1. College of Chemistry and Materials Science, Fujian Key Laboratory of polymer Materials, Fujian Normal University, Fuzhou 350007, China
2. Department of Physics, Xiamen University, Xiamen 361005, China
3. Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China
4. State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China