1. Institute of Experimental Physics, University of Gdansk, Wita Stwosza 57, 80-952 Gdańsk,
Poland
2. Faculty of Chemistry, University of Gdansk, Sobieskiego 18/19, 80-952 Gdańsk,
Poland
3. Health Science Center,
Center
for Commercialization of Fluorescence Technology, University of North Texas, 3500 Camp Bowie Boulevard, Fort Worth,
Texas 76107, United States
4. Department of Technical Physics
and Applied Mathematics, Gdansk University of Technology, Narutowicza 11/12, 80-952 Gdańsk, Poland