Regensburg 2010 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

O: Fachverband Oberflächenphysik

O 59: Poster Session II (Nanostructures at surfaces: Dots, particles, clusters; Nanostructures at surfaces: arrays; Nanostructures at surfaces: Wires, tubes; Nanostructures at surfaces: Other; Plasmonics and nanooptics; Metal substrates: Epitaxy and growth; Metal substrates: Solid-liquid interfaces; Metal substrates: Adsoprtion of organic / bio molecules; Metal substrates: Adsoprtion of inorganic molecules; Metal substrates: Adsoprtion of O and/or H; Metal substrates: Clean surfaces; Density functional theory and beyond for real materials)

O 59.81: Poster

Mittwoch, 24. März 2010, 17:45–20:30, Poster B1

Thin vacuum deposited films of charge transfer compounds on the Au(111) surface investigated by SPA-LEED — •Benjamin Fiedler, Oliver Bauer, and Moritz Sokolowski — Institut für Physikalische und Theoretische Chemie der Universität Bonn

Thin films of different charge transfer compounds were prepared on the Au (111) surface and studied by spot profile analysis LEED (SPA-LEED). For tetrathiafulvalene / tetracyanoquinone (TTF/TCNQ) the films were obtained via two different routes. In the first, we prepared the films by vacuum sublimation from a single crucible containing the charge transfer compound. In the second, the single components (TTF and TCNQ) were evaporated from two different crucibles. Findings of both preparation methods are compared with each other. From the LEED patterns a unit cell of the monolayer was derived and is compared with those unit cells concluded from earlier STM investigations [1,2]. We also studied the larger molecule tetrathiatetracene (TTT) as donor component in combination with dimethyl-dicyanoquinondiimine (DCNQI) and TCNQ as acceptors. First results are presented.

[1] M. D. Ward, J. Am. Chem. Soc. 1994, 116, 6806

[2] J. I. Pasqual, Phys. Rev. Lett. 100, 156805 (2008)