Electrochemical Reactions in Subfemtoliter-Droplets Studied with Plasmonics-Based Electrochemical Current Microscopy

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• 作者：Yixian Wang ; Xiaonan Shan ; Fengjuan Cui ; Jinghong Li ; Shaopeng Wang ; Nongjian Tao
• 刊名：Analytical Chemistry
• 出版年：2015
• 出版时间：January 6, 2015
• 年：2015
• 卷：87
• 期：1
• 页码：494-498
• 全文大小：354K
• ISSN：1520-6882

文摘

We report on a plasmonics-based electrochemical current imaging of redox reactions in aqueous droplets with diameters varying from a few hundred nanometers (tens of attoliter in volume) to a few micrometers. The imaging technique allows us to obtain cyclic voltammograms of multiple droplets on a gold electrode simultaneously and to examine the local redox reactions within a droplet. The results are supported by numerical simulations. The work demonstrates a new capability of studying electrochemistry in microdroplets, which offers an opportunity to understand electrochemical reactions within a small confined volume.