Figure 1.

a) Coarse‐grained mapping of DDAB molecule; details about the bead type of Q 0, Q a , C 2, and C 1 can be found in Computational Section; b) snapshots and slices of 50, 60, and 70 wt% DDAB/water binary systems, water and bromine ions (Br−) are visually hidden for clarity; c) radial distribution functions between headgroups of DDAB.