“…In the case of Cu alloying, the Cu atoms tend to position themselves in the shell layer of the core–shell NCs. 30–35 Zhu et al reported bimetallic NCs, Au 36− x Cu x ( m -MBT) 24 ( x = 1–3), 30 Au 38− x Cu x (2,4-DMBT) 24 ( x = 0–6, DMBT = 2,4-dimethylbenzenethiolate), 31 and [Ag 62− x Cu x S 12 (SBu t ) 32 ] 4+ ( x = 10–21). 32 Liu et al reported bimetallic Cu x Ag 20− x {S 2 P(OR) 2 } 12 ( x = 3, 4; R = i Pr, 19 n Pr 33 ).…”