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Selective Recognition and Extraction of Short‐Chain Perfluoroalkyl Carboxylates by a Supramolecular Receptor
Author(s) -
Wang XueZhi,
Chen Damien W.,
FadaeiTirani Farzaneh,
Zhou XiaoPing,
Severin Kay
Publication year - 2025
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202504880
Subject(s) - supramolecular chemistry , chemistry , hydrogen bond , carboxylate , adduct , extraction (chemistry) , chloride , aqueous solution , fluoride , molecular recognition , receptor , phosphate , stereochemistry , inorganic chemistry , organic chemistry , crystal structure , molecule , biochemistry
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.