Optically active polyelectrolyte multilayers as membranes for chiral separations.

Hassan H Rmaile; Joseph B Schlenoff

doi:10.1021/ja035251x

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Optically active polyelectrolyte multilayers as membranes for chiral separations.

Hassan H Rmaile·Joseph B Schlenoff

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Abstract

Ultrathin films of chiral polyelectrolyte complex, prepared by the multilayering process, exhibit selectivity in the membrane separations of optically active compounds, such as l- and d-ascorbic acid. The flux through these polyelectrolyte multilayers, PEMUs, is exceptionally high and may be controlled by the concentration of salt present in the permeating solutions. Both in-situ ATR-FTIR and chiral capillary electrochromatography indicate that flux selectivity is mainly kinetically controlled, stemming from a difference in diffusion rates of various enantiomers through PEMUs, rather than a difference in partitioning.

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Ascorbic Acid Dihydroxyphenylalanine Electrolytes Membranes, Artificial Peptides Polymers Stereoisomerism Viologens Journal Article Research Support, Non-U.S. Gov't

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Hassan H Rmaile, Joseph B Schlenoff. 2003-06-04. Optically active polyelectrolyte multilayers as membranes for chiral separations.. https://doi.org/10.1021/ja035251x

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