1. State Key Laboratory of Luminescent Materials and Devices Institute of Polymer Optoelectronic Materials and Devices South China University of Technology Wushan Road 381 Guangzhou 510640 P. R. China
2. Center for Aggregation‐Induced Emission State Key Laboratory of Luminescent Materials and Devices South China University of Technology Wushan Road 381 Guangzhou 510640 P. R. China