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High Proton‐Conductivity in Covalently Linked Polyoxometalate‐Organoboronic Acid‐Polymers
Author(s) -
Li Shujun,
Zhao Yue,
Knoll Sebastian,
Liu Rongji,
Li Gang,
Peng Qingpo,
Qiu Pengtao,
He Danfeng,
Streb Carsten,
Chen Xuenian
Publication year - 2021
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202104886
Subject(s) - polyoxometalate , polymer , covalent bond , monomer , polymer chemistry , conductivity , oxide , materials science , chemistry , chemical engineering , organic chemistry , engineering , catalysis
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.