ECL-Based Readout of Electric Field-Induced Fine-Tuning of Redox Activity

IF 3.5 4区化学 Q2 ELECTROCHEMISTRY

ChemElectroChem Pub Date : 2025-02-21 DOI:10.1002/celc.202500012

Changlin Zhou, Leslie R. Arias-Aranda, Dr. Gerardo Salinas, Dr. Laurent Bouffier, Prof. Dr. Zonghua Wang, Prof. Dr. Alexander Kuhn, Prof. Dr. Neso Sojic

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Abstract

Magnesium, a highly reactive alkaline earth metal, acts spontaneously as a strong reducing agent. In this work, the redox reactivity of Mg is fine-tuned selectively in a wireless manner by means of bipolar electrochemistry (BE). This is demonstrated by mapping the spatial electroactivity of Mg via the electrochemiluminescence (ECL) emission of the Ru(bpy)₃²⁺/S₂O₈²⁻ system. Asymmetric ECL patterns are obtained by controlling the applied external electric field. The ECL intensity is increased by up to approximately 80 % at the cathodic extremity whereas a 50 % decrease is observed at the anodic side of a bipolar electrode. Additionally, the influence of the spatial distribution of the electric field on the reactivity of Mg and its concomitant ECL emission is evaluated, producing complex luminescent patterns. These findings, illustrate the wireless modulation of redox reactivity by BE.

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基于ecl的电场诱导氧化还原活性微调读数

镁是一种活性很强的碱土金属，可以自发地充当强还原剂。在这项工作中，通过双极电化学（BE）以无线方式选择性地微调了Mg的氧化还原反应性。这是通过Ru(bpy)32+/S2O82 -体系的电化学发光（ECL）发射来映射Mg的空间电活性来证明的。通过控制外加电场，可以得到非对称的ECL图形。在阴极端，ECL强度增加了大约80%，而在双极电极的阳极侧，ECL强度下降了50%。此外，电场的空间分布对Mg的反应性及其伴随的ECL发射的影响进行了评估，产生了复杂的发光模式。这些发现说明了BE对氧化还原反应性的无线调制。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

ChemElectroChem ELECTROCHEMISTRY-

CiteScore

7.90

自引率

2.50%

发文量

515

审稿时长

1.2 months

期刊介绍： ChemElectroChem is aimed to become a top-ranking electrochemistry journal for primary research papers and critical secondary information from authors across the world. The journal covers the entire scope of pure and applied electrochemistry, the latter encompassing (among others) energy applications, electrochemistry at interfaces (including surfaces), photoelectrochemistry and bioelectrochemistry.