1. Dept of Applied Chemistry, Kyushu Institute of Technology, Sensuicho, Tobata, Fukukoka 804-8550, Japan
2. Dept of Chemistry, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
3. Dept of Chemistry, Gunma University, Tenjincho, Kiryu, Gunma 376-8515, Japan