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A novel sensing platform based on periodate-oxidized chitosan

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A novel sensing platform based on periodate-oxidized chitosan

Content Provider	Royal Society of Chemistry (RSC)
Author	Feng, Yan Yang, Limin Li, Feng
Copyright Year	2010
Abstract	A novel thionine (TH) sensing platform was proposed based on immobilization of TH on a periodate-oxidized chitosan (CS) modified glassy carbon electrode (GCE) surface. Oxidation of CS by periodate can lead to the cleavage of carbon–carbon bonds on the pyranosidic ring of CS, with the generation of dialdehyde groups. TH, an electroactive mediator, was selected as a model of amine compounds to react with the aldehyde group via Schiff-base reaction. Due to the resulting aldehyde-enriched surface and covalent immobilization of TH on periodate-oxidized CS, the CS-grafted-TH showed a pronounced electrochemical response with high stability. The application of the fabricated TH sensing platform as a hydrogen peroxide (H2O2) sensor was also investigated and it exhibited a rapid response to H2O2 within 4 s. The linear calibration ranged from 1.0 × 10−5 to 1.83 × 10−3 M with a detection limit of 4.0 × 10−6 M.
Starting Page	2011
Ending Page	2016
Page Count	6
File Format	HTM / HTML PDF
ISSN	17599660
Volume Number	2
Issue Number	12
Journal	Analytical Methods
DOI	10.1039/c0ay00499e
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	CS Electrode Hydrogen peroxide Peroxide Periodate Covalent bond Electrochemistry Chitosan Aldehyde Carbon
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry Engineering Chemical Engineering

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