1. Department of Applied Chemistry, National Defense Academy, Yokosuka 239-8686, Japan
2. NISSAN ARC, LTD., 1 Natsushima, Yokosuka 237-0061, Japan
3. Industrial Technology Center of Okayama Prefecture, 5301, Haga, Okayama 701-1296, Japan
4. Advanced Technology Development Department Laboratory of Plastics, Asahi Kasei Chemicals Corporation, 1-3-1, Yakou, Kawasaki 210-0863, Japan