Figure 4.

(A) Spectra of PTh/GOx composite nanoparticles colloidal solutions formed at various solution pH values and (B) dependence of optical absorbance at λ_max = 450 nm on the solution pH. (The composition of polymerization solution: 0.05 mol L⁻¹ of glucose, 0.50 mol L⁻¹ of thiophene, and 0.75 mg mL⁻¹ of glucose oxidase at pH 1.0–12; 48 h lasting polymerization was performed. Optical absorbance was registered in 0.05 mol L⁻¹ SA buffer, pH 6.0).