1. Hubei Collaborative Innovation Center for Advanced Organic Chemical MaterialsMinistry of Education Key Laboratory for the Synthesis and Application of Organic Functional MoleculesCollege of Chemistry and Chemical EngineeringHubei University Wuhan 430062 P. R. China
2. Department Key Laboratory for the Chemistry and Molecular Engineering of Medicinal ResourcesSchool of Chemistry and Pharmaceutical Sciences Guangxi Normal University Guilin 541004 P. R. China
3. Wuhan National High Magnetic Field Center & School of PhysicsHuazhong University of Science and Technology Wuhan 430074 P. R. China