Mechanism of molecular conductance enhanced via the D–A effect
Abstract
The donor-acceptor (D-A) molecular architecture is widely employed in the design of organic semiconductors; however, its charge transport characteristics at the single-molecule level remain rarely explored. To elucidate the intrinsic mechanism, this study integrates single-molecule conductance measurements, photophysical spectroscopy, and quantum chemical calculations to research D-A molecule systems. It shows that the D-A effect on conductance enhancement is not governed by a reduced molecular bandgap or a lowered charge injection barrier, but related to the reduction in exciton binding energy for the charge when transported across two electrodes through the molecule.
Fields of Study & Subjects
Molecular Junctions and Nanostructures
Organic Electronics and Photovoltaics
Organic Light-Emitting Diodes Research
Publication details
- Journal / source
- Physical Chemistry Chemical Physics
- Publisher
- Royal Society of Chemistry (RSC)
- Volume
- 28
- Issue
- 11
- Pages
- 6682–6686
- Publication date
- 1 January 2026
- Language
- EN