where l pec B = e 2 /4πε 0 ε r k B T = 0.89 nm is the Bjerrum length of the implicit solvent, which is represented as a dielectric continuum. This corresponds to the relative permittivity of the polyelectrolyte complex phase ε r ≈ 62. The electrostatic potential and forces are evaluated using the particle-particle particle-mesh (PPPM) method, 116