Regensburg 2025 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
O: Fachverband Oberflächenphysik
O 17: Poster Focus Session Molecular Nanostructures on Surfaces: On-Surface Synthesis and Single-Molecule Manipulation
O 17.10: Poster
Montag, 17. März 2025, 18:00–20:00, P2
Chemical activation of a single melamine molecule via isomerization and metalation with a copper atom — •Karl Rothe1, Manex Alkorta2, Nicolas Néel1, Thomas Frederiksen3, and Jörg Kröger1 — 1Institut für Physik, Technische Universität Ilmenau, D-98693 Ilmenau — 2Centro de Física de Materiales and Fisika Aplikatua Saila, University of the Basque Country, E-20018 Donostia - San Sebastián — 3Donostia International Physics Center, E-20018 Donostia San Sebastián and IKERBASQUE, Basque Foundation for Science, E-48011 Bilbao
The entire sequence of chemically activating an educt, identifying its reactive site, running a chemical reaction and quantifying the involved forces and energies was performed by means of scanning probe methods. The organic molecule melamine adsorbed on Cu(100) serves as a single-molecule model system for activation via tautomerization and consecutive metalation with a single Cu atom. An atomic force microscope with a CO-decorated tip probes the reactive sites of the isomers at which the subsequent single metal atom transfer is initiated using a Cu-terminated probe. Following the interaction between the mutually approached reaction partners up to the verge of chemical-bond formation enables the access to the force and energy involved in the single-molecule metalation process. Total-energy calculations from density functional theory support the experimental findings and illustrate the structure of the reactants.
Funding by the DFG through KR 2912/18-1 and the BMBF through Forlab is acknowledged.
Keywords: Tautomerization; Metalation; Single molecules; Atomic force microscopy and spectroscopy; Density functional theory