1. Department of Chemistry, Wayne State University, 5101 Cass Ave., Detroit, MI 48202, USA
2. Department of Chemistry and Biology “A. Zambelli” University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, SA, Italy
3. Dipartimento di Scienze e Tecnologie, Università del Sannio, via de Sanctis snc, 82100 Benevento, Italy
4. Lumigen Instrument Center, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, USA