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O: Fachverband Oberflächenphysik

O 68: Poster Session V: Poster to Mini-Symposium: Manipulation and control of spins on functional surfaces I

O 68.1: Poster

Wednesday, March 3, 2021, 10:30–12:30, P

Stability of radical-functionalized gold surfaces by self-assembly and on-surface chemistry — •Tobias Junghöfer, Ewa Malgorzata Nowik-Boltyk, and Maria Benedetta Casu — Eberhard Karls Universität Tübingen, Institut für Physikalische und Theoretische Chemie, 72076 Tübingen, Germany

Organic radical thin films are of great interest for organic electronics such as spin filtering devices, data storage devices, and as quantum bits for quantum computing devices. Here we present the functionalisation of a gold substrate by using a derivative of the perchlorotriphenylmethyl (PTM) radical. PTM is a very chemically and thermally stable radical. We investigate the gold/PTM derivative interface by using soft X-ray techniques, such as X-ray photoelectron spectroscopy (XPS) and near-edge X-ray absorption fine structure (NEXAFS) spectroscopy. Our results show that the functionalisation is successful under specific preparation conditions. The radical is still intact and keeps its magnetic character at the interface. Our findings are a significant step forward on the implementation of organic radicals in molecularbased devices with different properties and applications as energy, sensing, imaging, memories, and spintronics.