Closed bipolar electrode system for a liquid-junction-free reference electrode integrated in an amperometric probe sensor

Fakhruddin, Siti Masturah binti; Inoue, Kumi Y.; Tsuga, R.; Matsue, Tomokazu

doi:10.1016/j.elecom.2018.06.006

Cited by 10 publications

(7 citation statements)

References 17 publications

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“…Thus, if the liquid junction can be replaced by a metal junction, it will facilitate device fabrication. Metal junctions have been used in some electrochemical systems of conventional sizes , incorporating the techniques developed in closed bipolar electrochemistry .…”

Section: Figurementioning

confidence: 97%

Active Junctions to Improve Sensitivity and Detection Limit of a Microdevice Based on Coulometry Coupled with Silver Metallization

2019

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For achieving miniaturization and coupling with microfluidics, electrochemical devices are advantageous. In particular, coulometry is an effective tool to analyze components in solutions of very small volumes. The sensitivity and detection limit of coulometry can be improved remarkably by converting an analyte into Ag on the same Pt electrode separated in two flow channels and measuring the amount of Ag using coulometry. We demonstrate that the cathodic and anodic potentials of both parts of the Pt electrode can be shifted and reactions can be accelerated by replacing the liquid junction connecting the two flow channels by a metal wire with redox active ends. This in turn improves the sensitivity and detection limit of the device. This effect can also be observed by directly applying a voltage to the solutions in the flow channels. The achieved detection limit for hydrogen peroxide (H2O2) was 2.4 nM.

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Section: Figurementioning

confidence: 97%

Active Junctions to Improve Sensitivity and Detection Limit of a Microdevice Based on Coulometry Coupled with Silver Metallization

2019

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“…Several types of closed BPE device, including the probe type, (16)(17)(18)(19) have been reported. Moreover, chip-based BPE arrays have been reported to detect biomarkers (20) and cellular functions, such as respiratory activity.…”

Section: Introductionmentioning

confidence: 99%

Electrochemiluminescence Imaging Based on Bipolar Electrochemistry Using Commercially Available Anisotropic Conductive Films

Akasaka¹,

Ino²,

Iwama³

et al. 2022

Sensors and Materials

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“…As the reporting and sample cells are physically separated, crosstalk between the sample and reporting solutions is prevented. Several kinds of closed BPE devices, including probe‐type [5–7], have been reported. Bipolar electrochemistry has seen an increase in research development in various fields, spanning from photoelectrochemical cells and batteries to material synthesis [8] and electrochemical analysis.…”

Section: Introductionmentioning

confidence: 99%

Bipolar Electrode‐based Electrochromic Devices for Analytical Applications – A Review

et al. 2021

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Bipolar electrode‐based (BPE‐based) electrochromic devices have garnered increasing attention in the past decade. These BPE‐based electrochromic devices have been used for analytical health monitoring, point‐of‐care (POC) diagnostics, and chemical sensing. In this review, we highlight recent progress made regarding BPE‐based electrochromic devices constructed for these analytical applications. Various, available electrochromic materials are summarized in the first section, after which the different device types (e. g., paper‐based and self‐powered) are discussed. Biological‐ and chemical‐based analytical demonstrations of these devices are then reviewed. Finally, we conclude this review with a perspective on the future developments of BPE‐based electrochromic devices in analytical applications.

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Closed bipolar electrode system for a liquid-junction-free reference electrode integrated in an amperometric probe sensor

Cited by 10 publications

References 17 publications

Active Junctions to Improve Sensitivity and Detection Limit of a Microdevice Based on Coulometry Coupled with Silver Metallization

Active Junctions to Improve Sensitivity and Detection Limit of a Microdevice Based on Coulometry Coupled with Silver Metallization

Electrochemiluminescence Imaging Based on Bipolar Electrochemistry Using Commercially Available Anisotropic Conductive Films

Bipolar Electrode‐based Electrochromic Devices for Analytical Applications – A Review

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