Journal
RSC ADVANCES
Volume 2, Issue 30, Pages 11419-11431Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2ra21506c
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Funding
- MINECO, Spain [MAT2011-27978-C02-01]
- Fondo Europeo de Desarrollo Regional (FEDER)
- Government of Aragon
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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.
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