[1] Univ Montpellier 2, CNRS, UMR 5253, Inst Charles Gerhardt Montpellier,UM2, F-34095 Montpellier 5, France
[2] Ecole Natl Super Chim Montpellier, CNRS, Inst Biomol Mousseron, UMR 5247,UM1,UM2, F-34296 Montpellier, France
[3] Univ Florence, Dipartimento Chim, INSTM Res Unit, I-50019 Sesto Fno Firenze, Italy
[4] Univ Milan, Ist Fisiol Gen & Chim Biol, I-20134 Milan, Italy
[5] CNR, INFM, NRC S3, I-14100 Modena, Italy
[6] Univ Pavia, INFM, CNR, I-27100 Pavia, Italy
[7] Univ Pavia, Dipartimento Fis A Volta, I-27100 Pavia, Italy