1. Molecular Science and Biomedicine Laboratory (MBL), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering College of Biology, Aptamer Engineering Center of Hunan Province Hunan University Changsha, Hunan 410082 P. R. China
2. Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials, College of Chemistry and Bioengineering Guilin University of Technology Guilin, Guangxi 541004 P. R. China