关键字：endence between nanoclusters AuAg24 and Au2Ag41
摘要：Whole series of nanoparticles have now been reported, but probing the competing or coexisting effects in their synthesis and growth remains challenging. Here, we report a bi-nanocluster system comprising two ultra-small, atomically precise nanoclusters, AuAg24(SR)(18)(-) and Au2Ag41(SR)(26)(Dppm)(2)(+) (SR=cyclohexyl mercaptan, Dppm = bis(diphenylphosphino)-methane). The mechanism by which these two nanoclusters coexist is elucidated, and found to entail formation of the unstable AuAg24(SR)(18)(-), followed by its partial conversion to Au2Ag41(SR)(26)(Dppm)(2)(+) in the presence of di-phosphorus ligands, and an interdependent bi-nanocluster system is established, wherein the two oppositely charged nanoclusters protect each other from decomposition. AuAg24(SR)(18) and Au2Ag41(SR)(26)(Dppm)(2) are fully characterized by single crystal X-ray diffraction (SC-XRD) analysis - it is found that their co-crystallization results in single crystals comprising equimolar amounts of each. The findings highlight the interdependent relationship between two individual nanoclusters, which paves the way for new perspectives on nanocluster formation and stability. Despite recent progress in individual nanocluster synthesis, understanding the competing or coexisting effects between particles in solution remains challenging. Here, the authors present the synthesis of a bi-nanocluster system comprising two atomically precise nanoclusters, and map out the interdependent relationship between them.
卷号：12
期号：1
是否译文：否