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Fig. 6 | Journal of Nanobiotechnology

Fig. 6

From: Fabrication of avidin-stabilized gold nanoclusters with dual emissions and their application in biosensing

Fig. 6

Av–Au NCs for sensing of target DNA. A The fluorescence intensity curves of the feasibility experience. Curve a, b, c and d represent addition of Av–Au NCs-50 T, Av–Au NCs-25 T, Av–Au NCs and PBS, respectively. The concentration of the target DNA was 20 nM. Slit widths of excitation: 10 nm, slit widths of emission: 10 nm, and voltage: 700 V. B Calibration plots of the fluorescence signals vs. the logarithm of target DNA concentrations from 0.2 nM to 2 × 104 nM. Error bar represents the standard deviation (n = 3). C Fluorescence response signals for the specificity of target DNA (20 nM) detection against blank, SM (20 nM), DM (20 nM), and NC (20 nM). Error bar represents the standard deviation (n = 3).

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