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Issue 12, 2012
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Inkjet-printed graphene-PEDOT:PSS modified screen printed carbon electrode for biochemical sensing

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Abstract

In this work, a novel method for electrode modification based on inkjet-printing of electrochemically synthesized graphene-PEDOT:PSS (GP-PEDOT:PSS) nanocomposite is reported for the first time. GP-PEDOT:PSS dispersed solution is prepared for use as an ink by one-step electrolytic exfoliation from a graphite electrode. GP-PEDOT:PSS layers are then printed on screen printed carbon electrodes (SPCEs) by a commercial inkjet material printer (Dimatrix Inc.) and their electrochemical behaviors towards three common electroactive analytes, including hydrogen peroxide (H2O2), nicotinamide adenine dinucleotide (NAD+/NADH) and ferri/ferro cyanide (Fe(CN)63−/4−) redox couples, are characterized. It is found that the oxidation signals for H2O2, NADH and K2Fe(CN)6 of PEDOT:PSS modified and GP-PEDOT:PSS modified SPCEs are ∼2–4 and ∼3–13 times higher than those of unmodified SPCE, respectively. In addition, excellent analytical features with relatively wide dynamic ranges, high sensitivities and low detection limits have been achieved. Therefore, the inkjet-printed GP-PEDOT:PSS electrode is a promising candidate for advanced electrochemical sensing applications.

Graphical abstract: Inkjet-printed graphene-PEDOT:PSS modified screen printed carbon electrode for biochemical sensing

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Publication details

The article was received on 17 Aug 2011, accepted on 11 Jan 2012 and first published on 08 Feb 2012


Article type: Paper
DOI: 10.1039/C2JM14005E
Citation: J. Mater. Chem., 2012,22, 5478-5485
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    Inkjet-printed graphene-PEDOT:PSS modified screen printed carbon electrode for biochemical sensing

    C. Sriprachuabwong, C. Karuwan, A. Wisitsorrat, D. Phokharatkul, T. Lomas, P. Sritongkham and A. Tuantranont, J. Mater. Chem., 2012, 22, 5478
    DOI: 10.1039/C2JM14005E

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