Figure 6

(a) UV–vis absorption, fluorescence excitation and emission spectra of FN-CDs and (b) Z-FN-CDs; (c) excitation-dependent emission fluorescence spectral behavior of FN-CDs and (d) Z-FN-CDs.
(a) UV–vis absorption, fluorescence excitation and emission spectra of FN-CDs and (b) Z-FN-CDs; (c) excitation-dependent emission fluorescence spectral behavior of FN-CDs and (d) Z-FN-CDs.