1. State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin 130012, P. R. China
2. Key Laboratory of Polymer Ecomaterials Changchun Institute of Applied Chemistry Chinese Academy of Sciences, Changchun 130022, P. R. China
3. Department of Chemistry, Northeast Normal University, Changchun, Jilin 130022, P. R. China