1. State Key Laboratory of Silicon Materials MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 P. R. China
2. Department of Chemistry Zhejiang University Hangzhou 310027 P. R. China
3. Institute of Polymer Optoelectronic Materials and Devices & State Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou 510640 P. R. China