1. Department of Chemistry, Graduate School of Science, Osaka Metropolitan University, Sakai, Osaka 599-8531, Japan
2. BYK-Chemie GmbH, Abelstrasse 45, 46483 Wesel, Germany
3. BYK Japan K.K., 3-29 Ichigaya-Honmuracho, Shinjuku-ku, Tokyo 162-0845, Japan
4. Institution for Research Promotion, Osaka Metropolitan University, Sakai, Osaka 599-8531, Japan
5. Department of Applied Chemistry, National Yang Ming Chiao Tung University (NYCU), Hsinchu 30010, Taiwan