1. Department of Chemical Sciences
2. University of Naples Federico II
3. Comp. Univ. Monte Sant’Angelo Via Cintia 21
4. 80126 Naples
5. Italy
6. Scuola Normale Superiore
7. 56126 Pisa
8. Institut des Matériaux Jean Rouxel (IMN)
9. Université de Nantes, CNRS
10. Department of Physics “E. Pancini”