1. College of Chemistry
2. Key Lab of Environment-Friendly Chemistry and Application of the Ministry of Education
3. Xiangtan University
4. Xiangtan 411105
5. P.R. China
6. CAS Key Laboratory of Nanosystem and Hierarchical Fabrication
7. CAS Center for Excellence in Nanoscience
8. Division of Nanophotonics
9. National Center for Nanoscience and Technology (NCNST)
10. Beijing 100190