1. Institute of applied chemistry
2. Jiangxi academy of sciences
3. Nanchang
4. P.R. China
5. Department of Chemistry
6. Tianjin University
7. Tianjin
8. Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of the Ministry of Education
9. School of Chemistry and Chemical Engineering
10. Hunan University of Science and Technology
11. Xiangtan
12. P. R. China