1. School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, P. R. China
2. Key Laboratory of Theoretical Organic Chemistry and Function Molecule of Ministry of Education, Hunan University of Science and Technology, Xiangtan, P. R. China
3. Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, Hunan University of Science and Technology, Xiangtan, P. R. China
4. Department of Burns and Plastic Surgery, the Third Xiangya Hospital, Central South University, Changsha, P. R. China
5. Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, P. R. China