1. Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials, and Bavarian Polymer Institute Friedrich-Alexander Universität Erlangen-Nürnberg, Egerlandstr. 3, D-91058 Erlangen, Germany
2. DS LSS Institut Laue – Langevin, 71 Avenue des Martyrs, CS 20 156, 38042 Grenoble CEDEX 9, France
3. Department of Chemistry and Pharmacy, Friedrich-Alexander Universität Erlangen-Nürnberg, Egerlandstr. 3, D-91058 Erlangen, Germany