1. College of Materials Science and Opto-Electronic Technology & CAS Center for Excellence in Topological Quantum Computation & Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
2. Key Laboratory of Environmentally Friendly Chemistry and Application of the Ministry of Education, and Key Laboratory for Green Organic Synthesis and Application of Hunan Province, College of Chemistry, Xiangtan University, Xiangtan 411105, China
3. State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates, South China University of Technology, Guangzhou 510640, China
4. Department of Chemistry and MOE Key Laboratory of Organic Optoelectronics and Molecular Engineering, Tsinghua University, Beijing 100084, China
5. Key Laboratory of Organic Solids and Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China