Figure 4.

Interaction of p-A₄B₄ with SDS. (a) ¹H NMR spectra for the titration of SDS (1 mM) with cage p-A₄B₄ (from 0 to 0.04 equivalents) in D₂O, where the complete disappearance of the surfactant signal is observed. (b) Linear fit for the titration, where the equivalents of p-A₄B₄ are represented vs the surfactant’s methyl group integral. (c) Photo of the NMR tubes showing the precipitate formed after the addition of 0.04 equiv of p-A₄B₄ to the solution of SDS (1 mM).