Fig. 3: Monitoring of reaction intermediates.
From: Control of single-ligand chemistry on thiolated Au25 nanoclusters

a UV-Vis absorption and b ESI-MS spectra of [Au25MHA18] species after PAGE purification and long-time exposure in air. Detailed analysis of the enlarged parts in red and blue square is shown in c and d, respectively. Both experimental and simulated isotopic patterns of labeled species are included.