1. Institute of Physiological ChemistryUlm University Albert‐Einstein‐Allee 11 89081 Ulm Germany
2. Institute of Inorganic Chemistry IUlm University Albert‐Einstein‐Allee 11 89081 Ulm Germany
3. Department Synthesis of MacromoleculesMax Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
4. Department of ChemistryUniversity of Cambridge Cambridge CB2 1EW UK
5. Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
6. Department of NeurosurgeryGerman Armed Forces Hospital Ulm Oberer Eselsberg 40 89081 Ulm Germany