1. ISOF, Consiglio Nazionale delle Ricerche, Bologna, Italy;
2. School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin, Ireland;
3. Department of Pharmacy, University of Naples “Federico II”, Napoli, Italy;
4. Laboratoire de Chimie, UMR 5182 CNRS, École Normale Supérieure de Lyon, Lyon Cedex, France;
5. NCSR “Demokritos”, Institute of Nanoscience and Nanotechnology, Athens, Greece