1. College of Chemistry; Fuzhou University; 2 Xueyuan Road Fuzhou 350116 People's Republic of China, Fax: (+86)-591-2286-6227
2. College of Material Engineering; Fujian Agriculture and Forestry University; Fuzhou 350002 People's Republic of China
3. State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter; Chinese Academy of Sciences; Fuzhou, Fujian 350002 People's Republic of China