Abstract
An innovative molecular imprinted polymer based on KH-570 modified SiO2-coated cadmium telluride quantum dots was prepared as fluorescence sensor for sulfadimidine (SM2) sensitive and selective detection. The quantum dots were firstly encapsulated in silica by sol–gel process, and then the double bond was modified on the surface of silica with KH-570. Finally, the molecular imprinted layer was synthesized on the surface of silica by template molecule, methacrylic acid (MAA) and ethylene glycol dimethyl acrylate. The fluorescence sensors showed good structure when characterized by SEM. Besides, the fluorescence sensors showed a good linear range from 10 to 80 μmol.L−1 with a lower LOD of 0.42 μmol.L−1. These sensors were successfully applied to detect SM2 in the water samples with a recovery rate from 91.6% to 97.8% and the relative standard deviation less than 2.5%, indicating that fluorescence sensors have the potential application in the detection of real samples.
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Acknowledgements
This work was financially supported by the National Natural Science Foundation of China (32072297), Science and Technology Planning Social Development Project of Jiangsu Province (No. BE2018694), Science and Technology Planning Social Development Project of Zhenjiang City (No. SH2019013), the Fifth phase “169 Project” training fund of Zhenjiang, Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment. Thanks are due to Dr. Xu Xiaolu who has contributed to this paper in some manner.
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Yang, W., Fang, Q., Zhang, L. et al. Synthesis and characterization of an innovative molecular imprinted polymers based on CdTe QDs fluorescence sensing for selective detection of sulfadimidine. J Polym Res 28, 356 (2021). https://doi.org/10.1007/s10965-021-02714-8
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DOI: https://doi.org/10.1007/s10965-021-02714-8