1. Wood Technology and Wood Chemistry; Georg-August-University of Göttingen; Büsgenweg 4 37077 Göttingen Germany
2. Eduard-Zintl-Institute for Inorganic Chemistry and Physical Chemistry; Technical University of Darmstadt; Alarich-Weiss-Straße 4 D-64287 Darmstadt Germany
3. Physical Chemistry I and Bavarian Polymer Institute; University of Bayreuth; Universitätsstrasse 30 95440 Bayreuth Germany
4. Institute for Material Physics; Georg-August-University of Göttingen; Friedrich-Hund-Platz 1 37077 Göttingen Germany
5. Institute of Physical Chemistry; Georg-August-University of Göttingen; Tammannstrasse 6 37077 Göttingen Germany