1. a Key Laboratory for Macromolecular Science of Shaanxi Province , School of Chemistry and Materials Science, Shaanxi Normal University , Xi’an, 710062, People's Republic of China
2. c Advanced Photoelectricity and Biology Material Research Center, Xi'an Institute of Optics and Precision Mechanics of CAS , Xi'an, 710068, People's Republic of China
3. b Xi'an Modern Chemistry Research Institute , Xi'an, 710065, People's Republic of China