1. Department of Chemistry and Biochemistry, Concordia University, Canada, Institut National de la Recherche Scientifique-Énergie, Matériaux et Télécommunications, Université du Québec, Canada, Department of Physics, Yogi Vemana University, Kadapa, India, Dipartimento Scientifico e Tecnologico, Università di Verona, and INSTM, UdR Verona, Italy, and DiSTeMeV, Università di Verona and INSTM, UdR Verona, Verona, Italy