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Characterization of Carbon Dots Covered with Polyvinylpyrrolidone and Polyethylene Glycol

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Figure

Figure 1. (A)  Absorption spectra (230 – 800 nm) and (B) dependence of emission maxima on excitation wavelength of (a) C-dot-PVP and (b) C-dots-PEG
Figure 2. (A)  Cyclic voltammogram of equimolar 4 mM K3[Fe(CN6)]3-/K4[Fe(CN6)]4- solution in 0.1 M KCl obtained by (a) GCE, (b) GCE modified with C-dots-PVP and (c) C-dots-PEG
Figure 3. The voltammograms and the dependence of current levels at potentials -0.57 V (blue), -0.65 V (green) and -0.79 V (red) of (A, B) 1% PVP, (C, D) C-dots-PVP, (E, F) 1% PEG and (G, H) C-dots-PEG added to electrochemical cell in precise volume

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