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Article Dans Une Revue Soft Matter Année : 2022

Adjusting the water-sensitivity of sugar/boronate-based organogels

Résumé

During the investigation of the water-sensitivity of (arylboronate alkylglucoside)-based organogels, we evaluated a series of twelve potential organogelators. They were synthesised in a single step from the corresponding arylboronic acids and alkylglucosides. Eight of them showed organogelation abilities in three solvents (toluene, cyclohexane, and ethyl myristate). Conformational minimisations of the potential organogelators permitted a clear relationship between the arylboronate orientation and the gelation effectiveness to be established. These gels were characterised by rheometry and SEM which revealed a gel-state originating from the self-assembly of the organogelators into long entangled fibres. SAXS confirmed the mode of packing in a hexagonal phase. Gels in toluene were found to be water-sensitive both after addition of a small amount of water and immersion into water. This study demonstrated that the main parameter impacting the water-sensitivity was the length of the alkyl chain at the anomeric position of the glucoside unit, much more than the functionalisation of an arylboronate moiety.
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Dates et versions

hal-03840404 , version 1 (15-11-2022)

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Andreas Ludwig, Noemie Ourvois-Maloisel, Arnaud Saint-Jalmes, Franck Artzner, Jean Paul Guegan, et al.. Adjusting the water-sensitivity of sugar/boronate-based organogels. Soft Matter, 2022, 18 (47), pp.9026-9036. ⟨10.1039/D2SM01305C⟩. ⟨hal-03840404⟩
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