1. Key Laboratory of Theoretical Organic Chemistry and Functional Molecular; Ministry of Education, Hunan University of Science and Technology; Xiangtan 411201 China
2. Laboratory of Controllable Preparation and Functional Application of Fine Polymers; School of Chemistry and Chemical Engineering, Hunan University of Science and Technology; Xiangtan 411201 China
3. Department of Mathematics and Physics; North China Electric Power University, Beinong Road 2, Changping; Beijing 102206 People's Republic of China
4. Beijing Kein Research Center for Natural Sciences; Beijing 100022 People's Republic of China