1. CNR-IPCF Licryl Cosenza, Department of Physics - University of Calabria, 87036 Rende, Italy
2. Departamento de Química Física and Unidad Asociada CISC - Universidade de Vigo, 36310 Vigo, Spain
3. Department of Pharmaceutical Sciences, and CEMIF.CAL, 87036 Rende (CS), Italy
4. CRN-IPCF Bari-c/o Department of Chemistry, Via Orabona 4, 70126 Bari, Italy