1. Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
2. ARC Centre of Excellence in Exciton Science School of Chemistry Bio21 Institute The University of Melbourne Melbourne Victoria 3010 Australia
3. School of Chemical Sciences University of Chinese Academy of Sciences Beijing 100049 China
4. Centre for Organic Photonics and Electronics School of Chemistry and Molecular Biosciences The University of Queensland Brisbane Queensland 4072 Australia
5. Centre for Organic Photonics & Electronics School of Mathematics and Physics The University of Queensland Brisbane Queensland 4072 Australia
6. Tianjin Key Laboratory of Molecular Optoelectronic Science Department of Chemistry School of Science Tianjin University Tianjin 300072 China