A Novel Self‐protection Hydroquinone Electrochemical Sensor Based on Thermo‐sensitive Triblock Polymer PS‐PNIPAm‐PS,Electroanalysis

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A Novel Self‐protection Hydroquinone Electrochemical Sensor Based on Thermo‐sensitive Triblock Polymer PS‐PNIPAm‐PS
Electroanalysis ( IF 2.7 ) Pub Date : 2020-02-17 , DOI: 10.1002/elan.201900644
Pengcheng Zhao ₁ , Meijun Ni ₁ , Chao Chen ₂ , Chenxi Wang _{3,

4} , Pingping Yang _{3,

4} , Xiahui Wang ₄ , Chunyan Li ₁ , Yixi Xie ₃ , Junjie Fei _{1,

4}

Affiliation

A novel self‐protection sensor was successfully constructed based on an interesting thermo‐sensitive triblock polymer PS‐PNIPAm‐PS. At low temperatures (<24 °C), the analyte was able to undergo the redox process at the modified electrode. However, the polymer shrunk and accumulated at high temperatures (>30 °C), which dramatically increased the electron transfer resistance (Rct) of the modified electrode and consequently blocked the occurrence of the redox reaction to protect the electrode from high temperatures and enhance its stability. Under optimized conditions, the proposed sensor showed a good detection range for hydroquinone (6×10⁻⁷ to 2.35×10⁻³ M) and a low LOD (490 nM). The sensor was also successfully applied for detecting hydroquinone in real samples. The present work may provide a novel method for electrode protection, high‐temperature alarm, high‐temperature protection of batteries and new sensors production.

中文翻译：

基于热敏三嵌段聚合物PS-PNIPAm-PS的新型自保护对苯二酚电化学传感器

基于有趣的热敏三嵌段聚合物PS-PNIPAm-PS成功构建了一种新型的自我保护传感器。在低温（<24°C）下，分析物能够在修饰电极上进行氧化还原过程。然而，聚合物在高温（> 30°C）下收缩并积聚，这极大地提高了修饰电极的电子传递阻力（Rct），从而阻止了氧化还原反应的发生，从而保护了电极免受高温影响并增强了电极的性能。稳定性。在最佳条件下，所提出的传感器对氢醌的检测范围很好（6×10 ^-7至2.35×10 ^-3 M）和低LOD（490 nM）。该传感器还成功地用于检测实际样品中的对苯二酚。当前的工作可能为电极保护，高温报警，电池的高温保护和新传感器的生产提供一种新颖的方法。

更新日期：2020-02-17

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