Fundamental investigation on fluorous nanoemulsion optodes: effect of matrix fluorination on selectivity

IF 1.8 4区化学 Q3 CHEMISTRY, ANALYTICAL

Analytical Sciences Pub Date : 2024-05-25 DOI:10.1007/s44211-024-00603-w

Soraka Iwamoto, Kenji Sueyoshi, Tatsuro Endo, Hideaki Hisamoto

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Abstract

As fundamental investigation on fluorous nanoemulsion (NE) optodes for highly selective perfluorooctanesulfonate (PFOS⁻) sensing, the effect of matrix fluorination on selectivity was investigated. Due to the high hydrophobicity of PFOS⁻ itself, it responded in exhaustive mode regardless of the fluorination ratio of the matrix, and the lowest detectable PFOS⁻ concentration was on the order of 10⁻⁷ to 10⁻⁶ M. On the other hand, the response of non-fluorous interfering anions was suppressed as the fluorination ratio of the matrix increased. It was revealed that the relative selectivity of PFOS⁻ for hydrophobic anions, ClO₄⁻, SCN⁻, and 1-octanesulfonate (OS⁻) was improved by more than one order of magnitude, up to nearly two orders of magnitude, and that it was also improved by less than one order of magnitude for hydrophilic anions, Br⁻, Cl⁻, and SO₄⁻, in logarithmic selectivity coefficient (log \({K}_{{PFOS}^{-}, j}^{opt}\)).

Graphical abstract

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荧光纳米乳液光刻胶的基础研究：基质氟化对选择性的影响。

作为对用于高选择性全氟辛烷磺酸（PFOS-）传感的荧光纳米乳液（NE）光电二极管的基础研究，研究了基质氟化对选择性的影响。由于全氟辛烷磺酸本身具有很高的疏水性，因此无论基体的氟化率如何，它都会以穷举模式响应，最低可检测到的全氟辛烷磺酸浓度在 10-7 至 10-6 M 之间。研究表明，PFOS- 对疏水性阴离子 ClO4-、SCN- 和 1-辛烷磺酸（OS-）的相对选择性提高了一个数量级以上，最高可达近两个数量级，而对亲水性阴离子 Br-、Cl- 和 SO4- 的对数选择性系数（log K PFOS - , j opt）也提高了不到一个数量级。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Analytical Sciences 化学-分析化学

CiteScore

2.90

自引率

18.80%

发文量

232

审稿时长

1 months

期刊介绍： Analytical Sciences is an international journal published monthly by The Japan Society for Analytical Chemistry. The journal publishes papers on all aspects of the theory and practice of analytical sciences, including fundamental and applied, inorganic and organic, wet chemical and instrumental methods. This publication is supported in part by the Grant-in-Aid for Publication of Scientific Research Result of the Japanese Ministry of Education, Culture, Sports, Science and Technology.