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Regensburg 2016 – scientific programme

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O: Fachverband Oberflächenphysik

O 34: Nanostructures at Surfaces II

O 34.8: Talk

Tuesday, March 8, 2016, 12:15–12:30, H6

On-surface fabrication of acenes — •Justus Krüger1, Niko Pavliček2, Frank Eisenhut1, José M. Alonso3, Dolores Pérez3, Enrique Guitián3, Thomas Lehmann2, Dmitry Ryndyk2, André Gourdon4, Gerhard Meyer2, Leo Gross2, Diego Peña3, Gianaurelio Cuniberti1, and Francesca Moresco11Institute for Materials Science, Max Bergmann Center of Biomaterials, and Center for Advancing Electronics Dresden, TU Dresden, 01069 Dresden, Germany — 2IBM Research-Zurich, 8803 Rüschlikon, Switzerland — 3CIQUS and Departamento de Química Orgánica, Universidade de Santiago de Compostela. Santiago de Compostela 15782, Spain — 4CEMES, UPR 8011 CNRS, Nanosciences Group, 29 Rue J. Marvig, P.O. Box 94347, 31055 Toulouse, France

We present the on-surface reduction of acene-derivatives to form genuine acenes (hydrocarbons with linearly fused benzene rings) on Au(111) and Cu(111). The conversion is achieved by scanning tunneling microscopy (STM) tip-induced manipulation as well as thermal activation and is conclusively demonstrated by means of atomic force microscopy with atomic resolution. This observed transformation may pave the way for the on-surface preparation and stabilization of even higher acenes.

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