1. The Institute for Advanced Studies Wuhan University Wuhan 430072 China
2. Hong Kong University of Science and Technology–Shenzhen Research Institute No. 9, Yuexing 1st RD, Hi-tech Park, Nanshan Shenzhen 518057 China
3. Department of Chemistry Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials Energy Institute and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration & Reconstruction Hong Kong University of Science and Technology Clear Water Bay Kowloon, Hong Kong China
4. Department of Physics and Organic and Carbon Electronics Laboratories (ORaCEL) North Carolina State University Raleigh NC 27695 USA
5. Department of Physics Chinese University of Hong Kong New Territories Hong Kong 999077 China
6. Beijing National Laboratory for Molecular Sciences Centre for Soft Matter Science and Engineering Key Lab of Polymer Chemistry & Physics of the Ministry of Education College of Chemistry Peking University Beijing 100871 China
7. Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou 510640 China
8. Key Laboratory of Materials Processing and Mold Zhengzhou University Ministry of Education 450002 Zhengzhou China