基于聚甲基丙烯酸保护的银纳米簇的双响应光谱法检测单质碘

引用本文: 曹雪玲, 柏亚庚, 朱琳, 李飞, 于晓洋, 于丽颖. 基于聚甲基丙烯酸保护的银纳米簇的双响应光谱法检测单质碘[J]. 分析化学, 2021, 49(5): 759-767. doi: 10.19756/j.issn.0253-3820.201596 shu

Citation: CAO Xue-Ling, BAI Ya-Geng, ZHU Lin, LI Fei, YU Xiao-Yang, YU Li-Ying. Optical Dual Response Detection of Iodine Based on Polymethacrylic Acid-Protected Silver Nanoclusters[J]. Chinese Journal of Analytical Chemistry, 2021, 49(5): 759-767. doi: 10.19756/j.issn.0253-3820.201596 shu

基于聚甲基丙烯酸保护的银纳米簇的双响应光谱法检测单质碘

吉林化工学院化学与制药工程学院, 吉林 132022

通讯作者: 曹雪玲,E-mail:xueling-cao126@163.com

基金项目:
国家自然科学基金项目（No.21605056）和吉林省教育厅科学技术研究项目（No.JJKH20180553KJ）资助。

摘要: 采用紫外光辐照法，一步制备了聚甲基丙烯酸保护的银纳米簇（AgNCs@PMAA），基于单质碘（I₂）与AgNCs@PMAA之间相互作用可引起荧光猝灭及特征吸收峰增强的原理，建立了荧光发射光谱-紫外可见吸收光谱法双响应检测单质碘的方法。形貌和光谱表征结果表明，制备的AgNCs@PMAA粒径均匀，单质碘对AgNCs@PMAA的融合作用可以引起其组成和形态变化。基于AgNCs@PMAA荧光发射峰及吸收峰强度变化与单质碘的浓度变化之间的线性关系，建立了两种检测单质碘的方法及可视化检测方法。以AgNCs@PMAA作为荧光探针检测I₂的线性范围为1.0~90.0 μg/mL，检出限（S/N=3）为0.168 μg/mL，方法具有良好的选择性。将此荧光探针用于碘酒中I₂的测定，加标回收率为100.5%-100.9%，相对标准偏差小于4.7%。此光学探针结合多种检测方法，具有良好的实际应用价值和应用前景。

关键词:

English

Optical Dual Response Detection of Iodine Based on Polymethacrylic Acid-Protected Silver Nanoclusters

College of Chemical & Pharmaceutical Engineering, Jilin Institute of Chemical Technology, Jilin 132022, China

Corresponding author: CAO Xue-Ling, xueling-cao126@163.com

Received Date: 05 October 2020
Revised Date: 21 January 2021
Fund Project:
Supported by the National Natural Science Foundation of China (No.21605056) and the Science and Technology Research Project of Jilin Province Education Department (No.JJKH20180553KJ).

Abstract: A polymethacrylic acid-protected silver nanocluster with fluorescence (AgNCs@PMAA) was prepared in one step using ultraviolet light irradiation. Based on the fact that the interaction between iodine and AgNCs@PMAA could cause fluorescence quenching and characteristic absorption, a dual response method for determination of iodine by fluorescence emission spectrometry and UV-vis absorption spectrometry was established. The prepared AgNCs@PMAA was characterized by TEM, XPS and FTIR, and the results showed that the AgNCs@PMAA had uniform small nanometer size and strong fluorescence luminescence, however, the fusion effect of iodine on AgNCs@PMAA could cause changes in its composition and morphology. Based on the linear relationship between the fluorescence emission peak and absorption peak intensity change of AgNCs@PMAA and the concentration of iodine elemental substance, two methods and visual detection method for detecting iodine were established and applied to actual sample determination. The fluorescence quenching efficiency of AgNCs@PMAA was linearly correlated with I₂ concentration within the range of 1.0-90.0 μg/mL, and the detection limit was 0.168 μg/mL (S/N=3). The fluorescent probe was applied to the determination of iodine in iodine tincture samples with recoveries of 100.5%-100.9%, and the relative standard deviations were less than 4.7%. The optical probe combined with multiple detection methods showed good practical significance and application prospects.

Key words:

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沈阳化工大学材料科学与工程学院沈阳 110142

基于聚甲基丙烯酸保护的银纳米簇的双响应光谱法检测单质碘

通讯作者: 曹雪玲,E-mail:xueling-cao126@163.com

English

Optical Dual Response Detection of Iodine Based on Polymethacrylic Acid-Protected Silver Nanoclusters

Corresponding author: CAO Xue-Ling, xueling-cao126@163.com

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

基于聚甲基丙烯酸保护的银纳米簇的双响应光谱法检测单质碘

通讯作者: 曹雪玲,E-mail:xueling-cao126@163.com

English

Optical Dual Response Detection of Iodine Based on Polymethacrylic Acid-Protected Silver Nanoclusters

Corresponding author: CAO Xue-Ling, xueling-cao126@163.com

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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通讯作者: 陈斌, bchen63@163.com

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