Halogen Bonding Heteroditopic Materials for Cooperative Sodium Iodide Binding and Extraction
| Autor: | Paul D. Beer, Andrew Docker, James G. Stevens |
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| Rok vydání: | 2021 |
| Předmět: |
Anions
Sodium Hot Paper Halide chemistry.chemical_element Sodium Iodide Sigma-hole interactions Catalysis chemistry.chemical_compound Halogens Polymer chemistry Ion-pair recognition Solid phase extraction Ions Halogen bond Aqueous solution Hydrogen bond Communication Organic Chemistry Extraction (chemistry) Hydrogen Bonding Solid-liquid extraction General Chemistry Communications chemistry Sodium iodide Halogen bonding |
| Zdroj: | Chemistry (Weinheim an Der Bergstrasse, Germany) |
| ISSN: | 1521-3765 0947-6539 |
| DOI: | 10.1002/chem.202102952 |
| Popis: | 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, 13C 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. A series of halogen bonding (XB) heteroditopic ion‐pair receptors comprising of benzo15‐crown‐5 cation binding moieties and iodotriazole XB donors are covalently integrated into silica QuadraSilTM based solid supports. Investigations into their sodium halide extraction capabilities demonstrated their ability as NaI extraction agents from water. Comparison with HB analogues demonstrate the crucial role of XB‐mediated NaI ion‐pair binding in the extraction performance. |
| Databáze: | OpenAIRE |
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