Regensburg 2010 – scientific programme

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 36: Poster: Nanoparticles and Composite Materials

CPP 36.9: Poster

Wednesday, March 24, 2010, 17:30–19:00, Poster B2

Pt- and FePt- nanoparticles on the basis of emulsion techniques — •Achim Manzke¹, Stefan Wiedemann¹, Fabian Enderle¹, Alfred Plettl¹, Paul Ziemann¹, Eyk Schreiber², Ulrich Ziener², Nicolas Vogel³, Katharina Landfester³, Johannes Biskupek⁴, and Ute Kaiser⁴ — ¹Institut für Festkörperphysik, Universität Ulm, D-89069 Ulm — ²Institut für Organische Chemie III, Universität Ulm, D-89069 Ulm — ³MPI für Polymerforschung, D-55121 Mainz — ⁴Materialwissenschaftliche Elektronenmikroskopie, Universität Ulm, D-89069 Ulm

Metal-precursor loaded colloidal polystyrene (PS) particles in aqueous solution are produced by an emulsion and miniemulsion technique, respectively [1]. We will report on colloids loaded with Pt- as well as with Fe- and Pt-complexes. After deposition of a hexagonally ordered monolayer of PS spheres on top of a silicon substrate, optimized plasma and temper sequences are applied to obtain metallic nanoparticles which still exhibit the original lateral order. The metal content within a colloid defines the size of the final particle, which could be varied between 6 and 14 nm, so far. The interparticle distance is determined by the diameter of the starting PS-particles and was varied between 80 and 250 nm. Different process steps are investigated by HRSEM, HRTEM and XPS giving insight in the plasma- and annealing process and demonstrating e.g. the crystalline structure of the Pt- nanoparticles.

[1] A. Manzke et al. Adv. Mater. 19, 1337 (2007)