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