基于聚合物的亚硫酸氢根比率荧光探针及其在食品检测中的应用

doi:10.11896/cldb.21050279

材料导报

2022, Vol. 36

Issue (19): 21050279-4 https://doi.org/10.11896/cldb.21050279

高分子与聚合物基复合材料

基于聚合物的亚硫酸氢根比率荧光探针及其在食品检测中的应用

龚梦芸¹, 李爽², 王松¹, 李望南¹, 程晓红¹

1 湖北文理学院低维光电材料与器件湖北省重点实验室,湖北襄阳 441053
2 湖北航天化学技术研究所,湖北襄阳 441057

Polymer-based Fluorescent Probe for Bisulfite: Good Ratiometric Response and Application in Food Sample

GONG Mengyun¹, LI Shuang², WANG Song¹, LI Wangnan¹, CHENG Xiaohong¹

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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摘要共轭聚合物PT3可作为亚硫酸氢根的比率荧光探针,亚硫酸氢根可与PT3中的醛基发生亲核加成反应,导致荧光光谱蓝移近120 nm,凭肉眼便可观察到溶液荧光从橙色变为蓝色。探针PT3对亚硫酸氢根的响应速度快,反应时间仅为4 min,检测灵敏度低至1.6×10^-7 mol/L。而且,在 0~30 μmol/L浓度范围内,荧光强度的比率值(I₅₀₈/I₆₂₆)与亚硫酸氢根的浓度呈现良好的线性关系,可实现准确的定量检测。通过比率荧光的方式,探针PT3可用于食品中亚硫酸氢根的实际检测。

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	龚梦芸
	李爽
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	李望南
	程晓红

关键词: 共轭聚合物荧光探针比率荧光亚硫酸氢根食品检测

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.

Key words: conjugated polymer fluorescent probe ratiometric fluorescence bisulfite food detection

出版日期: 2022-10-10 发布日期: 2022-10-12

ZTFLH:

O622.4

基金资助: 低维光电材料与器件湖北省重点实验室开放基金(HLOM222004);襄阳市科技项目(2020YL03);湖北文理学院科技创新团队项目(2020kypytd001)

通讯作者: chengxiaohong0807@126.com

作者简介: 龚梦芸,本科毕业于湖北文理学院,现为湖北文理学院在读硕士研究生,主要从事新型光电功能材料的设计与研究。
程晓红,副教授。2013年毕业于武汉大学,获得博士学位。现就职于湖北文理学院低维光电材料与器件湖北省重点实验室。研究方向为化学/生物传感器。以第一作者身份/通讯作者身份发表学术论文30余篇,相关研究成果已被国际知名刊物引用1 000余次。

引用本文:

龚梦芸, 李爽, 王松, 李望南, 程晓红. 基于聚合物的亚硫酸氢根比率荧光探针及其在食品检测中的应用[J]. 材料导报, 2022, 36(19): 21050279-4.
GONG Mengyun, LI Shuang, WANG Song, LI Wangnan, CHENG Xiaohong. Polymer-based Fluorescent Probe for Bisulfite: Good Ratiometric Response and Application in Food Sample. Materials Reports, 2022, 36(19): 21050279-4.

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http://www.mater-rep.com/CN/10.11896/cldb.21050279 或 http://www.mater-rep.com/CN/Y2022/V36/I19/21050279

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