1. Institute
of Biomolecular Chemistry, C.N.R., Via P. Gaifami, 18, 95126 Catania, Italy
2. Laboratory
of Photochemistry, Department of Drug Science, University of Catania, Viale Andrea Doria 6, 95125 Catania, Italy
3. Alfa Intes ITS, Casoria, 80026 Napoli, Italy
4. Department
of Chemical, Biological, Pharmaceutical and Environmental Science, University of Messina, Polo Annunziata, 98168 Messina, Italy