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O: Fachverband Oberflächenphysik
O 71: Poster Wednesday: Adsorption and Catalysis
O 71.6: Poster
Mittwoch, 3. April 2019, 17:45–20:00, Poster B2
Epiminotetracenes on Au(111) — •Frank Eisenhut1,2, Dmitry Skidin1,2, Fátima García3, Diego Peña3, Gianaurelio Cuniberti1,2,4, and Francesca Moresco1,2 — 1Center for Advancing Electronics Dresden, TU Dresden, 01062 Dresden, Germany — 2Institute for Materials Science, TU Dresden, 01062 Dresden, Germany — 3Centro de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782-Santiago de Compostela, Spain — 4Dresden Center for Computational Materials Science (DCMS), TU Dresden, 01062 Dresden, Germany
The introduction of substituents into the aromatic core has been proven to be a versatile tool in the generation of acenes. Within this study, we use a tetracene precursor with two embedded epimino-groups in the aromatic backbone, wehreas after moderate annealing one nitrogen-carbon bond can be cleaved or the complete group can be dissociated. This partial reaction has been proven with high-resolution STM images. While we could verify that the originated tetracene molecules with two of these new formed groups are strongly bonded to the surface and cannot be manipulated, we could show that the molecules with one nitrogen-containing side group after the reaction can be rotated around the nitrogen atom. Consequently, the molecules are anchored on Au(111) with nitrogen-gold bonds via the emerging side groups after the planarization and breaking of the bond.