Interplay of kernel shape and surface structure for NIR luminescence in atomically precise gold nanorods.

ABSTRACT: It is challenging to attain strong near-infrared (NIR) emissive gold nanoclusters. Here we show a rod-shaped cluster with the composition of [Au₂₈(p-MBT)₁₄(Hdppa)₃](SO₃CF₃)₂ (1 for short, Hdppa is N,N-bis(diphenylphosphino)amine, p-MBT is 4-methylbenzenethiolate) has been synthesized. Single crystal X-ray structural analysis reveals that it has a rod-like face-centered cubic (fcc) Au₂₂ kernel built from two interpenetrating bicapped cuboctahedral Au₁₅ units. 1 features NIR luminescence with an emission maximum at 920 nm, and the photoluminescence quantum yield (PLQY) is 12%, which is 30-fold of [Au₂₁(m-MBT)₁₂(Hdppa)₂]SO₃CF₃ (2, m-MBT is 3-methylbenz

SUBMITTER: Wan XK 

PROVIDER: S-EPMC11341786 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature