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Issue 18, 2013
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Carbon dots and chitosan composite film based biosensor for the sensitive and selective determination of dopamine

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Abstract

A simple, sensitive and reliable dopamine (DA) biosensor was developed based on a carbon dots (CDs) and chitosan (CS) composite film modified glassy carbon electrode (CDs–CS/GCE). Under optimal conditions, the CDs–CS/GCE showed a better electrochemical response for the detection of DA than that of the glassy carbon electrode (GCE). The oxidation peak current (Ipa) of DA was linear with the concentration of DA in the range from 0.1 μM to 30.0 μM with the limit of detection as 11.2 nM (3S/N). The CDs–CS/GCE was applied to the detection of DA content in an injection solution of DA with satisfactory results.

Graphical abstract: Carbon dots and chitosan composite film based biosensor for the sensitive and selective determination of dopamine

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Publication details

The article was received on 14 Mar 2013, accepted on 23 May 2013 and first published on 23 May 2013


Article type: Paper
DOI: 10.1039/C3AN00510K
Analyst, 2013,138, 5417-5423

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    Carbon dots and chitosan composite film based biosensor for the sensitive and selective determination of dopamine

    Q. Huang, S. Hu, H. Zhang, J. Chen, Y. He, F. Li, W. Weng, J. Ni, X. Bao and Y. Lin, Analyst, 2013, 138, 5417
    DOI: 10.1039/C3AN00510K

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