Berlin 2008 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 13: Colloidal and Nanoparticles
CPP 13.9: Vortrag
Dienstag, 26. Februar 2008, 17:15–17:30, C 264
Metal-precursor loaded polymer-particles: a basis for ordered arrays of nanoparticles — •Achim Manzke1, Fabian Enderle1, Stefan Wiedemann1, Christian Pfahler1, Alfred Plettl1, Paul Ziemann1, Eyk Schreiber2, Ulrich Ziener2, and Katharina Landfester2 — 1Institut für Festkörperphysik, Universität Ulm, D-89069 Ulm — 2Institut für Organische Chemie III, Universität Ulm, D-89069 Ulm
The fabrication of metal precursor loaded colloidal polystyrene (PS) particles in aqueous solution is carried out by a miniemulsion technique. We will report on colloids loaded with Pt-, Fe- as well as with Fe- and Pt-complexes. Dropped on hydrophilic Si substrates, hexagonally ordered monolayers of colloids are generated. By applying optimized plasma and temper processes, metallic nanoparticles can be obtained which still exhibit the original ordered arrangement. The metal content in the colloid defines the size of the final particle, which could be varied between 6 and 14 nm, so far. The interparticle distances is determined by the diameter of the starting PS-particles and could be varied between 80 and 230 nm. This new technique has the potential to extend the limits of the micellar technique [1] regarding the particle distance and order.
[1] G. Kästle et al. , Adv. Funct. Mat. 13, 853 (2003)
[2] A. Manzke et al. Adv. Mater. 19, 1337 (2007)