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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 36: Poster: Nanoparticles and Composite Materials
CPP 36.9: Poster
Mittwoch, 24. März 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)