1. College of Chemistry and Chemical Engineering; Central South University; Changsha Hunan- 410083 China
2. Department of Chemistry; University of South Florida; Tampa FL 78666 USA
3. State Key Laboratory of Supramolecular Structure and Materials; College of Chemistry; Jilin University; Changchun Jilin- 130012 China
4. Departments of Polymer Science; Maurice Morton Institute of Polymer Science; Department of Polymer Engineering and Chemistry; The University of Akron; Akron OH 44325 USA
5. College of Mineral Processing and Bioengineering; Central South University; Changsha Hunan- 410083 China