Triggering Photoluminescence in High-Nuclear Silver Nanoclusters via Extra Silver Atom Incorporation.

ABSTRACT: Photoluminescence (PL) in silver (Ag) nanoclusters (NCs) is intrinsically linked to their structural architecture, yet their low quantum yield at room-temperature hinders practical applications. Although various strategies have been explored to enhance the PL efficiency of Ag NCs, their effectiveness in high-nuclear Ag NCs remains largely uncertain. Here, we demonstrate a 77-fold enhancement in room-temperature PL quantum yield by modulating both radiative and nonradiative decay pathways in high-nuclear Ag NCs. A comparative study of two anion-templated Ag NCs, differing by a single Ag atom in the outermost shell, reveals that this substitution lowers structural symmetry, thereby increasing the radiative decay rate. This structural modification is facilitated by the alterations in ligands

SUBMITTER: Akiyama A 

PROVIDER: S-EPMC12532279 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature