1. Centre of Polymer Systems, University Institute, Tomas Bata University in Zlín, Tomáše Bati 5678, Zlín 76001, Czech Republic
2. Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, Prague CZ-128 40, Czech Republic
3. Institute of Physics, Slovak Academy of Sciences, Dúbravská cesta 9, Bratislava SK-845 11, Slovakia