1. Nanotechnology National Laboratory for Agriculture (LNNA), Embrapa Instrumentação, São Carlos, 13560-970 São Paulo, Brazil
2. PPGQ, Department of Chemistry, Center for Exact Sciences and Technology, Federal University of São Carlos (UFSCar), São Carlos, 13565-905 São Paulo, Brazil
3. Chemistry Institute, Federal University of Bahia (UFBA), Salvador, 40170-115 Bahia, Brazil