigh vacuum conditions to manipulate individual molecules to move controllably across a flat Ag(111) surface, kept at low temperatures of about 7 K. The controlled motion of single molecules gives deeper understanding of the relation between molecular motion and the chemical as well as geometrical properties of the molecules and the surface. Vertical manipulation provides insight into the dependence of molecular motion on conformational changes. Upon lateral manipulation the molecules follow the STM tip in a precise fashion. This occurs preferably in pairs, which will be discussed in view of intermolecular interaction.