1. Hubei
Collaborative Innovation Center for Advanced Organic Chemical Materials,
Hubei Key Lab on Organic and Polymeric Optoelectronic Materials, Department
of Chemistry, Wuhan University, Wuhan 430072, China
2. CAS
Research/Education Center for Excellence in Molecular Sciences, CAS
Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China