Vacuum and Surface Science
Online ISSN : 2433-5843
Print ISSN : 2433-5835
Special Issue : Secondary Ion Mass Spectrometry (SIMS) —Recent Trends and Organic Analysis—
Secondary Ion Mass Spectrometry of Organic Materials Using Ionic Liquids
Yukio FUJIWARANaoaki SAITO
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2018 Volume 61 Issue 7 Pages 446-451

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Abstract

This article provides an overview of the authors' activity on organic secondary ion mass spectrometry (organic SIMS) using ionic liquids. Ionic liquids, i.e., molten salts with a melting point less than 100℃, have negligible vapor pressures, so that they are compatible with ultra-high vacuum. They are divided into two groups : aprotic ionic liquids and protic ionic liquids. Both ionic liquids were tested as liquid matrices and as primary ion beams in organic SIMS. Protic ionic liquids proved to be effective to enhance molecular secondary ion intensities, whereas aprotic ionic liquids were not useful. Among ionic liquids, alkylammonium titrates such as propylammonium nitrate will be most promising for organic SIMS.

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この記事はクリエイティブ・コモンズ [表示 - 非営利 4.0 国際]ライセンスの下に提供されています。
https://creativecommons.org/licenses/by-nc/4.0/deed.ja
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