Themed collection New horizons in nanoelectrochemistry
Electrochemical kinetic fingerprinting of single-molecule coordinations in confined nanopores
K238H-AeL nanopores with histidine sites were designed as single-molecule reactors for the measurement of single-molecule coordination reactions.
Faraday Discuss., 2024, Advance Article
https://doi.org/10.1039/D4FD00133H
Electrochemical nucleation and growth kinetics: insights from single particle scanning electrochemical cell microscopy studies
We present scanning electrochemical cell microscopy (SECCM) studies of Ag nucleation and growth on carbon and indium tin oxide (ITO) electrodes.
Faraday Discuss., 2024, Advance Article
https://doi.org/10.1039/D4FD00131A
Multimodal nanoparticle analysis enabled by a polymer electrolyte nanopore combined with nanoimpact electrochemistry
We demonstrate the multimodal analysis of a nanoparticle sample by coupling a polymer electrolyte nanopore sensor with nanoimpact electrochemistry and validate the experimental results with a numerical model.
Faraday Discuss., 2024, Advance Article
https://doi.org/10.1039/D4FD00143E
Nafion coated nanopore electrode for improving electrochemical aptamer-based biosensing
Nafion blocks the aptamer's active sites from planar gold, while the aptamer retains its redox activity from nanoporous gold.
Faraday Discuss., 2024, Advance Article
https://doi.org/10.1039/D4FD00144C
Spiers Memorial Lecture: New horizons in nanoelectrochemistry
This introductory lecture prefaces the 2024 New Horizons in Nanoelectrochemistry Faraday Discussion.
Faraday Discuss., 2024, Advance Article
https://doi.org/10.1039/D4FD00159A
Charge-induced deformation of scanning electrolyte before contact
Deformation of liquid and gel electrolytes before touching the sample in SECCM and SGECM: equilibrium does not always exist.
Faraday Discuss., 2024, Advance Article
https://doi.org/10.1039/D4FD00147H
Nanoscale visualization of the anti-tumor effect of a plasma-activated Ringer's lactate solution
To characterize the anti-tumor effect of plasma-activated Ringer's lactate solutions, we used scanning ion conductance microscopy, using glass nanopipettes as probes, to visualize the structural changes of the cell surface.
Faraday Discuss., 2024, Advance Article
https://doi.org/10.1039/D4FD00116H
Delivery of carbon dioxide to an electrode surface using a nanopipette
A new scanning probe approach for the delivery of a gas-phase reactant to the surface of an electrocatalyst through a self-replenishing bubble located at the end of a scanning probe has been developed.
Faraday Discuss., 2024, Advance Article
https://doi.org/10.1039/D4FD00124A
Controlling the droplet cell environment in scanning electrochemical cell microscopy (SECCM) via migration and electroosmotic flow
The contributions of migration and electroosmotic flow induced by electrochemical redox molecules in dual-barrel SECCM were characterised.
Faraday Discuss., 2024, Advance Article
https://doi.org/10.1039/D4FD00080C
Enzyme-modified Pt nanoelectrodes for glutamate detection
Glutamate detection on a glutamate oxidase-modified Pt nanoelectrode with the smallest area to date.
Faraday Discuss., 2024, Advance Article
https://doi.org/10.1039/D4FD00138A
Advanced algorithm for step detection in single-entity electrochemistry: a comparative study of wavelet transforms and convolutional neural networks
In this study, two approaches for step detection in single-entity electrochemistry data are developed and compared: discrete wavelet transforms and convolutional neural networks.
Faraday Discuss., 2024, Advance Article
https://doi.org/10.1039/D4FD00130C
Regulation of transmembrane current through modulation of biomimetic lipid membrane composition
A biomimetic lipid membrane was developed by integrating DNA nanowires with a two-dimensional nanofluid membrane. By manipulating the DNA content, the composition of the membrane can be controlled, thereby adjusting ion transport.
Faraday Discuss., 2024, Advance Article
https://doi.org/10.1039/D4FD00149D
Scanning electrochemical probe microscopy: towards the characterization of micro- and nanostructured photocatalytic materials
The feasibility of fabricating micro- and sub-micro-sized AFM probes based on Pt-B electrodeposition for the electrochemical detection of H2 evolution is demonstrated.
Faraday Discuss., 2024, Advance Article
https://doi.org/10.1039/D4FD00136B
Seeing nanoscale electrocatalytic reactions at individual MoS2 particles under an optical microscope: probing sub-mM oxygen reduction reaction
Interferometric scattering microscopy (iSCAT) allows visualizing individual petal-like MoS2 sub-microparticles and monitoring operando their activity towards oxygen reduction reaction.
Faraday Discuss., 2024, Advance Article
https://doi.org/10.1039/D4FD00132J
Revealing the diverse electrochemistry of nanoparticles with scanning electrochemical cell microscopy
Through presenting and discussing these findings, this article seeks to highlight complications in single-NP SECCM experiments, particularly those arising from issues with sample preparation.
Faraday Discuss., 2024, Advance Article
https://doi.org/10.1039/D4FD00115J
Non-sticky SiNx nanonets for single protein denaturation analysis
Denaturation of individual ovalbumin induced by guanidine hydrochloride and lead ions was investigated by using non-sticky SiNx nanonets.
Faraday Discuss., 2024, Advance Article
https://doi.org/10.1039/D4FD00117F
Ion concentration polarization causes a nearly pore-length-independent conductance of nanopores
The conductance and selectivity of low-aspect-ratio nanopores are almost independent of the length due to polarization effects controlled by the geometric and electrochemical properties of the whole (pore + reservoir) system.
Faraday Discuss., 2024, Advance Article
https://doi.org/10.1039/D4FD00148F
Electrochemiluminescence microscopy for the investigation of peptide interactions within planar lipid membranes
We propose the use of electrochemiluminescence microscopy in a solution of [Ru(bpy)3]2+ and tri-n-propylamine to monitor alterations in lipid membranes due to peptide action.
Faraday Discuss., 2024, Advance Article
https://doi.org/10.1039/D4FD00137K
Single-molecule electrochemical imaging of ‘split waves’ in the electrocatalytic (EC′) mechanism
Imaging the single molecule electrocatalytic (EC′) process and correlating it with the conventional ensemble EC′ mechanism.
Faraday Discuss., 2024, Advance Article
https://doi.org/10.1039/D4FD00126E
Integrated scanning electrochemical cell microscopy platform with local electrochemical impedance spectroscopy using a preamplifier
An integrated SECCM with LEIS is established by combining the preamplifier based EIS measurement with scanning electrochemical cell microscopy.
Faraday Discuss., 2024, Advance Article
https://doi.org/10.1039/D4FD00122B
Molecular sandwich-based DNAzyme catalytic reaction towards transducing efficient nanopore electrical detection of antigen proteins
A molecular sandwich-based DNAzyme catalytic reaction is capable of transducing detectable nucleic acids as a substitute for difficult to yield protein detection in complicated biological matrices, in a nanopore.
Faraday Discuss., 2024, Advance Article
https://doi.org/10.1039/D4FD00146J
Ion current oscillation of polyelectrolyte modified micropipettes
Ion current oscillation of polyelectrolyte modified micropipettes in pH gradients was discovered and regulated. The periodic switch between the protonated/deprotonated state of modified micropipettes contributed to the spontaneous ICO observation.
Faraday Discuss., 2024, Advance Article
https://doi.org/10.1039/D4FD00135D
The electrochemical modulation of single molecule fluorescence
We demonstrate how to effectively modulate the fluorescence intensity of organic dye-labelled cell samples on an indium tin oxide surface using electrochemistry with redox-active mediators present in an oxygen scavenger buffer.
Faraday Discuss., 2024, Advance Article
https://doi.org/10.1039/D4FD00111G
A Micropore Nanoband Electrode Array for Enhanced Electrochemical Generation/Analysis in Flow Systems
Faraday Discuss., 2024, Accepted Manuscript
https://doi.org/10.1039/D4FD00125G
About this collection
We are delighted to share with you a selection of the papers associated with a Faraday Discussion on New horizons in nanoelectrochemistry. More information about the related event may be found here: http://rsc.li/nano-fd2024. Additional articles will be added to the collection as they are published. The final versions of all the articles presented and a record of the discussions will be published after the event.
At this Faraday Discussion meeting, new advances in nanoelectrochemistry will be discussed, in which individual, transient intermediate and fast charge transfer at the nanointerface can be probed, enabling a comprehensive understanding of electrochemistry at any scale (single entity to ensemble).
The aim of this meeting is to bring together researchers working on nanoelectrochemistry, whatever the scale. The Faraday Discussion will be organised into the following themes: Confined Nanopore Electrochemistry, Scanning Electrochemical Probe Microscopy, Spectroelectrochemistry and light active processes at the Nanointerface, Systems Nanoelectrochemistry: From single-entity to ensemble.
On behalf of the Scientific Committee, we hope you join us and participate in this exciting event, and that you enjoy these articles and the record of the discussion.