1. J.
Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Dolejškova 3, CZ 182 23 Prague 8, Czech Republic
2. Department of Inorganic Technology, Faculty of Chemical Technology, University of Pardubice, Doubravice 41, Pardubice, CZ 532 10, Czech Republic
3. Institute
of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovsky sq. 2, CZ 162 06 Prague 6, Czech Republic