1. Contribution from the Department of Material Science and Chemistry, Faculty of Systems Engineering, Wakayama University, Sakaedani, Wakayama 640-8510, Japan, Department of Chemistry, Faculty of Education, Wakayama University, Sakaedani, Wakayama 640-8510, Japan, and Department of Chemistry, Faculty of Science, Ibaraki University, Bunkyo, Mito, Ibaraki 310-8512, Japan