title: Azobenzene-containing triazatriangulenium adlayers on Au(111): structural and spectroscopic characterization.
abstract: Adlayers of different azobenzene-functionalized derivatives of the triazatriangulenium (TATA) platform on Au(111) surfaces were studied by scanning tunneling microscopy (STM), X-ray photoelectron spectroscopy (XPS), gap-mode surface-enhanced Raman spectroscopy (gap-mode SERS), and cyclic voltammetry (CV). The chemical composition of the adlayers is in good agreement with the molecular structure, i.e., different chemical groups attached to the azobenzene functionality were identified. Furthermore, the presence of the azobenzene moieties in the adlayers was verified by the vibration spectra and electrochemical data. These results indicate that the molecules remain intact upon adsorption with the freestanding functional groups oriented perpendicularly to the TATA platform and thus also to the substrate surface.
authors.affiliation: Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität zu Kiel, Leibnizstr. 19, 24118 Kiel, Germany.
authors.forename: Ulrich
authors.initials: U
authors.lastname: Jung
authors.forename: Sonja
authors.initials: S
authors.lastname: Kuhn
authors.forename: Ursula
authors.initials: U
authors.lastname: Cornelissen
authors.forename: Felix
authors.initials: F
authors.lastname: Tuczek
authors.forename: Thomas
authors.initials: T
authors.lastname: Strunskus
authors.forename: Vladimir
authors.initials: V
authors.lastname: Zaporojtchenko
authors.forename: Jens
authors.initials: J
authors.lastname: Kubitschke
authors.forename: Rainer
authors.initials: R
authors.lastname: Herges
authors.forename: Olaf
authors.initials: O
authors.lastname: Magnussen