At the free energy minimum, the energetic repulsion due to DS --water desolvation ultimately overpowers the energetic attraction due to DS -C 12 E 6 -resolvation, leading to E DS -,W ⊕C (z) of around +10 k B T . The -T S DS -,W ⊕C (z) contribution more than compensates, as a result of a less-structured C 12 E 6 and interfacial water around DS -at the interface compared to the morestructured water around DS -in the bulk.