1. Centre of Polymer Systems, University Institute, Tomas Bata University in Zlín, Třída T. Bati, 5678, CZ-76001 Zlín, Czech Republic
2. Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 16610 Prague, Czech Republic
3. NMR Research Unit, University of Oulu, P.O. Box 3000, FI-90014, Finland