1. Department of Science and Technological Innovation Università del Piemonte Orientale Viale T. Michel, 11 15121 Alessandria Italy
2. Research Nucleus in Photodynamic System State University of Maringá Av. Colombo, 5790 CEP 87020–900 Maringá Paraná Brazil
3. Group of Nanomedicine and Nanotoxicology São Carlos Institute of Physics University of São Paulo Av. Trabalhador São-carlense, 400 CEP 13566–590 São Carlos Brazil