1. Dipartimento
di Chimica e Biologia, Università degli Studi di Salerno, via Ponte don Melillo, Fisciano, Salerno I-84085, Italy
2. IMAST Scarl-Technological
District in Polymer and Composite Engineering, Piazza Bovio 22, Napoli, Napoli I-80133, Italy
3. Department
of Physics, Tohoku University, Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan