1. Compiègne University of Technology, CNRS Laboratory Enzyme and Cell Engineering Rue Roger Couttolenc, CS 60319 60203 Compiegne Cedex France
2. Mulhouse Institute for Material Sciences CNRS LRC 7228, BP2488 68057 Mulhouse France
3. University of East Anglia, School of Chemistry Norwich Research Park Norwich NR4 7TJ UK