1. Institute of Polymer Science, Johannes Kepler University Linz, Altenberger Strasse
69, A-4040 Linz, Austria
2. Institute of Analytical Chemistry, Johannes Kepler University Linz, Altenberger Strasse
69, A-4040 Linz, Austria
3. Institute of Polymer Chemistry, Johannes Kepler University Linz, Welser Strasse 42,
A-4060 Leonding, Austria