1. Institute
of Physics of São Carlos, University of São Paulo, Av. Trabalhador Sãocarlense 400, 13566-590, São Carlos, SP Brazil
2. Institute
of Chemistry, São Paulo State University, P.O. Box 355, 14800-900 Araraquara, SP Brazil
3. Aix-Marseille University, CNRS, IM2NP
7334, Av. E. N. Neimen, 13397 Marseille, France