1. Institute of Technical and Macromolecular Chemistry Hamburg University Bundesstr. 45 20146 Hamburg Germany
2. Max Planck Institute for Chemical Energy Conversion Stiftstraße 34–36 45470 Mülheim an der Ruhr Germany
3. Department of Chemistry and Centre for Pulse EPR Spectroscopy Imperial College London Molecular Sciences Research Hub White City Campus London W12 0BZ UK
4. Department of Mechanical Engineering University of Siegen Paul-Bonatz-Str. 9–11 Siegen 57076 Germany