1. Tianjin Key Laboratory of Molecular Optoelectronic SciencesDepartment of ChemistrySchool of SciencesTianjin UniversityCollaborative Innovation Centre of Chemical Science and Engineering Tianjin 300072 P. R. China
2. Beijing Key Laboratory for Optical Materials and Photonic DevicesDepartment of ChemistryCapital Normal University Beijing 100048 P. R. China
3. Beijing National Laboratory for Molecules Science (BNLMS)State Key Laboratory for Structural Chemistry of Unstable and Stable Species and Key Laboratory of PhotochemistryInstitute of ChemistryChinese Academy of Sciences Beijing 100190 P. R. China