Materials. All chemicals were purchased from Sigma-Aldrich and used as received. Deionised water was used throughout. 2NapFF was synthesised as previously described (see Supporting Information). To produce solutions of 2NapFF, a predetermined mass of 2NapFF, 1 molar equivalent of a hydroxide (using a 0.1 M or 1 M solution of either sodium or tetrabutylammonium hydroxide) with respect to 2NapFF and deionised water were mixed to make up the final volume. Solutions were prepared in 7 mL Sterilin vials and stirred overnight at 1000 rpm with a 13 x 3 mm stirrer bar since deviating from these parameters can cause variations within the sample (see Supporting Information for full preparation discussion).