1. Bergische Universität Wuppertal, Macromolecular Chemistry Group (buwMakro) and Wuppertal Center for Smart Materials and Systems (CM@S), Gauss-Str. 20, D-42119 Wuppertal, Germany
2. Universität des Saarlandes, Physical and Theoretical Chemistry, Campus Saarbrücken B 2.2, D-66123 Saarbrücken, Germany
3. University of Coimbra, CQC, Department of Chemistry, Rua Larga, 3004-535, Coimbra, Portugal
4. Institut für Experimentelle und Angewandte Physik, Universität Regensburg, D-93053 Regensburg, Germany