Bouatou, M.Montenegro-Pohlhammer, NicolásSánchez de Armas, María RocíoBarthel, C.Jiménez Calzado, CarmenGruber, M.2025-07-282025-07-282025Bouatou, M., Montenegro Pohlhammer, N., Sánchez de Armas, M.R., Barthel, C., Jiménez Calzado, C. y Gruber, M. (2025). Thermally-induced Covalent Coupling of Cobalt Porphyrin Molecules on Au(111). Journal of Physics: Condensed Matter, 37 (23), 235001. https://doi.org/https://doi.org/10.1088/1361-648X/add6fe.1361-648X0953-8984https://hdl.handle.net/11441/175734We investigated the thermally induced covalent coupling of cobalt porphyrin (CoP) molecules on an Au(111) surface using scanning tunnelling microscopy and first-principle calculations. While CoP molecules deposited at room temperature remain isolated due to electrostatic repulsion, annealing the substrate leads to their aggregation into chain-like structures with covalent bonding. Three distinct bonding motifs are identified, with calculations revealing weak magnetic coupling between the S = 1/2 Co ions. This work evidences a straightforward method for synthesising multinuclear complexes with magnetically coupled spins on surfaces, offering potential applications in molecular spintronics.application/pdf11 p.engAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/Scanning tunnelling microscopyHomocouplingSelf-assemblyPorphyrininfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccesshttps://doi.org/10.1088/1361-648X/add6fe