Processing supramolecular framework for free interconvertible liquid separation

Guohua Zhang, Bingyu Li, Yan Zhou, Xiaofei Chen, Bao Li, Zhong-Yuan Lu () and Lixin Wu ()
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Guohua Zhang: Jilin University
Bingyu Li: Jilin University
Yan Zhou: Jilin University
Xiaofei Chen: Jilin University
Bao Li: Jilin University
Zhong-Yuan Lu: Jilin University
Lixin Wu: Jilin University

Nature Communications, 2020, vol. 11, issue 1, 1-9

Abstract: Abstract Nanoporous structures constructed by small molecular components exhibited vigorous materials potentials. While maintianing uniform porosity and functional properties, more applicable processing methods for the solid powders need to be considered and the improvement of binding interactions represents a preferable approach for structural flexibility. Here, by combining ionic interaction and host-guest inclusion, we constructed flexible supramolecular frameworks composing of inorganic polyanionic clusters, cationic organic hosts, and a bridging guest. The formed layer framework structure assemblies grew into nano-fibers and then supramolecular gels, donating highly convenient processability to porous materials. A simple spin-coating generated a new type of liquid separation membranes which showed structural stability for many liquids. The surface properties can be facilely modulated via filling a joystick liquid and then a hydrophilic/hydrophobic liquid into the porous frameworks, providing in-situ consecutive switchings for cutting liquids. This strategy extends the potential of flexible supramolecular frameworks for responsive materials in the laboratory and in industry.

Date: 2020
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DOI: 10.1038/s41467-019-14227-6

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