1. State Key Lab of Supramolecular Structure and Materials College of Chemistry Jilin University Changchun 130012 P. R. China
2. State Key Laboratory of Luminescent Materials and Devices and Institute of Polymer Optoelectronic Materials and Devices South China University of Technology Guangzhou 510640 P. R. China
3. Jihua Laboratory 28 Huandao South Road Foshan 528200, Guangdong Province P. R. China