1. State Key Laboratory of Rare Earth Materials Chemistry and Applications
2. College of Chemistry and Molecular Engineering
3. Peking University
4. Beijing 100871
5. P. R. China
6. Qian Xuesen Laboratory of Space Technology
7. China Academy of Space Technology
8. Beijing 100094
9. Department of Chemistry and Biochemistry
10. Northern Illinois University
11. DeKalb
12. USA