1. School of Chemistry, University of Southampton, SO17 1BJ Southampton, U.K., Leiden Institute of Chemistry, Gorlaeus Laboratories, P.O. Box 9502, NL-2300 RA Leiden, The Netherlands, Nijmegen Centre for Molecular Life Sciences, Radboud University Nijmegen Medical Centre, NL-6500 HB Nijmegen, The Netherlands, Department of Physics, University of Warwick, Coventry CV4 7AL, U.K., Laboratoire de Chimie, UMR-5182 CNRS/ENS, Laboratoire de Recherche Conventionné du CEA (DSV 23V/DSM 0432), Ecole Normale Supérieure...