1. Department of Chemical and Pharmaceutical Sciences
2. University of Ferrara
3. I-44121 Ferrara
4. Italy
5. Department of Chemistry
6. University of Wroclaw
7. 50-383 Wroclaw
8. Poland
9. Ben Gurion University of the Negev
10. Beer-Sheva 84105
11. Israel
12. Ilse Katz Institute for Nanoscale Science and Technology