1. Stephenson Institute for Renewable Energy and Department of Physics, University of Liverpool, LiverpoolL69 7ZF, U.K.
2. Department of Chemistry, University College London, 20 Gordon Street, LondonWC1H 0AJ, U.K.
3. Diamond Light Source Ltd., Diamond House, Harwell Science and Innovation Campus, Didcot, OxfordshireOX11 0DE, U.K.
4. Stephenson Institute for Renewable Energy and Department of Chemistry, University of Liverpool, LiverpoolL69 7ZF, U.K.