1. Nanotechnology National Laboratory for Agriculture (LNNA), Embrapa Instrumentação, 13560-970 São Carlos, São Paulo, Brazil
2. Department of Dental Materials and Prosthodontics, School of Dentistry, São Paulo State University (UNESP), Rua Humaitá, 1680−Centro, 14801-903 Araraquara, São Paulo, Brazil
3. Department of Clinical Analysis, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Rodovia Araraquara Jaú, Km 01-s/n-Campos Ville, 14800-903 Araraquara, São Paulo, Brazil
4. São Carlos Institute of Chemistry University of Sao Paulo, Avenue Trabalhador São-Carlense, 400, 13566-590 São Carlos, São Paulo, Brazil