1. Department of Chemical Sciences; University of Naples “Federico II” Via Cintia 4; I-80126 Naples Italy
2. Laboratory of Nanomaterials and Devices (SSPT-PROMAS-NANO) ENEA - C. R. Portici Piazzale Enrico Fermi; 1 Località Granatello; I-80055 Portici (NA) Italy
3. Institute for Polymers; Composites and Biomaterials (IPCB); CNR; Via Campi Flegrei 34 I-80078 Pozzuoli (NA) Italy