1. Sauvage Center for Molecular Sciences and Hubei Key Lab on Organic and Polymeric Optoelectronic MaterialsCollege of Chemistry and Molecular SciencesWuhan University Wuhan 430072 China
2. College of Chemistry and Molecular EngineeringBeijing National Laboratory for Molecular SciencesPeking University Beijing 100871 China
3. Department of Materials and Environmental ChemistryStockholm University Stockholm 10691 Sweden
4. State Key Laboratory of Magnetic Resonance and Atomic and Molecular PhysicsWuhan Institute of Physics and MathematicsChinese Academy of Sciences Wuhan 430071 China