1. State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
2. Jiangsu Biosurf Biotech Company, Ltd., Suzhou 215123, P. R. China
3. Suzhou Seemine-Nebula Biotech Company, Ltd., Suzhou 215123, P. R. China
4. School of Biomedical Engineering and Department of Chemical Engineering, McMaster University, Hamilton, Ontario L8S4L7, Canada