Gated off-site radical injection: Bidirectional conductance modulation in single-molecule junctions.

ABSTRACT: Uncovering the effects of radical injection into responsive organic molecules is a long-sought goal, and the single-molecule junctions provide a unique way to investigate molecular conductance evolution during the radical injection. We can modulate the main channel conductance by using electronic injection from off-site neutral radicals acting as gating terminals. Two families of cyclopentadienone derivatives were synthesized, featuring the inter-pyridyl main conductance channel and the inter-radical paths that are linear (FCF) or cross conjugated (PCP). Using a scanning tunneling microscope break junction technique, we find that the injection of mono- and diradicals in the PCP system unexpectedly decreases the conductance regarding the closed-shell analog, while that of FCF systems increa

SUBMITTER: Zhang H 

PROVIDER: S-EPMC11529717 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature