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Rhodamine-based conjugated polymers: potentiometric, colorimetric and voltammetric sensing of mercury ions in aqueous medium
Analyst ( IF 3.6 ) Pub Date : 2017-08-08 00:00:00 , DOI: 10.1039/c7an00606c Rukiye Ayranci 1, 2, 3, 4, 5 , Dilek Odaci Demirkol 5, 6, 7, 8 , Suna Timur 5, 6, 7, 8 , Metin Ak 1, 2, 3, 4, 5
Analyst ( IF 3.6 ) Pub Date : 2017-08-08 00:00:00 , DOI: 10.1039/c7an00606c Rukiye Ayranci 1, 2, 3, 4, 5 , Dilek Odaci Demirkol 5, 6, 7, 8 , Suna Timur 5, 6, 7, 8 , Metin Ak 1, 2, 3, 4, 5
Affiliation
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Herein, we report the synthesis and characterization of a new rhodamine-based monomer (RD-CZ), and an investigation of the optical and electrochemical properties of the corresponding polymer (P(RD-CZ)), which was electropolymerized on an ITO electrode. The resulting P(RD-CZ) polymer film was used as a simple and novel multi-signal sensor platform, which demonstrates ion-selective potentiometric, colorimetric and voltammetric responses in aqueous media for the first time. P(RD-CZ) exhibits excellent selectivity for Hg2+ ions compared with Cd2+, Cu2+ Zn2+, and Fe3+ using the potentiometric technique, which depends on the increasing charge carrier transport through rhodamine-bound Hg2+ with a limit of detection (LOD) of 9.77 × 10−8 M. The P(RD-CZ) polymer film also exhibits a distinct color change from orange to purple, which is detectable even by the naked eye, in the presence of Hg2+ ions. The LOD for Hg2+ ions obtained using the colorimetric method is 3.16 × 10−8 M. The same material has also been used for the voltammetric sensing of Hg2+ in aqueous media with a detection limit of 1 × 10−7 M. In this study, a conductive polymer-based sensor platform for detecting mercury ions via three different methods has been designed for the first time. By doing so, a disposable planar paper-based ion-sensing platform, which is suitable for low-cost point-of-care and in-field testing applications, could be fabricated with a highly reproducible and linear response towards different concentrations of analyte ions in aqueous and biological samples.
中文翻译：
罗丹明基共轭聚合物：水介质中汞离子的电位，比色和伏安传感
在这里，我们报告了新型基于罗丹明的单体（RD-CZ）的合成和表征，以及在ITO电极上电聚合的相应聚合物（P（RD-CZ））的光学和电化学性质的研究。 。所得的P（RD-CZ）聚合物膜用作简单新颖的多信号传感器平台，该平台首次展示了在水性介质中的离子选择电位，比色和伏安响应。使用电位技术，与Cd 2 +，Cu 2+ Zn 2+和Fe 3+相比，P（RD-CZ）对Hg 2+离子具有优异的选择性，这取决于通过罗丹明结合的Hg 2增加的载流子传输+检测限（LOD）为9.77×10 -8M。P（RD-CZ）聚合物膜还显示出从橙色到紫色的明显颜色变化，即使在存在Hg的情况下，用肉眼也可以检测到2+离子。使用比色法获得的Hg 2+离子的LOD为3.16×10 -8M。相同的材料也已用于水介质中Hg 2+的伏安检测，检测极限为1×10 -7M。在这项研究中，基于导电聚合物的传感器平台可通过以下方式检测汞离子首次设计了三种不同的方法。通过这样做，可以制造出适用于低成本现场护理和现场测试应用的一次性平面纸基离子感测平台，该平台对不同浓度的分析物离子具有高度可再现性和线性响应在水和生物样品中。
更新日期：2017-09-08
中文翻译：
罗丹明基共轭聚合物：水介质中汞离子的电位，比色和伏安传感
在这里，我们报告了新型基于罗丹明的单体（RD-CZ）的合成和表征，以及在ITO电极上电聚合的相应聚合物（P（RD-CZ））的光学和电化学性质的研究。 。所得的P（RD-CZ）聚合物膜用作简单新颖的多信号传感器平台，该平台首次展示了在水性介质中的离子选择电位，比色和伏安响应。使用电位技术，与Cd 2 +，Cu 2+ Zn 2+和Fe 3+相比，P（RD-CZ）对Hg 2+离子具有优异的选择性，这取决于通过罗丹明结合的Hg 2增加的载流子传输+检测限（LOD）为9.77×10 -8M。P（RD-CZ）聚合物膜还显示出从橙色到紫色的明显颜色变化，即使在存在Hg的情况下，用肉眼也可以检测到2+离子。使用比色法获得的Hg 2+离子的LOD为3.16×10 -8M。相同的材料也已用于水介质中Hg 2+的伏安检测，检测极限为1×10 -7M。在这项研究中，基于导电聚合物的传感器平台可通过以下方式检测汞离子首次设计了三种不同的方法。通过这样做，可以制造出适用于低成本现场护理和现场测试应用的一次性平面纸基离子感测平台，该平台对不同浓度的分析物离子具有高度可再现性和线性响应在水和生物样品中。
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