Effects of bromine-containing counterion salts in directing the structures of medium-sized silver nanoclusters

Abstract

The effect of bromine-containing salts in directing the structures of silver nanoclusters was investigated, and three clusters with medium-sized metallic kernels, Ag52, Ag54, and Ag58, were controllably synthesized and structurally determined.

Recent advances in synthesis and properties of silver nanoclusters

“…The Kang group obtained three medium-sized Ag NCs, namely Ag 52 , Ag 54 , and Ag 58 , co-protected by thiolate, halide, and hydride ligands. 44 The Ag 52 and Ag 54 NCs are synthesized in the presence of tetraphenylphosphonium, whereas the Ag 58 NC is produced in the presence of tetraoctylammonium counterion. The Ag 52 and Ag 54 NCs are structurally homologous with respect to the kernel structures and the overall metal-atom configurations, while the Ag 58 NC has a completely different geometric structure.…”

Polyoxometalate-mediated syntheses of three structurally new silver clusters

“…nanoclusters have attracted increasing attention from the scientific community due to their novel aesthetic structures, unique physicochemical properties and widespread application, 1–6 including their promising applications in various fields like catalysis, photochromism, chirality, biomedicine, and chemical sensing, etc . 7–14 The synthesis of Ag clusters is inextricably linked to the involvement of surface-protecting organic ligands, mainly thiolate, 15–19 phosphine, 20–22 alkynyl, 23–25 and amide ligands 26 or appropriate combination of these ligands, 27 which can offer more possibilities for the structure and properties of Ag clusters. In addition to the adjustable ligand type, the introduction of structure-directing agents like anionic templates has also largely contributed to the construction of high-nuclearity Ag clusters, and the anion-template synthetic strategy has become a popular route for making novel Ag clusters.…”