1. Key Laboratory of Chemical Biology of Hebei Province Key Laboratory of Medicinal Chemistry and Molecular Diagnosis Ministry of Education College of Chemistry & Environmental Science Hebei University Baoding 071002 P. R. China
2. Department of Chemistry Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Guangdong‐Hong Kong‐Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials The Hong Kong University of Science and Technology Kowloon Hong Kong 999077 P. R. China
3. College of Physics Science & Technology Hebei University Baoding 071002 P. R. China
4. Shenzhen Institute of Aggregate Science and Technology School of Science and Engineering The Chinese University of Hong Kong Shenzhen Guangdong 518172 P. R. China