1. Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Province Key Laboratory of Biomedical Materials and Chemical Measurement, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
2. Anhui Provincial Engineering Research Center for Polysaccharide Drugs and Institute of Synthesis and Application of Medical Materials, Department of Pharmacy, Wannan Medical College, Wuhu 241002, P. R. China