1. Adolphe Merkle InstituteUniversity of Fribourg Chemin des Verdiers 4 1700 Fribourg Switzerland
2. School of EngineeringZurich University of Applied Sciences Technikumstrasse 9 8400 Winterthur Switzerland
3. Chemistry DepartmentUniversity of Fribourg Chemin du Musée 9 1700 Fribourg Switzerland