Regensburg 2010 – scientific programme

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 36: Poster: Nanoparticles and Composite Materials

CPP 36.15: Poster

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

Preparation and characterization of nanolayered gold-polyelectrolyte composites — •Steffen Mitzscherling, Wolfram Leitenberger, Mareike Kiel, and Matias Bargheer — University of Potsdam, Germany

Composite materials made of gold nanoparticles and polyelectrolyte nanolayers can be prepared by spin-coating or layer-by-layer deposition. We have prepared stratified multilayer-films with a spatial period of  10 nm. The films show very low surface roughness ( 0.5 nm RMS) and the nanoparticle-layers are well separated by layers containing no gold. These samples were analyzed with X-ray reflectometry, AFM and absorption measurements in the UV-visible range. Bragg-peaks up to the fifth order demonstrate the periodic layering of the sample and AFM shows the packing density of gold particles in the plane. We compare the results obtained by spin-coating and layer-by-layer deposition and discuss the refractive index of the composite material.