1. Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Rua Santa Adélia 166, 09210-170, Santo André - SP, Brazil
2. Institute of Chemistry, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, 91501-970 Porto Alegre, Brazil
3. Centre de Recherche Paul-Pascal, CNRS, 115 Avenue du Docteur-Schweitzer, 33600 Pessac, France
4. Institute of Macromolecular Chemistry, Heyrovský Sq. 2, 162 06 Prague 6, Czech Republic