1. Institute of Chemistry – University of Campinas – UNICAMP, P.O. Box 6154, Campinas, Sao Paulo 13083-970, Brazil
2. Institute of Physics “Gleb Wataghin” – University of Campinas – UNICAMP, P.O. Box 6165, Campinas, Sao Paulo 13083-970, Brazil
3. Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada