1. Dipartimento di Ingegneria delle Acque e di Chimica, Polytechnic of Bari and CNR Centre I.C.C.O.M., Via Orabona, 4, 70125 Bari, Italy, Fax: (internat.) + 39‐080‐5963611
2. Dipartimento di Scienze e Tecnologie Biologiche e Ambientali, University of Lecce, Via Monteroni, 73100, Lecce, Italy
3. Consortium C.A.R.S.O., Cancer Research Center 70010, Valenzano‐Bari, Italy
4. Institut für Anorganische Chemie der RWTH, Prof. Pirlet Str. 1, 52074 Aachen, Germany
5. Department of Chemistry, Beijing Normal University, Beijing 100875, P. R. China