Effect of the length of the cation substituent on the scale of structural heterogeneity in ionic liquids with low-molecular additions

The structural properties of ionic liquid-low-molecular substance binary mixtures were studied using the integral equation theory. Main attention was paid to the dependence of the characteristic scale of the structural inhomogeneities of a mixture on the length of the cation tail at different concentrations of the low-molecular addition. The typical morphology of pure ionic liquid is preserved in a mixture, the low-molecular admixture leading to a set of the characteristic scales of ordering of the mixture components in the nanometer range.