Search results for "dimethyl tartrate"

showing 3 items of 3 documents

Spectroscopic and Structural Investigation of the Confinement of D and L Dimethyl Tartrate in Lecithin Reverse Micelles

2009

The confinement of D and L dimethyl tartrate in lecithin reverse micelles dispersed in cyclohexane has been investigated by FT-IR, polarimetry, electronic and vibrational circular dichroism (ECD and VCD), 1H NMR, and small-angle X-ray scattering (SAXS). Measurements have been performed at room temperature as a function of the solubilizate-to-surfactant molar ratio (R) at fixed lecithin concentration. The analysis of experimental data indicates that the dimethyl tartrate molecules are solubilized within reverse micelles in proximity to the surfactant head groups in the same way for the D and L forms. The encapsulation of dimethyl tatrate within lecithin reverse micelles involves changes in i…

lecithin dimethyl tartrate FT-IR polarimetry circular dichroism NMR SAXSfood.ingredientCyclohexanemicellesTartrateLecithinMicellePolyethylene Glycolschemistry.chemical_compoundfoodLecithinsMaterials ChemistryOrganic chemistryPhysical and Theoretical ChemistryTartratesModels StatisticalDose-Response Relationship DrugChemistry PhysicalViscosityChemistrySmall-angle X-ray scatteringTemperaturetechnology industry and agricultureElasticitySurfaces Coatings and FilmslecithinModels ChemicalSpectrophotometryVibrational circular dichroismMicellar solutionsPhosphatidylcholinesProton NMRPhysical chemistrylipids (amino acids peptides and proteins)Rheologydimethyl tartrate
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Confinement of chiral molecules in reverse micelles: FT-IR, polarimetric and VCD investigation on the state of dimethyl tartrate in sodium bis(2-ethy…

2008

Abstract The state of d and l -dimethyl tartrate confined within dry sodium bis(2-ethylhexyl) sulfosuccinate (AOT) reverse micelles dispersed in CCl 4 has been investigated by FT-IR spectroscopy, polarimetry, and vibrational circular dichroism (VCD). Measurements have been performed at 25 °C as a function of the solubilizate-to-surfactant molar ratio ( R ) at a fixed AOT concentration (0.158 M). The analysis of experimental data is consistent with the hypothesis that both enantiomers of dimethyl tartrate are mainly entrapped in the reverse micelles and located in proximity to the surfactant head-group region. The formation of this interesting self-organized chiral nanostructure involves som…

Circular dichroismInorganic chemistryInfrared spectroscopyTartrateMicellechemistry.chemical_compoundColloid and Surface ChemistryMonomerchemistryPulmonary surfactantVibrational circular dichroismPhysical chemistryEnantiomerDimethyl tartrate Sodium bis(2-ethylhexyl) sulfosuccinate Reverse micelles Chiral nanostructures FT-IR spectroscopy Vibrational circular dichroism Optical rotationColloids and Surfaces A: Physicochemical and Engineering Aspects
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Confinement of L and D dimethyl tartrate in reverse micelles: an FT-IR and VCD study

2008

confinement dimethyl tartrate reverse micelles
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