Electrochemical impedimetric biosensors, featuring the use of Room Temperature Ionic Liquids (RTILs): Special focus on non-faradaic sensing

Upasham, Sayali; Banga, Ivneet; Jagannath, Badrinath; Paul, Anirban; Lin, Kai‐Chun; Muthukumar, Sriram; Prasad, Shalini

doi:10.1016/j.bios.2020.112940

Cited by 55 publications

(42 citation statements)

References 98 publications

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“…EIS without a redox couple as a probe is often referred to as non-faradaic sensing, although this can be a misnomer if impedance spectra are recorded at a potential at which oxidation or reduction of a component of the redox system being investigated occurs. The range of biological applications of non-faradaic sensing [ 29 ] can be seen in Figure 9 .…”

Section: Eis As a Sensing Techniquementioning

confidence: 99%

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Electrochemical Impedance Spectroscopy in the Characterisation and Application of Modified Electrodes for Electrochemical Sensors and Biosensors

Brett

2022

Molecules

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Electrochemical impedance spectroscopy is finding increasing use in electrochemical sensors and biosensors, both in their characterisation, including during successive phases of sensor construction, and in application as a quantitative determination technique. Much of the published work continues to make little use of all the information that can be furnished by full physical modelling and analysis of the impedance spectra, and thus does not throw more than a superficial light on the processes occurring. Analysis is often restricted to estimating values of charge transfer resistances without interpretation and ignoring other electrical equivalent circuit components. In this article, the important basics of electrochemical impedance for electrochemical sensors and biosensors are presented, focussing on the necessary electrical circuit elements. This is followed by examples of its use in characterisation and in electroanalytical applications, at the same time demonstrating how fuller use can be made of the information obtained from complete modelling and analysis of the data in the spectra, the values of the circuit components and their physical meaning. The future outlook for electrochemical impedance in the sensing field is discussed.

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Section: Eis As a Sensing Techniquementioning

confidence: 99%

“…The RTILs are used for increasing the sensitivity of the measurements. Further details can be found in [ 29 ].…”

Section: Eis As a Sensing Techniquementioning

confidence: 99%

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Electrochemical Impedance Spectroscopy in the Characterisation and Application of Modified Electrodes for Electrochemical Sensors and Biosensors

Brett

2022

Molecules

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“…After a couple of decades of extensive development in the study of the potential uses of ILs, their applications are now a reality in many branches of science and industry. Thus, their uses have been demonstrated in a wide range of areas of analytical chemistry [ 2 ], organic chemistry [ 3 , 4 ], electrochemical conversion and energy storage [ 5 ], biosensing technology [ 6 ], pharmaceutical and biomedical industry [ 7 , 8 ] or recovery of industrial solvents [ 9 , 10 ], to name but a few. In this context, the characterization of these materials through experimental, theoretical or computational methods plays a decisive role to promote their industrial applications [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

Influence of Small Quantities of Water on the Physical Properties of Alkylammonium Nitrate Ionic Liquids

Ausín

Parajó

Trenzado

et al. 2021

IJMS

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This paper presents a comprehensive study of two alkylammonium nitrate ionic liquids. As part of this family of materials, mainly ethylammonium nitrate (EAN) and also propylammonium nitrate (PAN) have attracted a great deal of attention during the last decades due to their potential applications in many fields. Although there have been numerous publications focused on the measurement of their physical properties, a great dispersion can be observed in the results obtained for the same magnitude. One of the critical points to be taken into account in their physical characterization is their water content. Thus, the main objective of this work was to determine the degree of influence of the presence of small quantities of water in EAN and PAN on the measurement of density, viscosity, electrical conductivity, refractive index and surface tension. For this purpose, the first three properties were determined in samples of EAN and PAN with water contents below 30,000 ppm in a wide range of temperatures, between 5 and 95 °C, while the last two were obtained at 25 °C. As a result of this study, it has been concluded that the presence of water is critical in those physical properties that involve mass or charge transport processes, resulting in the finding that the absolute value of the average percentage change in both viscosity and electrical conductivity is above 40%. Meanwhile, refractive index (≤0.3%), density (≤0.5%) and surface tension (≤2%) present much less significant changes.

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“…50 Due to this reason, it is known and utilized extensively as electrochemical transducer for electrochemical application. 51,52 Our group has explored the potential of RTIL and its role in an electrochemical platform for the detection of CO 2 . 53 There are many other reports where [BMIM] BF 4 has been utilized for gas separation as well as electrochemical application.…”

Section: Introductionmentioning

confidence: 99%

ZEUS (ZIF-based electrochemical ultrasensitive screening) device for isopentane analytics with focus on lung cancer diagnosis

et al. 2021

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Electrochemical impedimetric biosensors, featuring the use of Room Temperature Ionic Liquids (RTILs): Special focus on non-faradaic sensing

Cited by 55 publications

References 98 publications

Electrochemical Impedance Spectroscopy in the Characterisation and Application of Modified Electrodes for Electrochemical Sensors and Biosensors

Electrochemical Impedance Spectroscopy in the Characterisation and Application of Modified Electrodes for Electrochemical Sensors and Biosensors

Influence of Small Quantities of Water on the Physical Properties of Alkylammonium Nitrate Ionic Liquids

ZEUS (ZIF-based electrochemical ultrasensitive screening) device for isopentane analytics with focus on lung cancer diagnosis

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