1. Department
of Physical Chemistry, Faculty of Chemistry and Pharmacy, Sofia University, 1 J. Bourchier Boulevard, 1164 Sofia, Bulgaria
2. Department
of Chemistry, Biochemistry, Physiology, and Pathophysiology, Faculty
of Medicine, Sofia University, 1 Koziak Street, 1407 Sofia, Bulgaria
3. Department
of Chemical Engineering and Biotechnology, Cambridge University, Pembroke Street, New Museums Site, CB2 3RA Cambridge, United Kingdom