ArticleChemical science2022
Mechanical compression in cofacial porphyrin cyclophane pincers.
Article in Chemical science, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Revealing Molecule-Internal Mechanisms that Control Phonon Heat Transport through Single-Molecule Junctions by a Genetic Algorithm.ACS nano · 2025Article
- Steric and Conformational Effects in Molecular Junctions.Chemistry, an Asian journal · 2025Review
- Mechanoelectric sensitivity reveals destructive quantum interference in single-molecule junctions.Nature communications · 2024Article
- Making the Most of Nothing: One-Class Classification for Single-Molecule Transport Studies.ACS nanoscience Au · 2024Article
- Benchmarking break-junction techniques: electric and thermoelectric characterization of naphthalenophanes.Nanoscale · 2024Article
- Intramolecular London Dispersion Interactions in Single-Molecule Junctions.Journal of the American Chemical Society · 2024Article
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Intra- and intermolecular interactions are dominating chemical processes, and their concerted interplay enables complex nonequilibrium states like life. While the responsible basic forces are typically investigated spectroscopically, a conductance measurement to probe and control these interactions in a single molecule far out of equilibrium is reported here. Specifically, by separating macroscopic metal electrodes, two π-conjugated, bridge-connected porphyrin decks are peeled off on one side, but compressed on the other side due to the covalent mechanical fixation. We observe that the conductance response shows an exceptional exponential rise by two orders of magnitude in individual breaking events during the stretching. Theoretical studies atomistically explain the measured conductance behavior by a mechanically activated increase in through-bond transport and a simultaneous strengthening of through-space coupling. Our results not only reveal the various interacting intramolecular transport channels in a molecular set of levers, but also the molecules' potential to serve as molecular electro-mechanical sensors and switches.
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Registered trials
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