AI Article Synopsis
- - Conductance measurements of single-molecule junctions show that the interaction between neighboring aromatic molecules can be controlled using laser light.
- - The manipulation is due to a plasmonic gradient force created in nanogaps by gapped antenna electrodes, acting like optical tweezers to bring molecules closer together.
- - This research provides a nondestructive way to study and regulate molecular interactions, enhancing understanding of π-π interactions and enabling precision positioning of tiny objects at the molecular level.
Article Abstract
Via conductance measurements of thousands of single-molecule junctions, we report that the π-π coupling between neighboring aromatic molecules can be manipulated by laser illumination. We reveal that this optical manipulation originates from the optical plasmonic gradient force generated inside the nanogaps, in which the gapped antenna electrodes act as optical tweezers pushing the neighboring molecules closer together. These findings offer a nondestructive approach to regulate the interaction of the molecules, deepening the understanding of the mechanism of π-π interaction, and open an avenue to manipulate the relative position of extremely small objects down to the scale of single molecules.
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| http://dx.doi.org/10.1103/PhysRevLett.133.233001 | DOI Listing |
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