1. The Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education)
2. Department of Chemistry
3. Tsinghua University
4. Beijing 100084
5. P. R. China
6. Key Laboratory of Advanced Materials
7. Ministry of Education
8. School of Material Science & Engineering
9. Beijing
10. The State Key Laboratory of Chemical Resource Engineering
11. Beijing University of Chemical Technology
12. Beijing 100029