1. Beijing National Laboratory for Molecular Sciences
2. State Key Laboratory of Rare Earth Materials Chemistry and Applications
3. College of Chemistry and Molecular Engineering
4. Peking University
5. Beijing 100871
6. State Key Laboratory of Coordination Chemistry
7. School of Chemistry and Chemical Engineering
8. Nanjing University
9. Nanjing 210093
10. P. R. China
11. Institute for Supramolecular Chemistry and Catalysis
12. Shanghai University
13. Shanghai
14. Department of Chemistry