1. Department of Chemistry
2. Biology and Biotechnology and Centro di Eccellenza sui Materiali Innovativi Nanostrutturati (CEMIN) University of Perugia
3. 06123 Perugia
4. Italy
5. LENS (European Laboratory for Non-Linear Spectroscopy)
6. Department of Chemical Sciences
7. University of Catania
8. 95125 Catania