(a) Plot of the relative Helmholtz free
energies (ΔA), internal energy (ΔU) of the water–water
or water–C11R6 interactions, and entropy (ΔS) for the incorporation of water molecules beyond 8 determined by
the GIST method.80 (b) Renderings depicting
the structures of C11R6-A and C11R6-B containing 8 and
14 water molecules, respectively. Renderings feature highlights indicating
structural (red) and incorporated (blue) water, which differentiate C11R6-A and C11R6-B, respectively.
Note that structural water highlights for C11R6-B are omitted
for clarity. Similarly, alkyl pendant groups, solvent, and nonhydroxy
hydrogen atoms are omitted from both renderings for clarity. Both
thermodynamic calculations (a) and model visualizations (b) were generated
from 28 800 ns MD trajectories.