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O: Fachverband Oberflächenphysik

O 6: Organic molecules on inorganic substrates: Adsorption and growth I

O 6.7: Talk

Monday, March 9, 2026, 12:00–12:15, TRE/PHYS

Nanostructuring of organic radicals on cobalt surfaces — •Arkaprava Das and M. Benedetta Casu — Institute of Physical and Theoretical Chemistry, University of Tübingen, Tübingen, Germany

Organic radicals are potential candidates for groundbreaking applications like energy storage, quantum computing, and spintronics. To investigate the nature of the adsorption of the radical derivative molecules on cobalt surfaces, we investigate their electronic structure and morphology. The electronic structure at the interface is investigated by using X-ray photoelectron spectroscopy (XPS), and the morphology is studied with scanning electron microscopy. The radical/Co interface interactions have resulted in different nanostructures crucial for device fabrication, whereas changes in line shape of core level spectra confer direct evidence of changed electronic properties at the interface. Considering ecological requirements, we also endeavour to minimize the materials consumption by making the Co substrate reusable, which is in line with the principles of closed-loop circular economy.

Keywords: Radicals; electronic properties; nanostructures; photoelectron spectroscopy; morphology