1. Martin-Luther-Universität Halle-Wittenberg; Institut für Chemie; Von-Danckelmann-Platz 4 06120 Halle Germany
2. Ruđer Bošković Institute; Division of Physical Chemistry; Laboratory for Magnetic Resonance; Bijenička 54 10000 Zagreb Croatia
3. ETH Zürich; Department of Materials; Laboratory of Polymer Chemistry; Vladimir-Prelog-Weg 5, 8093 Zürich Switzerland
4. University of Bern; Department of Chemistry and Biochemistry; Freiestrasse 3 3012 Bern Switzerland
5. Lund University; Centre of Analysis and Synthesis; P.O. Box 124 22100 Lund Sweden