Regensburg 2025 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 17: Poster Focus Session Molecular Nanostructures on Surfaces: On-Surface Synthesis and Single-Molecule Manipulation
O 17.8: Poster
Montag, 17. März 2025, 18:00–20:00, P2
LT-STM investigations of subphthalocyanine based vertical molecular rotors on Au (111) — •Franz Plate1, Natasha Khera1, Suchetana Sarkar1, Soyoung Park2,3, Ningwei Sun2,3, Ebru Cihan1, Dmitry Ryndyk1,4, Franziska Lissel2,3, and Francesca Moresco1 — 1Center for Advancing Electronics Dresden, TU Dresden, 01062 Dresden, Germany — 2Leibniz Institute of Polymer Research Dresden, TU Dresden, 01069 Dresden Germany — 3Institute of Applied Polymer Physics (IAPP) TU Hamburg, Kasernenstraße 12, 21073 Hamburg Germany — 4Professur für Theoretische Chemie, TU Dresden, 01062 Dresden, Germany
We present a vertical rotor based on borsubphthalocyaninchloride (SubPC) platforms adsorbed on Au(111), investigated by low temperature scanning tunneling microscopy. SubPC is a well-investigated molecule which is known to form well-ordered structures, to adsorb flat on the surface and to be highly mobile as a single molecule. The boron atom carries an axial ligand. In this study, SubPC was functionalized with different axial ligands, aiming to create a vertical molecular rotor. The adsorption behavior of SubPC functionalized with azobenzene and 2-methylnaphthalene after thermal evaporation and flash deposition on a cold (5K) surface is presented in high resolution STM images supported by density functional theory (DFT) simulations. In addition, the stabilization through co-deposited pure SubPC and SubPC functionalized with 2-methylnaphthalene is presented.
Keywords: SubPC; molecular rotors; single molecule; LT-STM; single molecule manipulation