1. Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, 783 71 Olomouc, Czech Republic
2. Institute of Physics, Czech Academy of Sciences, 162 00 Prague, Czech Republic
3. Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, 162 00 Prague, Czech Republic
4. J. Heyrovský Institute of Physical Chemistry, Czech Academy of Sciences, 182 23 Prague, Czech Republic
5. Department of Organic Chemistry, Charles University, 128 00 Prague, Czech Republic