Fig. 5
From: Precise control of alloying sites of bimetallic nanoclusters via surface motif exchange reaction
Ag@Au nanoclusters produced with different Au(I)–SR complexes. Electrospray ionization mass spectra of [Ag44-x Au x (SR)30]4− nanoclusters (SR denotes thiolate ligand) synthesized by using a–c Au(I)–(p-MBA) complexes (p-MBA = para-mercaptobenzoic acid) and d–f Au(I)–(p-NTP) complexes (p-NTP = para-nitrothiophenol): a, d mass spectra in a broad m/z range of 1000–5000; b, e zoom-in mass spectra in m/z = 2200–2800; and c, f isotope patterns of [Ag34Au10(SR)30]4−. The dotted drop lines in b, e indicate the number of Au heteroatoms in each cluster. The magenta line in f is the simulated isotope pattern of [Ag34Au10(p-MBA)10(p-NTP)20]4−
