1. Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, 16610 Prague 6, Czech Republic
2. Department of Physical Chemistry, University of Chemistry and Technology, 16628 Prague 6, Czech Republic
3. Faculty of Electrical Engineering, Czech Technical University in Prague, 16627 Prague 6, Czech Republic
4. Department of Chemistry, University of Colorado, Boulder, Colorado 80309-0215, United States
5. Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
6. Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
7. Department of Inorganic and Physical Chemistry, Ghent University, Krijgslaan 281 (S3), B-9000 Gent, Belgium