1. State Key Laboratory of Applied Organic ChemistryKey Laboratory of Special Function Materials and Structure DesignCollege of Chemistry and Chemical EngineeringLanzhou University Lanzhou 730000 P. R. China
2. Key Laboratory for Magnetism and Magnetic Materials of Ministry of EducationSchool of Physical Science and TechnologyLanzhou University Lanzhou 730000 P. R. China
3. Laboratory for Advanced Interfacial Materials and DevicesResearch Centre for Smart Wearable TechnologyInstitute of Textiles and ClothingThe Hong Kong Polytechnic University Hong Kong SAR 999077 China
4. Tianjin Key Laboratory of Molecular Optoelectronic SciencesDepartment of ChemistryTianjin UniversityCollaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 P. R. China