Maltose-based gelators having azobenzene as light-sensitive unit

Clemente, M.J. (Universidad de Zaragoza) ; Tejedor, R.M. (Universidad de Zaragoza) ; Romero, P. (Universidad de Zaragoza) ; Fitremann, J. ; Oriol, L. (Universidad de Zaragoza)

Resumen: Three light-sensitive amphiphiles, based on azobenzene, have been synthesized as supramolecular gelators. A hydrophobic chain with an azobenzene group incorporated at different positions was click coupled to a maltose polar head by a copper(I)-catalysed azide–alkyne [3 + 2] cycloaddition. The liquid crystalline and gel properties of these azo-amphiphilic materials have been studied. Two of these azo-gelators containing maltose give rise to stable gels in water or in a mixture of water and DMSO at room temperature. The chiral supramolecular assemblies of these gelators have been characterised by NMR, electron microscopy and circular dichroism (CD). The light-response of azo-amphiphiles in supramolecular gels has been studied. Also azo-gels, which contained mixtures of the azo-amphiphilic compounds and a similar structural hydrogelator, have been investigated.

Idioma: Inglés

DOI: 10.1039/c2ra21506c

Año: 2012

Publicado en: RSC Advances 2, 30 (2012), 11419-11431
ISSN: 2046-2069

Factor impacto JCR: 2.562 (2012)

Categ. JCR: CHEMISTRY, MULTIDISCIPLINARY rank: 46 / 151 = 0.305 (2012) - Q2 - T1

Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2011-27978-C02-01

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Química Orgánica (Dpto. Química Orgánica)