1. Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge, Cambridgeshire CB2 1EW, U.K.
2. Department
of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
3. Department
of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, United States
4. National
Synchrotron Light Source, Brookhaven National Laboratory, Upton, New York 11973, United States
5. Diamond
Light Source Limited, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, U.K.
6. Department
of Chemistry, State University of New York at Stony Brook, Stony Brook, New York 11794-3400, United States