1. Institute of Organic Chemistry and Technology; Faculty of Chemical Technology, University of Pardubice; Studentská 573 Pardubice 532 10 Czech Republic
2. Department of Physics; University of Patras; GR-26504 Patras Greece
3. Foundation of Research and Technology Hellas; Institute of Chemical Engineering Sciences (FORTH/ICE-HT); Stadiou Str. P.O. Box 1414 Rio-Patras Greece
4. Department of Analytical Chemistry, Faculty of Chemical Technology; University of Pardubice; Studentská 573 Pardubice 53210 Czech Republic