1. IC CNR—Institute of Crystallography via Amendola, 122/o Bari 70126 Italy
2. Dipartimento di Matematica e Fisica “E. De Giorgi” Università del Salento via Arnesano Lecce 73100 Italy
3. Center for Biomolecular Nanotechnologies@UNILE Istituto Italiano di Tecnologia via Barsanti Arnesano, (LE) 73010 Italy
4. CNR NANOTEC—Institute of Nanotechnology c/o Campus Ecotekne University of Salento via Monteroni 73100 Lecce Italy
5. Chemistry Department Brookhaven National Laboratory P.O. Box 5000 Upton NY 11973-5000 USA
6. Photon Sciences Brookhaven National Laboratory P.O. Box 5000 Upton NY 11973-5000 USA