Electron localization in rod-shaped triicosahedral gold nanocluster.

ABSTRACT: Atomically precise gold nanocluster based on linear assembly of repeating icosahedrons (clusters of clusters) is a unique type of linear nanostructure, which exhibits strong near-infrared absorption as their free electrons are confined in a one-dimensional quantum box. Little is known about the carrier dynamics in these nanoclusters, which limit their energy-related applications. Here, we reported the observation of exciton localization in triicosahedral Au₃₇ nanoclusters (0.5 nm in diameter and 1.6 nm in length) by measuring femtosecond and nanosecond carrier dynamics. Upon photoexcitation to S₁ electronic state, electrons in Au₃₇ undergo ∼100-ps localization from the two vertexes of three icosahedrons to one vertex, forming a long-lived S₁* sta

SUBMITTER: Zhou M 

PROVIDER: S-EPMC5474815 | biostudies-literature | 2017 Jun

REPOSITORIES: biostudies-literature