1. Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic, http://www.upce.cz/english/fcht/jlssch.html
2. Present address: Joint Laboratory of Solid State Chemistry, Studentska 95, 53210 Pardubice, Czech Republic
3. Charles University in Prague, Faculty of Mathematics and Physics, Department of Chemical Physics and Optics, Ke Karlovu 3, 121 16 Prague 2, Czech Republic
4. Faculty of Chemical Technology, University of Pardubice, 532 10 Pardubice, Czech Republic