1. Department of Chemistry, Wuhan University, Wuhan 430072, China
2. State Key Laboratory of Modern Optical Instrumentations, Center for Optical and Electromagnetic Research, Joint Research Laboratory of Optics of Zhejiang Normal University and Zhejiang University, Zhejiang University, Hangzhou 310058, China
3. Institute of Chemistry, The Chinese Academy of Sciences, Beijing 100124, P. R. China
4. Institute of Molecular Aggregation Science, Tianjin University, Tianjin 300072, China