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Issue 15, 2017
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Fluorescence detection of dopamine based on nitrogen-doped graphene quantum dots and visible paper-based test strips

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Abstract

Dopamine (DA) was sensitively detected using a label-free fluorescence method using nitrogen-doped graphene quantum dots (N-GQDs) as effective probes. The detection of DA was also performed on the N-GQD immersed filter paper. The fluorescence intensity of the N-GQDs was effectively quenched upon addition of DA. There was a good linear relationship between the fluorescence intensity of the N-GQDs and the DA concentration in the range of 1–200 μM, with a detection limit of 0.07 μM. The proposed method was facile, sensitive, and fast for DA detection with simple operation. DA in real serum samples was successfully detected with satisfactory results. Significantly, this fluorescent probe was used to fabricate paper-based test strips for visual detection of DA for the first time, which validated the potential on-site application.

Graphical abstract: Fluorescence detection of dopamine based on nitrogen-doped graphene quantum dots and visible paper-based test strips

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Publication details

The article was received on 04 Jan 2017, accepted on 18 Mar 2017 and first published on 20 Mar 2017


Article type: Paper
DOI: 10.1039/C7AY00028F
Citation: Anal. Methods, 2017,9, 2246-2251
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    Fluorescence detection of dopamine based on nitrogen-doped graphene quantum dots and visible paper-based test strips

    X. Chen, N. zheng, S. Chen and Q. Ma, Anal. Methods, 2017, 9, 2246
    DOI: 10.1039/C7AY00028F

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