1. Research Center for Advanced Measurement and Characterization National Institute for Materials Science Sengen 1-2-1 Tsukuba Ibaraki 305-0047 Japan
2. Department of Applied Chemistry and Biotechnology Okayama University of Science 1-1 Ridai-cho, Kita-ku Okayama 700-0005 Japan
3. Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of Education Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers School of Chemistry and Chemical Engineering Hunan University of Science and Technology Xiangtan Hunan 411201 China
4. Department of Physics University of Basel Klingelbergstrasse 82 4056 Basel Switzerland
5. Graduate School of Pure and Applied Sciences University of Tsukuba Tsukuba 305-8571 Japan