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Lipophilic Fluorescent Dye Liquids: Förster Resonance Energy Transfer-Based Fluorescence Amplification for Ion Selective Optical Sensors Based on a Solvent Polymeric Membrane
Analytical Chemistry ( IF 6.7 ) Pub Date : 2021-02-15 , DOI: 10.1021/acs.analchem.0c05007 Tatsumi Mizuta 1 , Kenji Sueyoshi 1 , Tatsuro Endo 1 , Hideaki Hisamoto 1
Analytical Chemistry ( IF 6.7 ) Pub Date : 2021-02-15 , DOI: 10.1021/acs.analchem.0c05007 Tatsumi Mizuta 1 , Kenji Sueyoshi 1 , Tatsuro Endo 1 , Hideaki Hisamoto 1
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Optical sensors based on solvent polymeric membranes have the potential to measure analytes present in an aqueous solution through the development of a tailored method for a specific target. However, limits in the concentrations of the component dyes have prevented improvements in sensitivity. We propose a Förster resonance energy transfer (FRET)-based fluorescence amplification system for ion-selective optical sensors using a highly fluorescent liquid material composed of a lipophilic phosphonium cation and a pyrene modifying sulfonate anion ([P66614][HP-SO3]), as both the plasticizer and donor, in addition to a combination of the lipophilic phosphonium cation and the fluorescein dodecyl ester anion ([P66614][12-FL]) as the fluorescent sensing dye acceptor. For ion extraction-based sensing, the donor and acceptor were retained in the plasticized PVC membrane with negligible leaching upon exposure to acidic and basic aqueous solutions. Systematic investigation of the donor and acceptor ratios clarified the effect of the amplification factor and the sensitivity of the sensor. At an acceptor doping level of 0.5 mol % (vs donor), an approximately 22-fold higher sensitivity was obtained compared to that of a conventional PVC membrane optical sensor. During ion measurement based on the coextraction of protons and anions, selectivity following the Hofmeister order was observed, which was controlled by the addition of ionophores. The proposed FRET system based on a lipophilic fluorescent liquid material has the potential to significantly improve the sensitivities of optical sensors using solvent polymeric membranes with high selectivities for various target analytes.
中文翻译：
亲脂性荧光染料液体：基于溶剂聚合物膜的离子选择性光学传感器的基于Förster共振能量转移的荧光放大
通过开发针对特定目标的量身定制的方法，基于溶剂聚合物膜的光学传感器具有测量水溶液中存在的分析物的潜力。但是，组分染料浓度的限制阻止了灵敏度的提高。我们提出一种基于Förster共振能量转移（FRET）的荧光放大系统，用于离子选择光学传感器，该系统使用由亲脂性磷阳离子和a改性磺酸根阴离子组成的高荧光液体材料（[P 66614 ] [HP-SO 3 ] ）作为增塑剂和供体，以及亲脂性nium阳离子和荧光素十二烷基酯阴离子的组合（[P 66614] [12-FL]）作为荧光传感染料受体。对于基于离子提取的传感，供体和受体保留在增塑的PVC膜中，而在暴露于酸性和碱性水溶液中时的浸出量可忽略不计。对供体和受体比例的系统研究阐明了放大系数的影响和传感器的灵敏度。在受主掺杂水平为0.5 mol％（相对于施主）的情况下，与传统的PVC薄膜光学传感器相比，其灵敏度提高了约22倍。在基于质子和阴离子共萃取的离子测量过程中，观察到遵循霍夫迈斯特级的选择性，这是通过添加离子载体来控制的。
更新日期：2021-03-09
中文翻译：
亲脂性荧光染料液体：基于溶剂聚合物膜的离子选择性光学传感器的基于Förster共振能量转移的荧光放大
通过开发针对特定目标的量身定制的方法，基于溶剂聚合物膜的光学传感器具有测量水溶液中存在的分析物的潜力。但是，组分染料浓度的限制阻止了灵敏度的提高。我们提出一种基于Förster共振能量转移（FRET）的荧光放大系统，用于离子选择光学传感器，该系统使用由亲脂性磷阳离子和a改性磺酸根阴离子组成的高荧光液体材料（[P 66614 ] [HP-SO 3 ] ）作为增塑剂和供体，以及亲脂性nium阳离子和荧光素十二烷基酯阴离子的组合（[P 66614] [12-FL]）作为荧光传感染料受体。对于基于离子提取的传感，供体和受体保留在增塑的PVC膜中，而在暴露于酸性和碱性水溶液中时的浸出量可忽略不计。对供体和受体比例的系统研究阐明了放大系数的影响和传感器的灵敏度。在受主掺杂水平为0.5 mol％（相对于施主）的情况下，与传统的PVC薄膜光学传感器相比，其灵敏度提高了约22倍。在基于质子和阴离子共萃取的离子测量过程中，观察到遵循霍夫迈斯特级的选择性，这是通过添加离子载体来控制的。
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