1. Empa, Swiss Federal Laboratories for Materials Science and Technology Laboratory for Biomimetic Membranes and Textiles Lerchenfeldstrasse 5 St. Gallen 9014 Switzerland
2. Department of Chemistry University of Fribourg Chemin du Musée 9 Fribourg 1700 Switzerland
3. Department of Pure and Applied Chemistry University of Strathclyde Thomas Graham Building, 295 Cathedral Street Glasgow G1 1XL UK