Berlin 2012 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 2: Nanoparticles and Composite Materials

CPP 2.5: Vortrag

Montag, 26. März 2012, 10:30–10:45, C 243

Assembly of nanoparticles on hard surfaces and surface-grafted polyelectrolyte brushes — •Züleyha Yenice and Regine von Klitzing — Technische Universität Berlin, Stranski-Laboratorium, Department of Chemistry, Strasse des 17. Juni 124 D-10623 Berlin, Germany

Self-assembly of nanoparticles using modified surfaces like polymer brushes, surface grafted molecular and macromolecular gradients attract great interest in recent years [1,2].

Here, we present our studies on self-assembly of nanoparticles on bare silicon wafer and wafers modified by PDMAEMA brushes. PDMAEMA is a weak polyelectrolyte with pH dependent properties which gives us space to do further modifications on this brushes. We also present our effort to get a better understanding of the particle interpenetration into the polyelectrolyte brushes by investigating the effect of different brush lengths and different sizes of nanoparticles using x-ray reflectivity, ellipsometry and atomic force microscopy.

[1] J. Genzer and R. R. Bhat, Langmuir, Vol. 24, No. 6, 2008

[2] R. R. Bhat et al. Nanotechnology, 14 (2003) 1145-1152