1. Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Fuzhou 350207 China
2. Department of Chemistry National University of Singapore Singapore 117543 Singapore
3. National and Local United Engineering Lab of Flat Panel Display Technology Institute of Optoelectronic Display Fuzhou University Fuzhou 350108 China
4. Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350100 China
5. Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
6. Institute of Molecular Plus Tianjin University Tianjin 300072 China
7. Tianjin Key Laboratory of Molecular Optoelectronic Sciences Department of Chemistry School of Science Tianjin University Tianjin 300072 China