1. Jilin Provincial Key Laboratory of Carbon Fiber Development and Application, College of Chemistry and Life Science, Advanced Institute of Materials Science, Changchun University of Technology, Changchun 130012, P. R. China
2. Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, P. R. China
3. School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P. R. China