1. Institute of Chemistry, Rua Josue de Castro, Cidade Universitaria Zeferino Vaz, University of Campinas, 13083-970 Campinas, SP, Brazil
2. Univ. Bordeaux, ISM, UMR CNRS 5255, 351 Cours de la Libération, 33405 Talence Cedex, France
3. Laboratory of Photonic Materials and Devices, Rua Mendeleyev 200, Cidade Universitaria Zeferino Vaz, School of Mechanical Engineering, University of Campinas, 13083-860 Campinas, SP, Brazil