Fig. 4: Precise control of ligand exchange extent using the interphase-assisted approach.
From: Atomically precise ligand engineering of gold nanoparticles via interphase mass transfer

Comparison of ligand distribution on the surface of Au25 NCs after ligand exchange in a water-only single-phase and b interphase-assisted systems with varying p-MBA: Au25(p-MBSA)18 ratios. The bottom chart displays the molecular formulas of Au25(p-MBSA)18-n(p-MBA)n obtained from the interphase-assisted and water-only single-phase ligand exchange reactions at low p-MBA: Au25(p-MBSA)18 ratios ( < 9). The concentration of Au25(p-MBSA)18 and aqueous pH used in both systems are 0.025 mM and 7, respectively.