1. Center for the Study of Excited States of Molecules, Huygens and Gorlaeus Laboratories, University of Leiden, P.O. Box 9504, 2300 RA Leiden, The Netherlands, Faculty of Biological Sciences, University of South Bohemia, Institute of Plant Molecular Biology, Academy of Sciences of the Czech Republic, Branisovska 31, Ceske Budejovice, 370 05, Czech Republic, Photosynthesis Research Group, Department of Biochemistry, Imperial College of Science, Technology and Medicine, London SW7 2AY, United Kingdom, and...