1. Friedrich-Alexander University Erlangen-Nürnberg Institute of Chemical Reaction Engineering Egerlandstraße 3 91058 Erlangen Germany
2. University of Duisburg-Essen Technical Chemistry I and Center for Nanointegration Duisburg-Essen (CeNIDE) Carl-Benz-Straße 199 45141 Essen Germany
3. University of Hamburg Institute of Technical and Macromolecular Chemistry Bundesstraße 45 20146 Hamburg Germany