1. CNR-Institute of Biomolecular Chemistry, Via Paolo Gaifami 18, 95126 Catania, Italy
2. CIB-Interuniversity Consortium for Biotechnologies U.O. of Catania, Via Flavia, 23/1, 34148 Trieste, Italy
3. Department of Drug and Health Sciences, University of Catania, Via Santa Sofia 64, 95125 Catania, Italy
4. Department of Physics and Chemistry, University of Palermo, Via Archirafi 36, Palermo, Italy
5. Department of Chemical Science, University of Catania, and I.N.S.T.M. UdR of Catania, Via Santa Sofia 64, 95125 Catania, Italy
6. Department of Physics and Astronomy “Ettore Majorana”, University of Catania, Via S. Sofia 64, 95123 Catania, Italy
7. Department of Biomedical and Biotechnological Sciences, University of Catania, Via S. Sofia 97, Catania, Italy
8. NANOMED, Research Centre for Nanomedicine and Pharmaceutical Nanotechnology, University of Catania, Viale A. Doria 6, 95124 Catania, Italy