1. Ecological Technology Development Center, Sharp Corporation, 282-1 Hajikami, Katsuragi, Nara 639-2198, Japan, Research Institute of Innovative Technology for the Earth (RITE), 9-2 Kizugawa-dai, Kizu-Cho, Soraku-Gun, Kyoto 619-0292, Japan, and Department of Chemistry, Graduate School of Science, Osaka University, 1-16 Machikaneyama, Toyonaka, Osaka 560-0043, Japan