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In-situ Referencing Method for Heterodyne-detected Vibrational Sum Frequency Generation Measurements at Liquid/Metal Interfaces

The in-situ characterization of electrolyte solution/metal electrode interfaces is crucial for an understanding of various electrochemical processes. Here, we propose the referencing method for heterodyne-detected vibrational sum frequency generation measurements that enable determination of the up/...

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Bibliographic Details
Published in:Chemistry letters 2019-11, Vol.48 (11), p.1387-1390
Main Authors: Nihonyanagi, Satoshi, Sayama, Atsushi, Ohshima, Yasuhiro, Tahara, Tahei
Format: Article
Language:English
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Summary:The in-situ characterization of electrolyte solution/metal electrode interfaces is crucial for an understanding of various electrochemical processes. Here, we propose the referencing method for heterodyne-detected vibrational sum frequency generation measurements that enable determination of the up/down orientation of molecules at electrolyte/electrode interfaces. Proof-of-concept experiments of the proposed method were performed for a self-assembled monolayer of 1-octadecanethiol on a platinum surface in air as well as in water. This study opens a new way to explore the structure and orientation of molecules at buried electrolyte/electrode interfaces.
ISSN:0366-7022
1348-0715
DOI:10.1246/cl.190606