[1] Univ Clermont Ferrand, UMR 6002, CNRS, Lab Mat Inorgan, F-63177 Aubiere, France
[2] Univ Clermont Ferrand, UMR 6505, CNRS, Lab Photochim Mol & Macromol, F-63177 Aubiere, France
[3] Univ Antilles Guyane, Fac Sci Exactes & Nat, CNRS, Grp Technol Surface & Interfaces,EA 2432, F-97159 Pointe a Pitre, Guadeloupe, France