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High Proton-Conductivity in Covalently Linked Polyoxometalate-Organoboronic Acid-Polymers.

ABSTRACT: The controlled bottom-up design of polymers with metal oxide backbones is a grand challenge in materials design, as it could give unique control over the resulting chemical properties. Herein, we report a 1D-organo-functionalized polyoxometalate polymer featuring a purely inorganic backbone. The polymer is self-assembled from two types of monomers, inorganic Wells-Dawson-type polyoxometalates, and aromatic organo-boronates. Their covalent linkage results in 1D polymer strands, which combine an inorganic oxide backbone (based on B-O and Nb-O linkages) with functional organic side-chains. The polymer shows high bulk proton conductivity of up to 1.59×10^-1 S cm^-1 at 90 °C and 98 % relative humidity. This synthetic approach could lead to a new class of organic-inorganic polymers where function can be designed by controlled tuning of the monomer units.

SUBMITTER: Li S

PROVIDER: S-EPMC8361676 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature

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High Proton-Conductivity in Covalently Linked Polyoxometalate-Organoboronic Acid-Polymers.

Li Shujun S Zhao Yue Y Knoll Sebastian S Liu Rongji R Li Gang G Peng Qingpo Q Qiu Pengtao P He Danfeng D Streb Carsten C Chen Xuenian X

Angewandte Chemie (International ed. in English) 20210628 31

The controlled bottom-up design of polymers with metal oxide backbones is a grand challenge in materials design, as it could give unique control over the resulting chemical properties. Herein, we report a 1D-organo-functionalized polyoxometalate polymer featuring a purely inorganic backbone. The polymer is self-assembled from two types of monomers, inorganic Wells-Dawson-type polyoxometalates, and aromatic organo-boronates. Their covalent linkage results in 1D polymer strands, which combine an i ...[more]

PMID: 34038607

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