Direct Observation of a Plasmon-Induced Hot Electron Flow in a Multimetallic Nanostructure.

ABSTRACT: Plasmon hot carriers are interesting for photoredox chemical synthesis but their direct utilization is limited by their ultrafast thermalization. Therefore, they are often transferred to suitable accepting materials that expedite their lifetime. Solid-state photocatalysts are technologically more suitable than their molecular counterparts, but their photophysical processes are harder to follow due to the absence of clear optical fingerprints. Herein, the journey of hot electrons in a solid-state multimetallic photocatalyst is revealed by a combination of ultrafast visible and infrared spectroscopy. Dynamics showed that electrons formed upon silver plasmonic excitation reach the gold catalytic site within 700 fs and the electron flow could also be reversed. Gold is the preferred site until

SUBMITTER: van Turnhout L 

PROVIDER: S-EPMC7662917 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature