1. Institute of Polymer Optoelectronic Materials and Devices Key Laboratory of Luminescence from Molecular Aggregates of Guangdong Province State Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou 510640 P. R. China
2. Guangxi Key Lab of Agricultural Resources Chemistry and Biotechnology College of Chemistry and Food Science Yulin Normal University 1303 Jiaoyudong Road Yulin 537000 P. R. China
3. Guangzhou New Vision Optoelectronic Technology Co. Ltd. Guangzhou 510530 P. R. China