1. Shaanxi Key Laboratory of Macromolecular Science and Technology Xi'an Key Laboratory of Hybrid Luminescent Materials and Photonic Device MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions School of Chemistry and Chemical Engineering Northwestern Polytechnical University Xi'an 710072 Shaanxi P. R. China
2. CAS Key Laboratory of Bio-inspired Materials and Interfacial Science Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
3. School of Future Technology University of Chinese Academy of Sciences Beijing 100049 P. R. China
4. Science and Technology Center for Quantum Biology National Institute of Extremely-Weak Magnetic Field Infrastructure Hangzhou 310051 Zhejiang P. R. China