Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 24, 2011
Previous Article Next Article

Selective and sensitive determination of dopamine by composites of polypyrrole and graphene modified electrodes

Author affiliations

Abstract

A novel method is developed to fabricate the polypyrrole (PPy) and graphene thin films on electrodes by electrochemical polymerization of pyrrole with graphene oxide (GO) as a dopant, followed by electrochemical reduction of GO in the composite film. The composite of PPy and electrochemically reduced graphene oxide (eRGO)-modified electrode is highly sensitive and selective toward the detection of dopamine (DA) in the presence of high concentrations of ascorbic acid (AA) and uric acid (UA). The sensing performance of the PPy/eRGO-modified electrode is investigated by differential pulse voltammetry (DPV), revealing a linear range of 0.1–150 μM with a detection limit of 23 nM (S/N = 3). The practical application of the PPy/eRGO-modified electrode is successfully demonstrated for DA determination in human blood serum.

Graphical abstract: Selective and sensitive determination of dopamine by composites of polypyrrole and graphene modified electrodes

Back to tab navigation

Supplementary files

Article information


Submitted
24 Aug 2011
Accepted
22 Sep 2011
First published
19 Oct 2011

Analyst, 2011,136, 5134-5138
Article type
Communication

Selective and sensitive determination of dopamine by composites of polypyrrole and graphene modified electrodes

P. Si, H. Chen, P. Kannan and D. Kim, Analyst, 2011, 136, 5134
DOI: 10.1039/C1AN15772H

Social activity

Search articles by author

Spotlight

Advertisements