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Issue 6, 2011
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Enzyme free glucose sensor exploiting a poly (dimethylaniline) grafted sulfonated ionomer-copper nanocomposite

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Abstract

A new enzyme free glucose biosensor was fabricated based on poly(N,N′-dimethylaniline), sulfonated poly(ether ether ketone) and Cu(0) nanoparticles. The morphology and structure of the nanocomposites were characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM) and was observed to be like nanoflowers. Amperometric and cyclic voltammetric methods were used to evaluate the performance of the sensor towards glucose. This enzyme free sensor showed synergistic electrocatalytic activity for glucose oxidation in 0.1 M KOH. The developed sensor displays linear range (0.5–5 mM) and sensitivity (19.3 μA mM−1) with 0.1 μM (S/N = 3) detection limit. Also, modified GCE exhibited high reproducibility, long-term stability, good mechanical and chemical stabilities. Interferences of uric acid (UA) and ascorbic acid (AA) were completely avoided. Good analytical performance, low cost and straightforward preparation methodology suggested electrode as a promising material for effective glucose sensors.

Graphical abstract: Enzyme free glucose sensor exploiting a poly (dimethylaniline) grafted sulfonated ionomer-copper nanocomposite

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Supplementary files

Article information


Submitted
28 Feb 2011
Accepted
05 Apr 2011
First published
18 May 2011

Anal. Methods, 2011,3, 1331-1337
Article type
Paper

Enzyme free glucose sensor exploiting a poly (dimethylaniline) grafted sulfonated ionomer-copper nanocomposite

S. Prakash and V. K. Shahi, Anal. Methods, 2011, 3, 1331
DOI: 10.1039/C1AY05112A

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