1. School of Chemistry and Life Science, Changchun University of Technology, Changchun, Jilin 130012, P. R. China
2. Advanced Institute of Materials Science, Changchun University of Technology, Changchun, Jilin 130012, P. R. China
3. Key Laboratory of Natural Resources of Changbai Mountain & Functional Molecules, Yanbian University, Ministry of Education, Yanji, Jilin 133002, P. R. China