Enantiomeric filtration separation of supramolecular framework membranes.

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.

A supramolecular approach of modified polyoxometalate polymerization and visualization of a single polymer chain.

An anthracene modified Anderson-Evans polyoxometalate was polymerized via supramolecular inclusion and then covalent coupling with the support of γ-cyclodextrin (γ-CD) under UV light irradiation. The formed main chain polymers of the inorganic polyanions self-assembled into fibrous bundles and single-strand chains were visualized and characterized via TEM and other techniques.