Research Article
A Facile Synthesis of Highly Nitrogen-Doped Carbon Dots for Imaging and Detection in Biological Samples
Figure 4
(a) UV-Vis absorption spectrum (black line), fluorescence excitation (red line, λem = 438 nm), and emission spectra (blue line, λex = 377 nm) of N-doped CDs. The insets show the photograph (left) and fluorescence image of N-doped CD solution under 365 nm UV light (right). (b) Fluorescence emission spectra of the N-doped CDs. (c) The fluorescence decay curve of N-doped CDs. (d) Fluorescence stability of N-doped CDs.
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