1. Nanoscience Post-Graduation Program, Franciscan University, Santa Maria, Rio Grande do Sul, Brazil;
2. Pharmaceutical Sciences Post-Graduation Program, Federal University of Rio Grande do Sul State, Porto Alegre, Brazil;
3. Pharmaceutical Nanotechnology Post-Graduation Program, Federal University of Rio Grande do Sul State, Porto Alegre, Brazil;
4. Faculty of Pharmacy, Universitá degli Studi di Parma, Parma, Italy