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Electrochemical Anion Sensing: Supramolecular Approaches.
Chemical Reviews ( IF 51.4 ) Pub Date : 2020-01-09 , DOI: 10.1021/acs.chemrev.9b00624
Robert Hein 1 , Paul D Beer 1 , Jason J Davis 1
Affiliation  

Anions play a vital role in a broad range of environmental, technological, and physiological processes, making their detection/quantification valuable. Electroanalytical sensors offer much to the selective, sensitive, cheap, portable, and real-time analysis of anion presence where suitable combinations of selective (noncovalent) recognition and transduction can be integrated. Spurred on by significant developments in anion supramolecular chemistry, electrochemical anion sensing has received considerable attention in the past two decades. In this review, we provide a detailed overview of all electroanalytical techniques that have been used for this purpose, including voltammetric, impedimetric, capacititive, and potentiometric methods. We will confine our discussion to sensors that are based on synthetic anion receptors with a specific focus on reversible, noncovalent interactions, in particular, hydrogen- and halogen-bonding. Apart from their sensory properties, we will also discuss how electrochemical techniques can be used to study anion recognition processes (e.g., binding constant determination) and will furthermore provide a detailed outlook over future efforts and promising new avenues in this field.

中文翻译:

电化学阴离子感测:超分子方法。

阴离子在广泛的环境,技术和生理过程中起着至关重要的作用,使其检测/定量非常有价值。电分析传感器可以对阴离子的存在进行选择性,灵敏,廉价,便携式和实时分析,其中可以集成选择性(非共价)识别和转导的适当组合,从而为分析提供很多帮助。在阴离子超分子化学的重大发展的推动下,电化学阴离子感测在过去的二十年中受到了相当大的关注。在这篇综述中,我们提供了用于此目的的所有电分析技术的详细概述,包括伏安法,阻抗法,电容法和电位法。我们将把讨论限制在基于合成阴离子受体的传感器上,特别着重于可逆的非共价相互作用,尤其是氢键和卤素键。除了它们的感官特性,我们还将讨论如何使用电化学技术来研究阴离子识别过程(例如,结合常数的测定),并将进一步详细介绍该领域的未来工作和有希望的新途径。
更新日期:2020-01-10
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