Figure 7. Mass density profiles along z axis of the simulated box with different DESs at different concentrations. (a), (b), and (c) ChCl-Pho (1:2) at 1.0 wt%, 3.0 wt%, and 5.0 wt%, respectively. (d), (e), and (f) ChCl-TsOH (1:1) at 1.0 wt%, 3.0 wt%, and 5.0 wt%, respectively.