Regensburg 2010 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 14: Metal substrates: Adsorption of organic / bio molecules II
O 14.9: Vortrag
Montag, 22. März 2010, 17:00–17:15, H36
STM study of fullerene molecules on alcanethiol based monolayers — •Axel Beimborn1, Patrick Mehring1, Daniel Weier1,2, and Carsten Westphal1,2 — 1Fakultät Physik - Technische Universität Dortmund, Otto Hahn-Str. 4, D 44221 Dortmund, Germany — 2DELTA - Technische Universität Dortmund, Maria-Goeppert-Mayer-Str. 2, D 44227 Dortmund, Germany
Self assembled monolayers (SAMs) of organic molecules on metal surfaces are of great interest for the development of nanoscale mechanic and electric devices. The adsorption of alkanethiolate SAMs on Au(111) has been extensively investigated in a large number of studies. Another system with increasing research activities in the last years are C60 fullerenes which have potential applications in several fields of nanotechnology. In this work the assembly of C60 buckyballs on a thiolated Au(111) surface was studied with in situ STM investigations. This allows new arrangements of physisorbed buckyballs on metal surfaces. CH3S on gold was prepared exposuring a clean Au(111) surface to different partial preassures of Dimethyldisulfid (DMDS) yielding SAMs with different surface orientations. On these monolayers C60 buckyballs were evaporated. Instead of the standard close packed hexagonal arrays the C60 buckyball monolayers form striped phases depending on the underlying CH3S phases.