1. Institute of Chemistry; CAS Research/Education Center for Excellence in Molecular Sciences; Chinese Academy of Sciences; Beijing 100190 P. R. China
2. Key Laboratory of Energy Materials Chemistry; Ministry of Education; Key laboratory of Advanced Functional Materials; Autonomous Region; Institute of Applied Chemistry; Xinjiang University; Urumqi 830046 Xinjiang P. R. China
3. School of Chemistry and Chemical EngineeringUniversity of Chinese Academy of Sciences; Beijing 100049 P. R. China