Two triplet emitting states in one emitter: Near-infrared dual-phosphorescent Au₂₀ nanocluster.

ABSTRACT: Intrinsic dual-emission (DE) of gold nanoclusters in the near-infrared (NIR) are fascinating for fundamental importance and practical applications, but their synthesis remains a formidable challenge and sophisticated excited-state processes make elucidating DE mechanisms much more arduous. Here, we report an all-alkynyl-protected gold nanocluster, Au20, showing a prolate Au₁₂ tri-octahedral kernel surrounded by two Au₂(CZ-PrA)₃ dimers, four Au(CZ-PrA)₂ monomers, and two CZ-PrA^- bridges. Au20 exhibits distinguished photophysical properties including NIR DE at 820 and 940 nm, microsecond radiative relaxation, and 6.26% photoluminescent quantum yield at ambient environment in nondegassed solution. Combining systematic studie

SUBMITTER: Si WD 

PROVIDER: S-EPMC10058230 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature