1. Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland
2. Silesian Center for Education and Interdisciplinary Research, 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
3. Leibniz Institute of Polymer Research Dresden, Hohe Str. 6, D-01069 Dresden, Germany
4. Institute of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice, Poland