1. College of Chemistry and Materials Science, Key Laboratory of Chemical Biology of Hebei ProvinceHebei University, Baoding 071002, People’s Republic of China
2. Department of Physics, Harbin Institute of Technology, Harbin 150001, People’s Republic of China
3. Hebei Research Center of the Basic Discipline of Synthetic Chemistry, Hebei University, Baoding 071002, People’s Republic of China