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Synthesis of multi-function green fluorescence carbon dots and its application as fluorescence probe for Hg2+ detection and zebrafish imaging

Abstract

Heteroatom doped carbon dots, due to their excellent fluorescent properties and potential applications in biological and photo-electronic industry, have attracted great attention recently. In this work, we reported a single-step synthesis of nitrogen carbon dots (N-CDs) using a simple and straightforward hydrothermal method. The luminescence properties of the synthesized N-CDs were correlated to the precursor ratio (aniline and ethylenediamine ratio of 1: 5) in CDs. To further investigate fluorescent properties and related mechanisms of N-CDs, different characterization techniques were applied, including fluorescence spectroscopy, X-ray diffraction(XRD), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS). In addition, the as-prepared N-CDs exhibit strong emission at 510 nm when excited at 410 nm, light which emits bright green fluorescence at 365 nm UV radiation. N-CDs exhibited a strong selectivity for Hg2+ in the range of 0-70 μM, which can be used for the rapid detection of Hg2+ in biomedical applications. The sample of N-CDs as probe were dedicated to fluorescence bioimaging of zebrafish, validating the potential of N-CDs as probe in bioimaging applications.

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Publication details

The article was received on 05 Apr 2018, accepted on 30 Apr 2018 and first published on 09 May 2018


Article type: Paper
DOI: 10.1039/C8NJ01639A
Citation: New J. Chem., 2018, Accepted Manuscript
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    Synthesis of multi-function green fluorescence carbon dots and its application as fluorescence probe for Hg2+ detection and zebrafish imaging

    Q. Xu, M. Zhang, Y. Liu, W. Cai, W. Yang , Z. He, X. Sun, Y. Luo and F. Liu, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C8NJ01639A

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