Self-organizing properties of monosubstituted sucrose fatty acid esters: the effects of chain length and unsaturation |
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Authors: | Molinier Valérie Kouwer Paul J J Fitremann Juliette Bouchu Alain Mackenzie Grahame Queneau Yves Goodby John W |
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Institution: | Laboratoire de Chimie Organique, UMR 5181 CNRS-UCBL-INSA, Institut National des Sciences Appliquées de Lyon, Bat. J. Verne, 20 avenue A. Einstein, 69621 Villeurbanne Cedex, France. |
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Abstract: | Three families of mono-substituted sucrose fatty acid esters were prepared by enzymatic and classical synthetic procedures, and their self-assembly and self-organizational properties were investigated by thermal polarised light microscopy, differential scanning calorimetry and X-ray diffraction. The properties were evaluated as a function of the fatty acid chain length. For the lower homologues of the series columnar liquid-crystalline stacking structures were found, whereas for the higher homologues, lamellar phases predominated. A model for the columnar stacking arrangement, consisting of a unique arrangement of the molecules which could lead to the creation of multiple internal ion channels between the hydrophobic interior and the hydrophilic exterior of the columns, is suggested. |
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Keywords: | liquid crystals self‐ assembly sucrose surfactants |
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