1. Research Center in Applied Chemistry (CEPESQ), Department of Chemistry, Federal University of Paraná, P. O. Box 19081, Curitiba, Paraná 81531-980, Brazil
2. Institute for Chemistry of Renewable Resources, University of Natural Resources and Life Sciences, Vienna, Muthgasse 18, 1190 Vienna, Austria
3. Instituto de Física de São Carlos, Universidade de São Paulo, P. O. Box 369, São Carlos, São Paulo 13560-970, Brazil