Electrochemical exfoliation of carbon dots with the narrowest full width at half maximum in their fluorescence spectra in the ultraviolet region using only water as electrolyte

Here, a novel kind of CDs were electrochemically exfoliated from graphite rods using distilled water as the only electrolyte. The as-exfoliated CDs showed two significant features: the narrowest fluorescence spectra with a FWHM of only 10 nm and ultraviolet fluorescence spectra in the region up to 360 nm.