1. College of Life Science
2. Northeast Forestry University
3. Harbin 150040
4. P. R. China
5. State Key Laboratory of Polymer Physics and Chemistry
6. Changchun Institute of Applied Chemistry
7. Chinese Academy of Sciences
8. Changchun 130022
9. School of Medicine
10. University of South Carolina
11. Columbia
12. USA
13. Department of Chemistry and Biochemistry