Figure 4.

Influence of the length of head groups on EDL properties: (a) electrostatic potential profiles Ψ, (b) probability densities of rigid rod-like head groups W, and (c) the schematic representation of the most probable conformation of the rigid rod-like head groups. The lengths of head group segments are l₁ = l₂ = 0.5 nm (red lines) and l₁ = l₂ = 1 nm (green lines). Calculations are made for c = 0.1 mol dm^–3 1:1 electrolyte concentration, a = 0.6 nm², and β = 0.5.