Monitoring single Au₃₈ nanocluster reactions via electrochemiluminescence

Abstract

Herein, we report for the first time single Au38 nanocluster reaction events of highly efficient electrochemiluminescence (ECL) with tri-n-propylamine radicals as a reductive co-reactant at the surface of an ultramicroelectrode...

Surface environment complication makes Ag29 nanoclusters more robust and leads to their unique packing in the supracrystal lattice

“…9–13 Besides, metal nanoclusters have been used as ideal platforms for the meticulous investigation of structure–property correlations. 14–20 Consequently, metal nanoclusters are an emerging class of programmable nanomaterials for several promising applications, such as catalysis, drug delivery, energy storage, and biological applications. 21–24…”

Dual-Mechanism Quenching of Electrochemiluminescence Immunosensor Based on a Novel ECL Emitter Polyoxomolybdate-Zirconia for 17β-Estradiol Detection

“…The absorption peaks of 1444 and 1504 cm −1 were associated with the N−B−N vibration (B was benzene), while the two peaks of 1575 and 1638 cm −1 were N�Q�N structures of Investigation of the Mechanism of the ECL Immunosensce. ECL luminescence mechanism is usually divided into annihilation type 32,33 and co-reactant participation type 34,35 according to the method of potential control in the luminescence process and the types of substances involved in the luminescence process. To explore the luminescent mechanism of the novel luminophor, the ECL intensity of the POM-ZrO 2 -modified electrode was measured in different buffer solutions.…”

“…ECL luminescence mechanism is usually divided into annihilation type , and co-reactant participation type , according to the method of potential control in the luminescence process and the types of substances involved in the luminescence process. To explore the luminescent mechanism of the novel luminophor, the ECL intensity of the POM-ZrO 2 -modified electrode was measured in different buffer solutions.…”

Seeing Is Not Believing: Filtering Effects on Random Nature in Electrochemical Measurements of Single-Entity Collision

“…In recent years, the advancing method of single-entity electrochemistry of collision (SEEC) has been demonstrated as an effective approach for direct electrochemical characterization of single freely diffusing entities (e.g., cells, nanoparticles, molecules, etc. ). − This avoids the average limitations of traditional electrochemistry, uncovering the randomness and heterogeneity of individual entities. In SEEC measurements, a microelectrode provides a nanoscale local electric field confinement in the vicinity of the electrode that can accommodate a single analyte. ,− For a typical collision event, single analytes stochastically collide on the electrode surface, undergoing or blocking the electrochemical process and resulting in weak transient current signals .…”

“…). − This avoids the average limitations of traditional electrochemistry, uncovering the randomness and heterogeneity of individual entities. In SEEC measurements, a microelectrode provides a nanoscale local electric field confinement in the vicinity of the electrode that can accommodate a single analyte. ,− For a typical collision event, single analytes stochastically collide on the electrode surface, undergoing or blocking the electrochemical process and resulting in weak transient current signals . The duration time, current amplitude, and integrated charge of signals are important parameters acquired in most SEEC measurements for describing the physical and chemical characteristics of single entities (e.g., size, geometry, catalytic performance, etc.…”