Regensburg 2007 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 7: POSTER: INTERNAL SYMPOSIUM Scattering Experiments
CPP 7.24: Poster
Montag, 26. März 2007, 16:00–18:00, Poster B
Microbeam GISAXS investigation of sol-gel templated nanocomposite films — •J. Perlich1, M. Memesa2, J.S. Gutmann2,3, S.V. Roth4, and P. Müller-Buschbaum1 — 1TU München, Physik-Department LS E13, James-Franck-Str. 1, D-85748 Garching (Germany) — 2Max-Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz (Germany) — 3Institute for Physical Chemistry, Johannes Gutenberg University, Jakob-Welder-Weg 10, D-55099 Mainz (Germany) — 4HASYLAB at DESY, Notkestr. 85, D-22603 Hamburg (Germany)
We focus on the creation of nanostructured TiO2 thin films, which are of great interest for many applications, due to their electrical performance. The performance is strongly dependent on the morphology of the nanocomposite films. For the preparation of the TiO2 nanocomposite films we combine the amphilic diblock-copolymer PS-b-PEO with an inorganic sol-gel chemistry. Under these conditions a so-called good-poor-solvent pair induced phase separation leads to the formation of the nanostructures by film preparation via spin-coating. The different morphologies can be controlled by the solvent concentration. In order to obtain crystalline TiO2 films as the final step calcination is conducted at higher temperature in air. For the investigation of the morphologies of the sol-gel templated nanocomposite films microbeam grazing incidence small angle x-ray scattering (μGISAXS) is performed at the synchrotron beamline BW4 of the DESY HASYLAB. The investigation is complemented by surface and thin film sensitive probes. We acknowledge financial support by the project MU 1487/5-1.