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a b s t r a c tMolecularly imprinted membranes (MIPMs) and molecularly imprinted nanofiber membranes (MINFMs) were prepared from polysulfone with aldehyde (PSf-CHO-05 or PSf-CHO-10) and N-␣-benzyloxycarbonyl-d-glutamic acid (Z-d-Glu) or N-␣-benzyloxycarbonyl-l-glutamic acid (Z-l-Glu) as a print molecule. Those two types of molecularly imprinted membrane, such as MIPMs and MINFMs, incorporated the enantiomer, of which absolute configuration was same as that of the print molecule, in preference to the corresponding antipode. In other words, the membranes imprinted by the d-isomer preferentially adsorbed the d-isomer and vice versa. Those two types of membrane showed chiral separation ability by membrane transport. Against expectation, transport of the enantiomer preferentially adsorbed in the membrane was retarded, in other words, the enantiomer less adsorbed in the membrane was selectively transported. The fluxes through the molecularly imprinted nanofiber membranes gave one to two orders of magnitude higher than those of usual molecularly imprinted membranes without depression of permselectivity. The present study demonstrated that molecularly imprinted nanofiber membrane gave high flux without depression of permselectivity. A breakthrough in membrane separation would be realized by adopting molecularly imprinted nanofiber membranes.

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After brief reviews on the high sensitivity to water content and multivalent-ion adsorption of a peak in the homogeneous NIPA/SA gels' the small angle X-ray scattering (SAXS) profiles, the influence of the crosslinker concentration, which gives rise to the heterogeneity in the NIPA/SA gel, on the SAXS peak has been reported. It has been found that there is a considerable change in the location and intensity of the SAXS peak around a certain crosslinker concentration where the gels become opaque.