1. State Key Laboratory of Chemical Resource Engineering & Analysis and Test Center
2. Beijing University of Chemical Technology
3. Beijing 100029
4. P. R. China
5. Beijing Union University
6. Beijing Laboratory of bioactive substances and functional foods
7. Beijing 100101
8. Key Lab of Organic Optoelectronics & Molecular Engineering of Ministry of Education
9. Department of Chemistry
10. Tsinghua University
11. Beijing 100084