1. Charles Coulomb Laboratory
2. University of Montpellier
3. UMR 5221
4. 34095 Montpellier Cedex 5
5. France
6. Platform for Research in Nanosciences and Nanotechnology
7. Faculty of Sciences 2
8. Lebanese University
9. Lebanon
10. Institute Charles Gerhardt
11. Chimie Moléculaire et Organisation du Solide
12. UMR 5253