1. Sauvage Center for Molecular SciencesDepartment of ChemistryWuhan University Wuhan 430072 China
2. China State Key Laboratory of Magnetic Resonance and Atomic and Molecular PhysicsWuhan Institute of Physics and MathematicsThe Chinese Academy of Sciences Wuhan 430071 China
3. Institute of Molecular Aggregation ScienceTianjin University Tianjin 300072 China