Berlin 2012 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 21: Poster: Wetting, Micro and nanofluidics
CPP 21.19: Poster
Mittwoch, 28. März 2012, 11:00–13:00, Poster A
Influence of surface modification on sputter deposition — •Berit Heidmann1,2, Matthias Schwartzkopf1, Mottakin M. Abul-Kashem1, Gunthard Benecke1,3, Adeline Buffet1, Denise Erb1, Gerd Herzog1,2, Ezzeldin Metwalli4, Jan Perlich1, Andre Rothkirch1, Kai Schlage1, Peter Müller-Buschbaum4, Ralf Röhlsberger1, Wilfried Wurth2, and Stephan V. Roth1 — 1Deutsches Elektronen-Synchritron (DESY), Notkestr. 85, D-22607 Hamburg — 2Univ. Hamburg, Inst. für Exp., Luruper Chaussee 149, 22761 Hamburg — 3MPIKG, Dep. of Biomat., Am Mühlenberg 1, 14424 Potsdam-Golm — 4TU München, Physik Department E13, James-Franck-Str. 1, 85748 Garching
Polymer-metal-nanocomposites are important for technical applications,e.g solar cells [1]. Metal sputter deposition on polymer templates represents one of the most efficient processes to obtain nanostructured composites. The crucial interaction is that of the metal atom with the polymeric material. We investigated in-situ the growth of gold cluster on top of these functionalized silanized silicon surfaces during sputter deposition under conditions similar to industrial processing. Using in-situ grazing incidence small-angle X-ray scattering, we show that due to different reaction mechanisms (chemisorption and physisorption) between the individual gold atom and the functional group yield different cluster growth kinetics, which in th case of thiol groups leads to the fast deposition of uniform gold layers.However, this is not the case in presence of phenyl groups due to their ability to repel gold atoms. [1] Kaune et al., ACS Apl. Mater. & Interfaces, 1, 353 (2009)