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TU Dresden » Faculty of Mechanical Science and Engineering » Institute for Materials Science » Chair of Materials Science and Nanotechnology

» presentations   » 2017.03.24

Imaging the electronic structure of on-surface generated acenes

Justus Krüger, Frank Eisenhut, Thomas Lehmann, José M. Alonso, Dmitry Skidin, Dolores Pérez, Enrique Guitián, Dmitry A. Ryndyk, Christian Joachim, Diego Peña, Francesca Moresco and Gianaurelio Cuniberti

DPG Frühjahrstagung der Sektion Kondensierte Materie (SKM)

2017.03.24; Dresden, Germany

We present the fabrication of acenes (polycyclic hydrocarbons formed by the linear fusion of several benzene rings) on metallic surfaces. In particular, scanning tunneling microscopy and spectroscopy of single hexacene molecules is performed to directly visualize the frontier orbital resonances and to capture their narrow energy gap. Due to the high reactivity of hexacene under ambient conditions, scanning probe investigations at the single molecule level could not be obtained so far. In this work, we proof the scalability of a recently introduced on-surface reaction [1] to generate and stabilize hexacene directly on Au(111) by making use of oxygen-containing precursors. In the last part of this talk, we analyze the electronic resonances of long acenes on Au(111) as function of their length.

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