1. Institute of Nanotechnology and Nanobiology, Jacob of Paradies University, Chopina St. 52, Bldg. 6, Gorzow Wielkopolski 66-400, Poland
2. Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112 St., Lodz 90-363, Poland
3. Faculty of Materials Engineering and Technical Physics, Poznan University of Technology, Piotrowo 3A St., Poznan 61-138, Poland
4. Institute of Optoelectronics, Military University of Technology, Kaliskiego 2 St., Warsaw 00-908, Poland