1. Department of Chemistry School of Science and Technology Kwansei Gakuin University 2-1 Gakuen Sanda Hyogo 669-1337 Japan
2. Sensor Research Unit Department of Chemistry Faculty of Science Chulalongkorn University 254 Phayathai Rd., Pathumwan Bangkok 10330 Thailand
3. National Nanotechnology Center of Advanced Structural and Functional Nanomaterials Faculty of Science Chulalongkorn University 254 Phayathai Rd., Pathumwan Bangkok 10330 Thailand
4. National Institute of Advanced Industrial Science and Technology (AIST) Takamatsu Kagawa 761-0395 Japan