1. Karlsruhe Institute of Technology (KIT), Institute of Nanotechnology (INT), Hermann-von-Helmholtz Platz 1, Eggenstein-Leopoldshafen 76344, Germany
2. Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 17/a, 43124 Parma, Italy
3. Department of Molecular Biochemistry and Pharmacology, Instituto di Ricerche Farmacologiche Mario Negri, IRCCS, 20156 Milano, Italy
4. Department of Chemistry, University of Rome, Tor Vergata, Via della Ricerca Scientifica, Rome 00133, Italy
5. Department of Chemistry, McGill University, 801 Sherbrooke St. W., Montreal, Québec City H3A 0B8, Canada
6. Dipartimento DISFARM, University of Milano, via Camillo Golgi 19, 20133 Milano, Italy