1. Department of Chemistry and Applied Chemistry, Faculty of Science and Engineering, Saga University, 1 Honjyo, Saga 840-8502, Japan, CREST, Japan Science and Technology agency, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan, Japan Medical Materials Corporation, Uemura Nissei Bldg. 9F 3-3-31 Miyahara, Yodogawa-ku, Osaka 532-0003, Japan, and Department of Orthopaedic Surgery, Faculty of Medicine, Saga University, 5 Nabeshima, Saga 849-8501, Japan