Coherent vibrational dynamics of Au₁₄₄(SR)₆₀ nanoclusters.

ABSTRACT: The coherent vibrational dynamics of gold nanoclusters (NCs) provides important information on the coupling between vibrations and electrons as well as their mechanical properties, which is critical for understanding the evolution from a metallic state to a molecular state with diminishing size. Coherent vibrations have been widely explored in small-sized atomically precise gold NCs, while it remains a challenge to observe them in large-sized gold NCs. In this work, we report the coherent vibrational dynamics of atomically precise Au₁₄₄(SR)₆₀ NCs via temperature-dependent femtosecond transient absorption (TA) spectroscopy. The population dynamics of Au₁₄₄(SR)₆₀ consists of three relaxation processes: internal conversion, core-shell charge

SUBMITTER: Zhang W 

PROVIDER: S-EPMC9278113 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature