Imidazolium based gemini amphiphiles derived from L-valine. Structural elements and surfactant properties
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Otros documentos de la autoría: Valls Ten, Adriana; Altava, Belen; Aseyev, Vladimir; Garcia-Verdugo, Eduardo; Luis, Santiago V.
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https://doi.org/10.1016/j.molliq.2021.117434 |
Metadatos
Título
Imidazolium based gemini amphiphiles derived from L-valine. Structural elements and surfactant propertiesAutoría
Fecha de publicación
2021-09-02Editor
ElsevierISSN
0167-7322Cita bibliográfica
VALLS, Adriana, et al. Imidazolium based gemini amphiphiles derived from L-valine. Structural elements and surfactant properties. Journal of Molecular Liquids, 2021, vol. 341, p. 117434.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://www.sciencedirect.com/journal/journal-of-molecular-liquidsVersión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
Imidazolium amphiphiles often display excellent surfactants properties, while amide functionalities and chirality can implement self-assembly. The introduction of these functionalities in imidazolium gemini amphiphiles ... [+]
Imidazolium amphiphiles often display excellent surfactants properties, while amide functionalities and chirality can implement self-assembly. The introduction of these functionalities in imidazolium gemini amphiphiles is expected to allow tuning their aggregation, achieving a higher emulsifying capacity of interest for practical applications. l-valine-derived gemini surfactants have been prepared and their aggregation investigated using NMR, UV-CD, fluorescence, LS or microscopy. The imidazolium gemini amphiphiles synthetized, presented excellent surfactant properties. The aromatic substitution pattern defines additional geometric constrains facilitating a fine tune of their properties, displaying the para-substituted compound best properties. This can be associated to facilitating the required conformational organization of polar and apolar fragments, while reducing coulombic repulsions between imizadolium rings. Two critical aggregation concentrations (CACs) were observed by fluorescence in aqueous media, with the formation of well-defined vesicles in the second step. Dynamic equilibria between aggregates of different sizes seem to be present. These gemini surfactants revealed of interest as emulsifiers for oil/water systems and for controlled fragrance delivery using (R)-limonene as a benchmark volatile compound. [-]
Publicado en
Journal of Molecular Liquids Volume 341, 1 November 2021, 117434Datos relacionados
https://www.sciencedirect.com/science/article/pii/S0167732221021589#m0005Entidad financiadora
Ministerio de Ciencia, Innovación y Universidades (Spain) | Universitat Jaume I | Ministerio de Ciencia e Innovación
Código del proyecto o subvención
RTI2018-098233-B-C22(MCIU/AEI/FEDER, UE) | UJI-B2019-40. A.V. | FPU15/01191
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© 2021 Elsevier B.V. All rights reserved.
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info:eu-repo/semantics/restrictedAccess
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