1. Contribution from the School of Biological and Chemical Sciences, Queen Mary, University of
London, Mile End Road, London E1 4NS, United Kingdom, Department of Chemistry and
Chemical Biology, Cornell University, Ithaca, New York 14853, Division of Chemistry and
Chemical Engineering, California Institute of Technology, Pasadena, California 91125, Central
Laser Facility, CCLRC Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire
OX11 0QX, United Kingdom, and Beckman Institute, California Institute...