1. Institute of Polymer Research; Helmholtz-Zentrum Geesthacht; Max-Planck-Straße 1 21502 Geesthacht Germany
2. FutureCarbon GmbH; Ritter-von-Eitzenberger-Straße 24 95448 Bayreuth Germany
3. Institute of Physical Chemistry; University of Hamburg; Grindelallee 117 20146 Hamburg Germany