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Halogen Bonding Heteroditopic Materials for Cooperative Sodium Iodide Binding and Extraction.

ABSTRACT: A series of novel heteroditopic halogen bonding (XB) receptor functionalised silica based materials, containing mono- and bis-iodotriazole benzo-15-crown-5 groups are investigated for the cooperative binding and extraction of sodium halide ion-pair species from aqueous solution. Characterisation of the XB materials by CHN elemental analysis, ¹³ C CP/MAS NMR and ATR-FTIR spectroscopies confirms and quantifies the successful incorporation of the ion-pair receptor frameworks to the silica material. ICP-MS solid-liquid extraction studies demonstrate the bidentate XB functionalised material is capable of NaI extraction from water. Importantly, cooperative XB-mediated sodium halide ion-pair binding is determined to be crucial to the material's extraction capabilities, impressively demonstrating a two-fold enhancement in sodium iodide extraction efficiency relative to a heteroditopic hydrogen bonding receptor functionalised silica material analogue.

SUBMITTER: Docker A

PROVIDER: S-EPMC8596695 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature

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Halogen Bonding Heteroditopic Materials for Cooperative Sodium Iodide Binding and Extraction.

Docker Andrew A Stevens James G JG Beer Paul D PD

Chemistry (Weinheim an der Bergstrasse, Germany) 20211001 59

A series of novel heteroditopic halogen bonding (XB) receptor functionalised silica based materials, containing mono- and bis-iodotriazole benzo-15-crown-5 groups are investigated for the cooperative binding and extraction of sodium halide ion-pair species from aqueous solution. Characterisation of the XB materials by CHN elemental analysis, <sup>13</sup> C CP/MAS NMR and ATR-FTIR spectroscopies confirms and quantifies the successful incorporation of the ion-pair receptor frameworks to the silic ...[more]

PMID: 34520586

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