1. Institute
of Polymer Optoelectronic Materials and Devices, State Key Laboratory
of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
2. New Vision Optoelectronic
Technology Co., Ltd, Guangzhou 510530, China
3. Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong 999077, China