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O: Fachverband Oberflächenphysik

O 51: Poster Session - Metal Substrates: Adsorption and Reaction of Small Molecules

O 51.1: Poster

Dienstag, 17. März 2020, 18:15–20:00, P2/1OG

Electronic Structure of a Highly Ordered B₃N₃-Doped Nanographene Monolayer on Au(111) — •Axel Belser¹, Katharina Greulich¹, Holger F. Bettinger², Heiko Peisert¹, and Thomas Chassé¹ — ¹Institute of Physical and Theoretical Chemistry, University of Tuebingen — ²Institute of Organic Chemistry, University of Tuebingen

Electronic interface properties and the initial growth of hexa-peri-hexabenzocoronene with a borazine core (BN-HBC) on Au(111) have been studied by using X-ray photoelectron spectroscopy (XPS), scanning tunneling microscopy (STM) and low energy electron diffraction (LEED). The results are compared to hexa-peri-benzocoronene (HBC). Both molecules form well-defined monolayers, in particular after annealing of 2-3 monolayers to 300 ^∘C. Valuable information about the electronic structure is obtained by a variation of the tunneling voltage. The distribution of the HOMO and the LUMO determined tentatively by STM is in good agreement to DFT calculations.