期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 -, 期 -, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202300867
关键词
Anions; Electrochemistry; Host-Guest Systems; Polymers; Solvent Effects
Mimicking Nature's polymeric protein architectures, designing hosts with binding cavities screened from bulk solvent is a promising approach to achieving anion recognition in competitive media. The authors present a synthetically tractable approach by directly incorporating potent supramolecular anion-receptive motifs into a polymeric scaffold. The polymeric hosts consistently outperform their monomeric analogues, with large halide binding enhancements observed in aqueous-organic solvent mixtures.
Mimicking Nature's polymeric protein architectures by designing hosts with binding cavities screened from bulk solvent is a promising approach to achieving anion recognition in competitive media. Accomplishing this, however, can be synthetically demanding. Herein we present a synthetically tractable approach, by directly incorporating potent supramolecular anion-receptive motifs into a polymeric scaffold, tuneable through a judicious selection of the co-monomer. A comprehensive analysis of anion recognition and sensing is demonstrated with redox-active, halogen bonding polymeric hosts. Notably, the polymeric hosts consistently outperform their monomeric analogues, with especially large halide binding enhancements of ca. 50-fold observed in aqueous-organic solvent mixtures. These binding enhancements are rationalised by the generation and presentation of low dielectric constant binding microenvironments from which there is appreciable solvent exclusion.
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