1. Tianjin Key Laboratory of Molecular Optoelectronic Science
2. Department of Chemistry
3. Institute of Molecular Plus
4. Tianjin University
5. Tianjin 300072
6. CAS Key Laboratory of Standardization and Measurement for Nanotechnology
7. CAS Center for Excellence in Nanoscience
8. National Center for Nanoscience and Technology
9. Beijing 100190
10. China