POLYMERS AND POLYMER MATRIX COMPOSITES |
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Polymer-based Fluorescent Probe for Bisulfite: Good Ratiometric Response and Application in Food Sample |
GONG Mengyun1, LI Shuang2, WANG Song1, LI Wangnan1, CHENG Xiaohong1
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1 Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices, Hubei University of Arts and Science, Xiangyang 441053, Hubei, China 2 Hubei Institute of Aerospace Chemical Technology, Xiangyang 441057, Hubei, China |
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Abstract Aconjugated polymer (PT3) was designed and synthesized to act as a ratiometric fluorescent probe for HSO3-. Based on the nucleophilic addition reaction between bisulfite and aldehyde group in PT3, it displayed efficient fluorogenic signaling with emission shift of about 120 nm. Moreover, the detection process was accompanied with the visible fluorescent color change from orange to blue. The fluorescent probe PT3 can quantitatively detect HSO3- with high selectivity, sensitivity and fast response time (4 min), with a limit detection of 1.6×10-7 mol/L. The fluorescence intensity ratio (I508/I626) was linear with the concentration of HSO3- in the range of 0—30 μmol/L. Above all, the probe PT3 was successfully applied to determine the concentration of HSO3- in food samples with ratiometric fluorescent methods.
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Published: 10 October 2022
Online: 2022-10-12
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Fund:Hubei Key Laboratory of Low Dimensional Optoelectronic Material and Devices (HLOM222004), the Xiangyang Science and Technology Project (2020YL03) and the Innovation Research Team Project of Hubei University of Arts and Science (2020kypytd001) |
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