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Issue 1, 2015
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Facile synthesis of oxygen and sulfur co-doped graphitic carbon nitride fluorescent quantum dots and their application for mercury(II) detection and bioimaging

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Abstract

In this work, uniform oxygen and sulfur co-doped graphitic carbon nitride quantum dots (OS-GCNQDs) have been prepared by thermal treatment of citric acid and thiourea. The as-obtained OS-GCNQDs show strong blue photoluminescence (PL) with a relatively high quantum yield of 14.5%. Furthermore, OS-GCNQDs exhibit stable and specific concentration-dependent PL intensities in the presence of mercury(II) ions in the range of 0.001–20.0 μM, with a detection limit of 0.37 nM (3S/N). More importantly, OS-GCNQDs were explored for cell imaging with satisfactory biocompatibility, and so are a potential fluorescent probe in biosensing and bioimaging applications.

Graphical abstract: Facile synthesis of oxygen and sulfur co-doped graphitic carbon nitride fluorescent quantum dots and their application for mercury(ii) detection and bioimaging

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Publication details

The article was received on 19 Sep 2014, accepted on 28 Oct 2014 and first published on 28 Oct 2014


Article type: Paper
DOI: 10.1039/C4TC02111H
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J. Mater. Chem. C, 2015,3, 73-78

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    Facile synthesis of oxygen and sulfur co-doped graphitic carbon nitride fluorescent quantum dots and their application for mercury(II) detection and bioimaging

    Y. Lu, J. Chen, A. Wang, N. Bao, J. Feng, W. Wang and L. Shao, J. Mater. Chem. C, 2015, 3, 73
    DOI: 10.1039/C4TC02111H

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