![]() These products dramatically activate the POD-like activity of PB and further trigger the oxidation of the uncharged substrate 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonate) (ABTS) to cationic species (ABTS˙ +) in the channels. In the as-proposed hybrid channels, GOx catalyzes the oxidation of only D-Glu to gluconic acid and H 2O 2. Using glucose enantiomers ( L/ D-Glu) as model analysts, a target-activated strategy is used for chiral molecule recognition by combining glucose oxidase (GOx) with PB-modified wood channels. Inspired by the natural mineralization of wood, Prussian blue (PB), an artificial peroxidase (POD)-like mimetic, is mineralized in wood channels via a contra-diffusion technique. Here, we develop low-cost and easily accessible channels based on natural wood and present a pathway to utilize the wood membrane for local electrochemistry applications. However, its application is largely hindered by complex routes and high expense for fabrication. The artificial solid-state nanopore/nanochannel based electrochemical sensing technique has demonstrated great advantages such as high sensitivity and minimalized equipment.
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