An exfoliated redox active imide covalent organic framework for metal free hydrogen gas sensing†
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Date
2023
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Abstract
A two dimensional (2D) redox active donor–acceptor COF made
of triphenylamine (TPA) and naphthalenediimide (NDI) acted as an
efficient hydrogen chemisresistor and performed better than
traditional metal oxides. Calculations have shown that the charge
transfer interaction between H2 and an NDI linker through a
carbonyl functionality enables a change in the resistance of the
material upon exposure to H2 gas.