1. Key Laboratory for Advanced Materials and Institute of Fine Chemicals
2. School of Chemistry & Molecular Engineering
3. East China University of Science and Technology
4. Shanghai 200237
5. P. R. China
6. Department of Radiology
7. Chongqing Traditional Chinese Medicine Hospital
8. Chongqing 400021
9. China
10. Department of Applied Chemistry
11. Graduate School of Engineering
12. Osaka Prefecture University
13. Osaka 599-8531
14. Japan