1. Ecole Normale Supérieure, Département de Chimie, UMR-CNRS 8640 PASTEUR, 24 rue Lhomond, 75231 Paris Cedex 05, France, Institute for Laser Technology (ILT), Utsubo-Hommachi 1-8-4, Nishiku, Osaka 550-0004, Japan, Department of Biophysics, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan, and Graduate School of Materials Science, Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan