Figure 3.

(A) The spectra of formed Ppy/GOx composite nanoparticles colloidal solution at various solution pH values and (B) dependence of optical absorbance at λ_max = 460 nm on the solution pH. (The composition of polymerization solution: 0.05 mol L⁻¹ of glucose, 0.50 mol L⁻¹ of pyrrole, and 0.75 mg mL⁻¹ of glucose oxidase at pH 2.0–12; 48 h lasting polymerization was performed. Optical absorbance was registered in 0.05 mol L⁻¹ SA buffer, pH 6.0).