Regensburg 2007 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 28: Polymer Physics V
CPP 28.3: Vortrag
Donnerstag, 29. März 2007, 17:45–18:00, H40
Integrated spin-on barrier layers a reasonable idea? — •Mine Memesa1, Ya-Jun Cheng1, Jan Perlich2, Peter Müller-Buschbaum2, and Jochen Gutmann1,3 — 1Max-Planck Institute for Polymer Research, Ackermannweg 10, D-55128, Mainz, Germany — 2TU München, Physik-Department LS E13 James-Franck-Str. 1, 85747 Garching, Germany — 3Institute of Physical Chemistry, University Mainz, D-55099, Mainz, Germany
Titanium dioxide (TiO2) nanoparticles were prepared by using polystyrene block poly (ethyleneoxide) (PS-b-PEO) copolymer as a template. As a preliminary study whether poly (dimethylsiloxane) (PDMS) is a suitable polymeric replacement for barrier layers PDMS was spin coated over the TiO2 nanoparticles and subsequently etched away by oxygen plasma cleaning. The surface characteristics of the particles were investigated using Scanning Electron Microscopy (SEM) and photoluminescence (PL). The PL measurements indicated the formation of exciton traps close to the particle surface after plasma treatment. The stability of the TiO2 nanoparticles upon sealing with PDMS followed by etching of the polymer overcoating was confirmed with microbeam grazing incidence small angle x-ray scattering (μGISAXS) measurements.