电化学发光
电化学
分子
反应性(心理学)
纳米技术
显微镜
催化作用
分辨率(逻辑)
材料科学
化学
扫描电化学显微镜
表征(材料科学)
化学物理
电极
物理化学
计算机科学
有机化学
物理
光学
人工智能
病理
替代医学
医学
作者
Jinrun Dong,Yang Xu,Ziqing Zhang,Jiandong Feng
标识
DOI:10.1002/anie.202200187
摘要
Classical electrochemical characterization tools cannot avoid averaging between the active reaction sites and their support, thus obscuring their intrinsic roles. Single-molecule electrochemical techniques are thus in high demand. Here, we demonstrate super-resolution imaging of Ru(bpy)32+ based reactions on Au plates using single-molecule electrochemiluminescence microscopy. By converting electrochemical signals into optical signals, we manage to achieve the ultimate sensitivity of single-entity chemistry, that is directly resolving the single photons from individual electrochemical reactions. High spatial resolution, up to 37 nm, further enables mapping Au chemical activity and the reaction kinetics. The spatiotemporally resolved dynamic structure-activity relationship on Au plates shows that the restructuring of catalysts plays an important role in determining the reactivity. Our approach may lead to gaining new insights towards evaluating and designing electrocatalytic systems.
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