DNA Modified with Metal Nanoparticles: Preparation and Characterization of Ordered Metal-DNA Nanostructures in a Solution and on a Substrate

Figure 4

Optical density of solutions (a): DNA in 5 mM NaNO₃ (1), DNA with Ag-NPs-2 (2) and Ag-NPs-2 (3), and (Ag-NPs-2) = 25 μg/mL; CD spectra (b) of DNA in 5 mM NaNO₃ (1), DNA with Ag-NPs-2 (2–4), and (Ag-NPs-2) = 7.5 (2), 10 (3), and 15 (4) μg/mL; the dependence of the relative change in the reduced viscosity of DNA solutions (c) on concentrations of Ag-NPs-1 (1) and Ag-NPs-2 (2), -reduced viscosity of DNA solution without Ag-NPs-2. (DNA) = 0.005%.

(a)

(b)

(c)