1. Department of Chemistry, Xiangtan University, Xiangtan, PR China
2. Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, PR China
3. College of Chemistry, Northeast Normal University, Changchun, PR China
4. Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Xiangtan University, Xiangtan, PR China