1. Division of Chemistry & Biological Chemistry School of Physical & Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
2. Guizhou University of Traditional Chinese Medicine Guizhou P. R. China
3. Material and Chemical Engineering College Zhengzhou University of Light Industry Zhengzhou 450001 Henan Province P. R. China
4. Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education Guizhou University Huaxi District Guiyang 550025 P. R. China