化学成像
化学
拉曼光谱
化学反应
分辨率(逻辑)
等离子体子
化学种类
图像分辨率
纳米技术
分析化学(期刊)
光电子学
光学
有机化学
材料科学
高光谱成像
物理
遥感
人工智能
计算机科学
地质学
摘要
Reproducible chemical and chemical reaction nanoimaging at solid–liquid interfaces remains challenging, particularly when resolutions on the order of a few nanometers are sought. In this work, we demonstrate the latter through liquid-tip-enhanced Raman (TER) measurements that target gold nanoplates functionalized with 4-mercaptobenzonitrile (MBN). In addition to chemical imaging and local optical field nanovisualization with high spatial resolution, we observe the signatures of 4-mercaptobenzoic acid, which forms as a result of plasmon-induced hydrolysis of MBN. Evidently, the solvent leads to distinct plasmon-induced/enhanced chemical reaction pathways that have not been documented. This work shows that such reactions that take place at solid–liquid interfaces can be tracked with a record sub-3-nm spatial resolution via TER spectral nanoimaging in liquids.
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