1. Nissan Chemical Corporation, Tokyo 103-6119, Japan.
2. Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
3. Center for Advanced Transdermal Drug Delivery System Center, Kyushu University, 744 Motooka, Fukuoka 819-0395, Japan.
4. Center for Future Chemistry, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.