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Issue 82, 2020
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Spatially resolved electrochemistry enabled by thin-film optical interference

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Abstract

Herein, we report an approach with sub-micrometer spatial resolution for studying local electrochemistry based on thin-film optical interference. The spatial resolution is achieved by successive interferometric imaging of a nanochannel membrane coated electrode during an electrochemical (EC) reaction. The EC reaction of redox molecules on the electrode induces variation of the refractive index of the nanochannel membrane, leading to changes of the intensity of interferometric light. Local EC reactions thus can be studied from the optical signal. The refractometry-based approach is versatile and label-free, and has promising application in nanosensing and nanocatalysis.

Graphical abstract: Spatially resolved electrochemistry enabled by thin-film optical interference

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Supplementary files

Article information


Submitted
02 Aug 2020
Accepted
01 Sep 2020
First published
01 Sep 2020

Chem. Commun., 2020,56, 12359-12362
Article type
Communication

Spatially resolved electrochemistry enabled by thin-film optical interference

Y. Wang, Q. Yang and B. Su, Chem. Commun., 2020, 56, 12359
DOI: 10.1039/D0CC05265E

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