1. Department of Physical Chemistry, Palacký University, Svobody 26, 771 46 Olomouc, Czech Republic, Department of Microbiology, Faculty of Medicine, Palacký University, Olomouc Hněvotínská 3, 77515 Olomouc, Czech Republic Institute of Physics of Materials, Academy of Sciences of the Czech Republic, Žižkova 22, 61662 Brno, Czech Republic, and Chemistry Department, Florida Institute of Technology, 150 West University Boulevard, Melbourne, Florida 32901