1. Department
of Rare Earths, Faculty of Chemistry, Adam Mickiewicz University, Grunwaldzka 6, 60-780 Poznań, Poland
2. Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland
3. Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), 76344 Eggenstein-Leopoldshafen, Germany
4. Nanobiomedical Centre at Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland
5. Department
of Macromolecular Physics, Adam Mickiewicz University, Umultowska
85, 61-614 Poznań, Poland