1. College of Chemistry and Chemical
Engineering, Luoyang Normal University,
Luoyang 471022, P. R. China
2. College of Chemistry and Pharmaceutical
Engineering, Nanyang Normal University,
Nanyang 473061, P. R. China
3. College of Chemistry, Tianjin
Key Laboratory of Structure and Performance for Functional Molecule, Tianjin Normal University, Tianjin 300387, P. R. China