1. Supermolecules Group, WPI Center for Materials Nanoarchitectonics, National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
2. Fuel Cell Materials Group, National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
3. Department of Chemistry, Wichita State University, 1845 Fairmount, Wichita, Kansas 67260-0051
4. Department of Physical Sciences and Mathematics, Carhart Science 320, Wayne State College, 1111 Main Street, Wayne, Nebraska 68787
5. Chemistry Department, Loughborough University, Loughborough, Leicestershire, United Kingdom LE11 3TU
6. ALS, Berkeley Lab, 1 Cyclotron Road, MS2-400, Berkeley, California 94720