1. Department of Organic
and Polymeric Materials, Graduate School of Science and
Engineering, Tokyo Institute of Technology, 2-12-1 S5-20 Ookayama, Tokyo 152-8552, Japan
2. Condensed Matter Science Division,
Quantum Beam Science Directorate, Japan Atomic Energy Agency (JAEA), 1-1-1 Kouto, Sayo, Hyogo 679-5148, Japan
3. Department of Applied
Chemistry, The University of Tokyo, 7-3-1 Bunkyo-ku, Tokyo 113-8656, Japan
4. Research Center for Integrated
Science, Japan Advanced Institute of Science and Technology (JAIST), 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan