1. Green Nanotechnology Group, Universidade de Brasília, Brasília DF 72220-900, Brazil
2. Soft Matter Nanotechnology Laboratory, CIC biomaGUNE, San Sebastián, Guip 20009, Spain
3. Laboratoire de Chimie des Polymères Organiques, Universitè de Bordeaux, UMR5629, CNRS—Bordeaux INP—ENSCBP, 16 Avenue Pey-Berland, 33607 Pessac, Cedex, France