1. State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China.
2. Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou, Fujian 350002, P. R. China.
3. University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, P. R. China.
4. Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 123 Bevier Rd, Piscataway, NJ 08854, USA.