Cocrystallization of Two Negatively Charged Dimercaptomaleonitrile-Stabilized Silver Nanoclusters.

Studies on the assembly of atomically precise metal nanoclusters (NCs) are of great significance in the nanomaterial field, which has attracted increasing interest in the last few decades. Herein, we report the cocrystallization of two negatively charged atom-precise silver nanoclusters, the octahedral [Ag(MNT)(TPP)] () and the truncated-tetrahedral [Ag(MNT)(TPP)] () in a 1:2 ratio (MNT = dimercaptomaleonitrile, TPP = triphenylphosphine). As far as we know, a cocrystal containing two negatively charged NCs has seldom been reported.

Stepwise structure evolution from 2D cluster-based frameworks to silver(I) clusters.

A pair of 2D chiral frameworks, R-Ag5-1 and S-Ag5-1, with orange fluorescence were successfully synthesized. They were transformed to a thermodynamically favored denser stacking, R-Ag5-3 and S-Ag5-3, accompanied by a change in the luminescence and activating the CPL signal. The capture and structural determination of the intermediates (R-Ag5-2 and S-Ag5-2) reveal that the coordination instability of Na ions is the main cause of this transition.

Atomically Precise Enantiopure Bimetallic Janus Clusters.

Asymmetric bimetallic Janus nanocrystals with a side-by-side interface have unique properties and important applications. However, understanding their fundamental issues, including their formation mechanism, interfacial linkage, and related properties, remains challenging, as does the preparation of enantiopure samples. Atomically precise Janus bimetal nanoclusters would unequivocally resolve these issues, yet they have not been realized.