1. Institute of Physical Chemistry RWTH Aachen University 52074 Aachen Germany
2. DWI – Leibniz‐Institute for Interactive Materials 52074 Aachen Germany
3. Institute for Technical and Macromolecular Chemistry RWTH Aachen University 52074 Aachen Germany
4. Advanced Materials for Biomedicine Institute for Applied Medical Engineering University Hospital RWTH Aachen 52074 Aachen Germany