Themed collection New horizons in nanoelectrochemistry

The aim of this paper is to overview the meeting on New horizons in nanoelectrochemistry held at Nanjing University in China in October 2024 and to give some perspective to the work presented.

This introductory lecture prefaces the 2024 New Horizons in Nanoelectrochemistry Faraday Discussion.

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.

Deformation of liquid and gel electrolytes before touching the sample in SECCM and SGECM: equilibrium does not always exist.

Nafion blocks the aptamer's active sites from planar gold, while the aptamer retains its redox activity from nanoporous gold.

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.

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.

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.

Glutamate detection on a glutamate oxidase-modified Pt nanoelectrode with the smallest area to date.

A breakthrough nanoelectrode array technology for enhanced electrochemical generation/analysis is fabricated and characterised, with potentially wide-ranging application.

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.

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.

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.

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.

Interferometric scattering microscopy (iSCAT) allows visualizing individual petal-like MoS₂ sub-microparticles and monitoring operando their activity towards oxygen reduction reaction.

We present scanning electrochemical cell microscopy (SECCM) studies of Ag nucleation and growth on carbon and indium tin oxide (ITO) electrodes.

Imaging the single molecule electrocatalytic (EC′) process and correlating it with the conventional ensemble EC′ mechanism.

In this study, two approaches for step detection in single-entity electrochemistry data are developed and compared: discrete wavelet transforms and convolutional neural networks.

An integrated SECCM with LEIS is established by combining the preamplifier based EIS measurement with scanning electrochemical cell microscopy.

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.

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.

K238H-AeL nanopores with histidine sites were designed as single-molecule reactors for the measurement of single-molecule coordination reactions.

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.

Denaturation of individual ovalbumin induced by guanidine hydrochloride and lead ions was investigated by using non-sticky SiN_x nanonets.

The contributions of migration and electroosmotic flow induced by electrochemical redox molecules in dual-barrel SECCM were characterised.