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dc.contributor.authorNebot Carda, Vicent J.
dc.contributor.authorEscuder, Beatriu
dc.contributor.authorMiravet, Juan F.
dc.contributor.authorSmets, Johan
dc.contributor.authorFernández Prieto, Susana
dc.identifier.citationNEBOT, Vicent J., et al. Interplay of Molecular Hydrogelators and SDS Affords Responsive Soft Matter Systems with Tunable Properties. Langmuir, 2013, vol. 29, no 30, p. 9544-9550.ca_CA
dc.description.abstractThe gelation efficiency of low molecular weight bolaamphiphilic hydrogelators 1 and 2 is influenced by the presence of SDS micelles. Similarly, the critical micellar concentration value of SDS is reduced in the presence of the studied molecular hydrogelators. Rheological measurements indicate that the strength of the hydrogels can be modulated with SDS, the gels becoming weaker in the presence of micelles This behavior has been rationalized with the help of NMR studies using diffusion measurements and NOE correlations. The results obtained clearly point to the formation of mixed micelles composed of SDS and the hydrogelators. In the case of 1, the gelator:SDS ratio in the mixed micelles has been estimated from solubility studies to be ca. 1:2.5. Electron microscopy reveals that when SDS is present, the morphology of the xerogels is modified in its appearance at the micrometer scale but fibers with diameter in the nanometer range are observe in all the cases. The interplay between the surfactant and the gelators provides with new possibilities for the modulation of both gel and micelle formation. Examples are shown to highlight the potential usefulness of this type of interconnected system. In one case the release of a gel entrapped dye is modulated by the presence of SDS and sodium chloride. In another example, an intricate system that responds to a temperature excursion by irreversible micelle disassembly is shown.ca_CA
dc.description.sponsorShipWe thank Spanish Ministry of Science and Innovation (Grants CTQ2009-13961 and CTQ2012-37735) and Universitat Jaume I (Grant P1.1B2012-25) for financial support.ca_CA
dc.format.extent7 p.ca_CA
dc.publisherAmerican Chemical Societyca_CA
dc.relation.isPartOfLangmuir (2013) vol. 29, no 30ca_CA
dc.rightsCopyright © American Chemical Societyca_CA
dc.subjectVesicle formationca_CA
dc.titleInterplay of Molecular Hydrogelators and SDS Affords Responsive Soft Matter Systems with Tunable Propertiesca_CA

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