Fig. 6: 1H-NMR testing of the ligand shell.
From: Control of single-ligand chemistry on thiolated Au25 nanoclusters
1H-NMR spectra of MHA ligand, [Au25MHA18]−, and [Au25MHA19]0. Sharp peaks around chemical shift of 3.30 and 2.40 ppm are from impurities introduced in PAGE and ultrafiltration process which are hard to be removed and assigned.
