Fig. 3
From: Carbon quantum dots of ginsenoside Rb1 for application in a mouse model of intracerebral Hemorrhage
Effective clearance of oxygen free radicals and iron ions by RBCQDs. (a) FT-IR spectra of ethylenediamine (blue), ginsenoside Rb1 (black), and RBCQDs (red). XPS spectra of RBCQDs, including C1s (b), O1s (c), and N1s (d) exemplary spectra. The clearance rates of ABTS (e) and DPPH (f) radicals by RBCQDs and ginsenoside Rb1 at various concentrations (n = 6/group, two-way ANOVA). (g) Appearance before and after RBCQDs, Fe3+, and RBCQDs + Fe3+ centrifugation. (h) Appearance before and after centrifugation of RBCQDs, Fe2+, and RBCQDs + Fe2+. (i) Fluorescence intensity of RBCQDs after incubation with 0, 0.05, 0.15, 0.25, 0.5, and 1 mM Fe2+. (j) Fluorescence intensity of RBCQDs after incubation with 0, 0.05, 0.15, 0.25, 0.5, and 1 mM Fe3+. (k) UV absorption spectra of RBCQDs at different concentrations after incubation with Fe2+ for 12 h. (l) UV absorption spectra of RBCQDs at different concentrations after incubation with Fe3+ for 12 h