1. Department of Chemistry, Northeast Normal University, Changchun, Jilin 130024, P. R. China
2. Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China
3. Department of Spinal Surgery, The First Hospital of Jilin University, Changchun, Jilin 130022, China
4. Ministry of Education, Key Laboratory of Green Preparation and Application for Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science & Engineering, Hubei University, Wuhan, Hubei 430062, P. R. China
5. Department of Ophthalmology, The Second Hospital of Jilin University, Changchun, Jilin 130041, P. R. China
6. Jilin Biomedical Polymers Engineering Laboratory, Changchun, Jilin 130022, P. R. China