1. Clausthal University of Technology, Institute of Organic Chemistry, Leibnizstrasse 6, D-38678 Clausthal-Zellerfeld, Germany
2. Clausthal University of Technology, Institute of Physical Chemistry, Arnold-Sommerfeld-Straße 4, D-38678 Clausthal-Zellerfeld, Germany
3. Clausthal University of Technology, Institute for Electrical Information Technology, Leibnizstraße 28, D-38678 Clausthal-Zellerfeld, Germany