Enantiomeric filtration separation of supramolecular framework membranes

Abstract

A two-dimensional supramolecular framework with a tetragonal structure is constructed via host–guest interaction of a pillar[5]arene grafted polyanion with a modified porphyrin. The membrane of the framework with a chiral counterion exhibits enantiomeric selectivity during the filtration of racemic molecules with amino groups, demonstrating broadened potential in chiral separations.