Ion Selective Detection Based on the Nuances of the Kinetic Fingerprint for Ion Transfer at Soft Interfaces

Fang, Yishan; Deng, Haiqiang; Huang, Xinjian; Wang, Lishi

doi:10.1021/acs.analchem.0c02266

Cited by 3 publications

(1 citation statement)

References 66 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An interface between two immiscible electrolyte solutions (ITIES) is a unique electrode, capable of detecting a wide range of electroactive chemical species regardless of their classification as redox-active or redox-inactive. − ITIES electrodes have become more prevalent in analytical science due to their sensitivity beyond redox-active analytes and their ease of fabrication down to the nanoscale, , allowing for high spatial resolution which enables single-entity and nanostructure studies. − Electrochemistry at the ITIES has enabled researchers to probe fundamental mechanistic processes ,,− and a wide range of applications, including catalysis, − cellular studies, − ,,,,− heavy metal detection, − pharmacological studies, ,− …”

Section: Introductionmentioning

confidence: 99%

Interface between Two Immiscible Electrolyte Solutions Electrodes for Chemical Analysis

et al. 2022

View full text Add to dashboard Cite

The interface between two immiscible electrolyte solutions (ITIES) plays vital roles in various fields, such as neuroscience, environmental science, analytical chemistry, separation, catalysis, and nanoparticle synthesis. ITIES emerges as a unique approach in chemical analysis due to its sensitivity to both redox-active and redox-inactive analytes. Neurotransmitters, metal ions, drug molecules, and other complex molecules such as proteins have been detected using ITIES. The detection of redox-inactive species at the ITIES has opened a door to understanding a wide range of complex systems that are less suited to probing by solid electrodes. In this feature article, we present the history of electrochemistry at the ITIES; charge transfer reactions, thermodynamics, and kinetics at the ITIES; electrode−solution interfacial structure; and a diverse range of applications enabled by ITIES.

show abstract

Section: Introductionmentioning

confidence: 99%

Interface between Two Immiscible Electrolyte Solutions Electrodes for Chemical Analysis

et al. 2022

View full text Add to dashboard Cite

show abstract

A Comprehensive Examination of Voltammetric Parameters in Fourier Transform Sine‐wave Voltammetry (FT‐SWV) Leading to Concentration Linearity and High Signal‐to‐background Ratio

Yang

Weber

2022

Electroanalysis

View full text Add to dashboard Cite

There has not been a comprehensive investigation of the effect of voltammetric parameters: amplitude, dc bias potential, and excitation frequency of the sine waveform in Fourier Transform Sine-Wave Voltammtery (FT-SWV) on background, signal, and signal-to-background ratio as well as linearity with respect to the concentration of an analyte. FT-SWV of ruthenium hexamine (III) chloride (RuHex) demonstrates that the dc bias potential can be used to adjust the phase angle difference between the signal and background to obtain out-of-phase background. Several conditions show a high signal-to-noise ratio and good concentration linearity. The lessons from RuHex guided us to conditions for good signal-to-background ratio and concentration linearity for dopamine (DA). Keywords: sine-wave voltammetry • FT-SWV • signal-to-background ratio • phase-sensitive detection • out-of-phase background [a] Y.

show abstract

Disruption Dynamics and Charge Transfer of a Single Attoliter Emulsion Droplet Revealed by Combined Fast-Scan Sinusoidal Voltammetry and Short Time Fourier Transform Analysis

Ha,

Park,

Dinh

et al. 2024

Anal. Chem.

View full text Add to dashboard Cite

Single-entity electrochemistry has gained significant attention for the analysis of individual cells, nanoparticles, and droplets, which is leveraged by robust electrochemical techniques such as chronoamperometry and cyclic voltammetry (CV) to extract information about single entities, including size, kinetics, mass transport, etc. For an in-depth understanding such as dynamic interaction between the electrode and a single entity, the unconventional fast electrochemical technique is essential for time-resolved analysis. This fast experimental technique is unfortunately hindered by a substantial nonfaradaic response. In this work, we introduce fast-scan sinusoidal voltammetry (FSSV) combined with a short-time Fourier transform (STFT) for analyzing single emulsion droplets. Utilizing ultramicroelectrode and fast potential sweeps up to apparent 200 V/s, we achieved high temporal resolution (8 ms per voltammogram) to capture the current signals during droplet collisions. STFT analysis reveals the amplitude and phase changes, allowing for the accurate detection of collision events even in the absence of redox species. By adopting an algorithm of drift-free baseline subtraction, a conventional CV shape was obtained in FSSV. The reacted charge from the single-entity voltammogram at every 8 ms was also plotted. This method effectively addresses limitations in traditional techniques, providing insights into emulsion dynamics such as droplet contact and droplet breakdown.

show abstract

Ion Selective Detection Based on the Nuances of the Kinetic Fingerprint for Ion Transfer at Soft Interfaces

Cited by 3 publications

References 66 publications

Interface between Two Immiscible Electrolyte Solutions Electrodes for Chemical Analysis

Interface between Two Immiscible Electrolyte Solutions Electrodes for Chemical Analysis

A Comprehensive Examination of Voltammetric Parameters in Fourier Transform Sine‐wave Voltammetry (FT‐SWV) Leading to Concentration Linearity and High Signal‐to‐background Ratio

Disruption Dynamics and Charge Transfer of a Single Attoliter Emulsion Droplet Revealed by Combined Fast-Scan Sinusoidal Voltammetry and Short Time Fourier Transform Analysis

Contact Info

Product

Resources

About