1. Henan Key Laboratory of New Optoelectronic Functional Materials College of Chemistry and Chemical Engineering Anyang Normal University Anyang 455000 P. R. China
2. College of Chemistry Zhengzhou University Zhengzhou 450000 P. R. China
3. School of Chemical and Environmental Engineering Anyang Institute of Technology Anyang 455000 P. R. China
4. School of Materials Science and Engineering Anyang Institute of Technology Anyang 455000 P. R. China
5. School of Optoelectronic Science and Engineering Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University Suzhou 215006 P. R. China