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Electropolymerization of robust conjugated microporous polymer membranes for rapid solvent transport and narrow molecular sieving.


ABSTRACT: Pore size uniformity is one of the most critical parameters in determining membrane separation performance. Recently, a novel type of conjugated microporous polymers (CMPs) has shown uniform pore size and high porosity. However, their brittle nature has prevented them from preparing robust membranes. Inspired by the skin-core architecture of spider silk that offers both high strength and high ductility, herein we report an electropolymerization process to prepare a CMP membrane from a rigid carbazole monomer, 2,2',7,7'-tetra(carbazol-9-yl)-9,9'-spirobifluorene, inside a robust carbon nanotube scaffold. The obtained membranes showed superior mechanical strength and ductility, high surface area, and uniform pore size of approximately 1 nm. The superfast solvent transport and excellent molecular sieving well surpass the performance of most reported polymer membranes. Our method makes it possible to use rigid CMPs membranes in pressure-driven membrane processes, providing potential applications for this important category of polymer materials.

SUBMITTER: Zhou Z 

PROVIDER: S-EPMC7578036 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature

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Electropolymerization of robust conjugated microporous polymer membranes for rapid solvent transport and narrow molecular sieving.

Zhou Zongyao Z   Li Xiang X   Guo Dong D   Shinde Digambar B DB   Lu Dongwei D   Chen Long L   Liu Xiaowei X   Cao Li L   Aboalsaud Ammar M AM   Hu Yunxia Y   Lai Zhiping Z  

Nature communications 20201021 1


Pore size uniformity is one of the most critical parameters in determining membrane separation performance. Recently, a novel type of conjugated microporous polymers (CMPs) has shown uniform pore size and high porosity. However, their brittle nature has prevented them from preparing robust membranes. Inspired by the skin-core architecture of spider silk that offers both high strength and high ductility, herein we report an electropolymerization process to prepare a CMP membrane from a rigid carb  ...[more]

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