Isomeric Effects of Au₂₈(S-c-C₆H₁₁)₂₀ Nanoclusters on Photoluminescence: Roles of Electron-Vibration Coupling and Higher Triplet State.

ABSTRACT: The exploration of near-infrared photoluminescence (PL) from atomically precise nanoclusters is currently a prominent area of interest owing to its importance in both fundamental research and diverse applications. In this work, we investigate the near-infrared (NIR) photoluminescence mechanisms of two structural isomers of atomically precise gold nanoclusters of 28 atoms protected by cyclohexanethiolate (CHT) ligands, i.e., Au_28i(CHT)₂₀ and Au_28ii(CHT)₂₀. Based on their structures, analysis of ³O₂ (triplet oxygen) quenching of the nanocluster triplet states, temperature-dependent photophysical studies, and theoretical calculations, we have elucidated the intricate processes governing the photoluminescence of these isomeric n

SUBMITTER: Mazumder A 

PROVIDER: S-EPMC11328167 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature