1. Institute of Chemistry, University of Tartu, Ravila 14a, 50411 Tartu, Estonia
2. National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia
3. Institute of Physics, University of Tartu, Wilhelm Ostwald Street 1, 50411 Tartu, Estonia
4. Institute of Solid State Physics, University of Latvia, Kengaraga 8, 1063 Riga, Latvia
5. Nanomaterials Laboratory, Institute of Systems, Information Technologies and Nanotechnologies, 819-0388 Fukuoka, Japan
6. Siberian Branch of Russian Academy of Sciences, A. E. Favorsky Irkutsk Institute of Chemistry, 1 Favorsky Street, 664033 Irkutsk, Russian Federation
7. Research Laboratory of Functional Materials Technologies, Faculty of Materials Science and Applied Chemistry, Riga Technical University, P. Valdena 3/7, 1048 Riga, Latvia