1. Faculty of Chemistry, University of Wroclaw, 50-383 Wroclaw, Poland
2. Department of Chemistry, Taras Shevchenko National University of Kyiv, 64 Volodymyrska Str., 01601 Kiev, Ukraine
3. “Poni Petru” Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda 41A, 700487 Iasi, Romania
4. Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States