Volume 137, Issue 22 e202504880
Forschungsartikel

Selective Recognition and Extraction of Short-Chain Perfluoroalkyl Carboxylates by a Supramolecular Receptor

Xue-Zhi Wang

Xue-Zhi Wang

Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, 1015 Switzerland

College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Supramolecular Coordination Chemistry, Jinan University, Guangzhou, 510632 P.R. China

Medical Imaging Center, The First Affiliated Hospital, Jinan University, Guangzhou, 510632 P.R. China

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Damien W. Chen

Damien W. Chen

Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, 1015 Switzerland

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Farzaneh Fadaei-Tirani

Farzaneh Fadaei-Tirani

Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, 1015 Switzerland

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Xiao-Ping Zhou

Xiao-Ping Zhou

College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Supramolecular Coordination Chemistry, Jinan University, Guangzhou, 510632 P.R. China

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Kay Severin

Corresponding Author

Kay Severin

Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, 1015 Switzerland

E-mail: [email protected]

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First published: 24 March 2025

Abstract

A supramolecular receptor for short-chain perfluoroalkyl carboxylates was developed. The receptor displays a cage-like geometry, with a defined binding site for the carboxylate head groups and an opening for the perfluoroalkyl side chains. The anionic guests are bound via multiple CH···O hydrogen bonds, as revealed by the crystallographic analysis of an adduct between the receptor and trifluoroacetate. The receptor can be used for the selective extraction of perfluoroalkyl carboxylates from buffered aqueous solutions containing fluoride, chloride, nitrate, carbonate, acetate, and phosphate.

Conflict of Interests

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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