1. Chongqing Key Laboratory of Green Synthesis and Applications, College of Chemistry, Chongqing Normal University, Chongqing 401331, P. R. China
2. Key Laboratory of Material Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China
3. College of Chemistry and Chemical Engineering, Chongqing University of Science and Technology, Chongqing 401331, P. R. China
4. Department of Chemistry and the Oden Institute for Computational Engineering and Sciences, The University of Texas, Austin, Texas 78712, United States