1. Key Laboratory of Green-chemistry Materials in University of Yunnan Province, Key Laboratory of Advanced Synthetic Chemistry (Yunnan Minzu University) of State Ethnic Affairs Commission, School of Chemistry & Environment, Yunnan Minzu University, Kunming, 650500, P. R. China
2. College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming, Yunnan 650500, P. R. China
3. State Key Laboratory of Luminescent Materials and Devices, and Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, South China University of Technology, Guangzhou 510641, P. R. China