1. Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, U.K.
2. ISIS Neutron and Muon Source, Rutherford Appleton Laboratory, Oxfordshire OX11 0QX, U.K.
3. Institute of Chemistry, University of Potsdam, Karl-Liebknecht-Straße 24-25, Potsdam 14476, Germany
4. Fraunhofer Institute for Applied Polymer Research (IAP), Geiselbergstr. 69, 14476 Potsdam, Germany
5. Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC 3052, Australia