1. Universität Hamburg, Institute for Technical and Macromolecular Chemistry, Bundesstr. 45, 20146 Hamburg, Germany
2. Technical University of Darmstadt, Institute for Technical and Macromolecular Chemistry, Alarich-Weiß-Straße 8, 64287 Darmstadt, Germany
3. University of Stellenbosch, Department of Chemistry and Polymer Science, PO Box X1, 7602 Matieland, South Africa