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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 Gutmann^1,3 — 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.