1. College of Chemistry and Chemical Engineering Anyang Normal University Anyang 455000 People's Republic of China
2. College of Chemistry and Chemical Engineering Yantai University Yantai 264005 Shandong People's Republic of China
3. School of Pharmacy Harbin University of Commerce Harbin 150076 People's Republic of China
4. College of Chemistry Zhengzhou University Zhengzhou 450001 People's Republic of China