Affiliation: | 1. School of Materials Science and Engineering, Shaanxi Normal University, P. R. China;2. School of Physics and Information Technology, Shaanxi Normal University, P. R. China;3. School of Chemistry and Chemical Engineering, Shaanxi Normal University, P. R. China;4. Center for Nanochemistry, Beijing National Laboratory for Molecular Sciences, Key Laboratory for the Physics and Chemistry of Nanodevices, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing, P. R. China |