Precise Blood Glucose Sensing by Nitrogen-Doped Graphene Quantum Dots for Tight Control of Diabetes

Figure 4

(a) Normalized UV-Vis’s absorption (sprint) and PL (solid) spectra of E-GQDs. Inset: the photographs of E-GQDs within the watery course of action underneath unmistakable (cleared out) and UV (right) lights. (b) Fluorescent picture of unrefined 264.7 cells brought forth with 80 μg/mL N-GQDs. (c) The dark-field microscopic image comparing to (b). (d) Overlay of (b) and (c) [42, 44].

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