Jump to main content
Jump to site search

Issue 34, 2016, Issue in Progress
Previous Article Next Article

Facile synthesis of copper doped carbon dots and their application as a “turn-off” fluorescent probe in the detection of Fe3+ ions

Author affiliations

Abstract

Heteroatom doped carbon dots, due to their excellent fluorescent properties and related applications, have attracted great attention from different fields. Herein, we reported for the first time a facile and economic approach to synthesize copper doped carbon dots (Cu-CDs) via a one-step hydrothermal approach. The chemical and fluorescent properties of these Cu-CDs as well as the mechanism involved for the enhancement of the fluorescent were investigated through various microscopic and spectroscopic analyses, such as transmission electron microscopy (TEM), fluorescence spectra, X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR). It is observed that the Cu-CDs with the average size of 3.76 nm are spherical and monodisperse. Additionally, the as-prepared Cu-CDs exhibited a strong emission at 440 nm when excited at 350 nm (λex) and the photoluminescence quantum yields (PLQY) reached 9.81% after the optimization of synthesis conditions. The excellent fluorescent properties of Cu-CDs make them great candidates for the selective and fast detection of Fe3+ in range of 0.001–200 μM, while the limit of detection (LOD) is 1 nM, which can be further applied to detect Fe3+ in human blood serum and other biomedical applications.

Graphical abstract: Facile synthesis of copper doped carbon dots and their application as a “turn-off” fluorescent probe in the detection of Fe3+ ions

Back to tab navigation

Supplementary files

Publication details

The article was received on 24 Dec 2015, accepted on 10 Mar 2016 and first published on 15 Mar 2016


Article type: Paper
DOI: 10.1039/C5RA27658F
RSC Adv., 2016,6, 28745-28750

  •   Request permissions

    Facile synthesis of copper doped carbon dots and their application as a “turn-off” fluorescent probe in the detection of Fe3+ ions

    Q. Xu, J. Wei, J. Wang, Y. Liu, N. Li, Y. Chen, C. Gao, W. Zhang and T. S. Sreeprased, RSC Adv., 2016, 6, 28745
    DOI: 10.1039/C5RA27658F

Search articles by author

Spotlight

Advertisements