Plasmonic Imaging of Tuning Electron Tunneling Mediated by a Molecular Monolayer.

ABSTRACT: Probing and tuning the electron tunneling in metal electrode-insulator-metal nanoparticle systems provide a unique vision for understanding the fundamental mechanism of electrochemistry and broadening the horizon in practical applications of molecular electronics in many electrochemical systems. Here we report a plasmonic imaging technique to monitor the local double-layer charging of individual Au nanoparticles deposited on gold electrode separated by monolayer of n-alkanethiol molecules. The thickness of molecular monolayer tunes the tunneling kinetics and conductivity, which predicts the heterogeneous behavior on the modified electrode surface for different electrochemical systems. We studied the distance dependence of the electron tunneling and double layer charging processes by

SUBMITTER: Wang Z 

PROVIDER: S-EPMC8549056 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature