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

Autor: Andreas D. Ludwig, Noémie Ourvois-Maloisel, Arnaud Saint-Jalmes, Franck Artzner, Jean-Paul Guégan, Olivier Tasseau, Fabienne Berrée, Loïc Lemiègre
Přispěvatelé: Ecole Nationale Supérieure de Chimie de Rennes (ENSCR), Institut des Sciences Chimiques de Rennes (ISCR), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique de Rennes (IPR), Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS), We acknowledge the Ministère de l’Education Nationale, de la Recherche et de la Technologie.
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Soft Matter
Soft Matter, 2022, 18, pp.9026-9036. ⟨10.1039/D2SM01305C⟩
ISSN: 1744-683X
1744-6848
DOI: 10.1039/D2SM01305C⟩
Popis: International audience; 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.
Databáze: OpenAIRE
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