1. Department of Pharmacy, University of Copenhagen, DK-2100 Copenhagen, Denmark
2. ISIS Pulsed Neutron and Muon Source, Rutherford Appleton Laboratory, OX11 0QX Harwell, Oxfordshire, UK
3. Department of Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, 200433 Shanghai, P. R. China
4. Department of Physical Chemistry 1, University of Lund, SE-22100 Lund, Sweden