Atomic-precision control of plasmon-induced single-molecule switching in a metal-semiconductor nanojunction.

ABSTRACT: Atomic-scale control of photochemistry facilitates extreme miniaturisation of optoelectronic devices. Localised surface plasmons, which provide strong confinement and enhancement of electromagnetic fields at the nanoscale, secure a route to achieve sub-nanoscale reaction control. Such local plasmon-induced photochemistry has been realised only in metallic structures so far. Here we demonstrate controlled plasmon-induced single-molecule switching of peryleneanhydride on a silicon surface. Using a plasmon-resonant tip in low-temperature scanning tunnelling microscopy, we can selectively induce the dissociation of the O-Si bonds between the molecule and surface, resulting in reversible switching between two configurations within the nanojunction. The switching rate can be controlled by changi

SUBMITTER: Park Y 

PROVIDER: S-EPMC11306799 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature