Regensburg 2010 – wissenschaftliches Programm
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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 59.90: Poster
Mittwoch, 24. März 2010, 17:45–20:30, Poster B1
STM study of the structual formation of C60 on a thiol tethered Au(111) surface — •Patrick Mehring, Axel Beimborn, and Carsten Westphal — Fakultät Physik - Technische Universität Dortmund, Otto-Hahn-Str. 4, D 44221 Dortmund, Germany
Since the discovery of fullerenes and their unique properties a large variety of potential applications was predicted. Different structures of fullerenes including ring, ball, and tube variations attracted attention especially in the fields of molecular electronics and nanotechnology. The understanding of the structural formation on different substrates is important for future applications of these carbon molecules. The influence of a methylthiol tethered Au(111) surface on the self assembly of C60 buckyballs was investigated by means of scanning tunneling microscopy. Methylthiol arranges in several structures on Au(111) depending on the monolayer coverage. C60 was prepared by evaporator deposition on two different striped phases of CH3S. Both exhibit domains with 3 distinct orientations but different line spacing between single molecule rows. Instead of the typical hexagonal orientation of C60 on noble metals, domains of a striped phase can be found. Single domains show 6 possible orientations on the CH3S monolayer. The spacing between C60 molecules varied depending on the orientation of the methylthiol layer. They are clearly located on top of the CH3S rows.