1. Institute for Molecular Science, National Institutes of Natural Sciences, Okazaki 444-8585, Japan
2. School of Physical Sciences, Graduate University for Advanced Studies, Okazaki 444-8585, Japan
3. Department of Chemistry, University of California, Berkeley, California 94720, United States
4. Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
5. Kavli Energy NanoSciences Institute at Berkeley, Berkeley, California 94720, United States