A Reversible Single-molecule Switch Based On Activated ... - OSTI.GOV
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- Columbia Univ., New York, NY (United States). Dept. of Chemistry
- Columbia Univ., New York, NY (United States). Dept. of Applied Physics
- Fudan Univ., Shanghai (China)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Molecular Foundry
- Columbia Univ., New York, NY (United States). Dept. of Chemistry; Columbia Univ., New York, NY (United States). Dept. of Applied Physics
Single-molecule electronic devices provide researchers with an unprecedented ability to relate novel physical phenomena to molecular chemical structures. Typically, conjugated aromatic molecular backbones are relied upon to create electronic devices, where the aromaticity of the building blocks is used to enhance conductivity. We capitalize on the classical physical organic chemistry concept of Hückel antiaromaticity by demonstrating a single-molecule switch that exhibits low conductance in the neutral state and, upon electrochemical oxidation, reversibly switches to an antiaromatic high-conducting structure. We form single-molecule devices using the scanning tunneling microscope–based break-junction technique and observe an on/off ratio of ~70 for a thiophenylidene derivative that switches to an antiaromatic state with 6-4-6-p electrons. Through supporting nuclear magnetic resonance measurements, we show that the doubly oxidized core has antiaromatic character and we use density functional theory calculations to rationalize the origin of the high-conductance state for the oxidized single-molecule junction. Together, our work demonstrates how the concept of antiaromaticity can be exploited to create single-molecule devices that are highly conducting.
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| journal | January 2006 |
Molecular rectifiers
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Tunable Charge Transport in Single-Molecule Junctions via Electrolytic Gating
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Quasiparticle Spectra from a Nonempirical Optimally Tuned Range-Separated Hybrid Density Functional
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Generalized Gradient Approximation Made Simple
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One-Way Optoelectronic Switching of Photochromic Molecules on Gold
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Renormalization of Molecular Electronic Levels at Metal-Molecule Interfaces
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Electron Transport in Molecular Wire Junctions
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Measurement of Single-Molecule Resistance by Repeated Formation of Molecular Junctions
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Thermoelectricity in Molecular Junctions
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Covalently bonded single-molecule junctions with stable and reversible photoswitched conductivity
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Formation and Evolution of Single Molecule Junctions
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| journal | January 2019 |
Multicenter‐Bond‐Based Quantum Interference in Charge Transport Through Single‐Molecule Carborane Junctions
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Dinaphthobenzo[1,2:4,5]dicyclobutadiene: Antiaromatic and Orthogonally Tunable Electronics and Packing
| journal | January 2019 |
Multicenter-Bond-Based Quantum Interference in Charge Transport Through Single-Molecule Carborane Junctions
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Electrical and spin switches in single‐molecule junctions
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Side-group chemical gating via reversible optical and electric control in a single molecule transistor
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Non-aromatic annulene-based aggregation-induced emission system via aromaticity reversal process
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Two-electron transfer stabilized by excited-state aromatization
| journal | November 2019 |
Concepts in the design and engineering of single-molecule electronic devices
| journal | February 2019 |
Direct Au–C contacts based on biphenylene for single molecule circuits
| journal | January 2018 |
Electron transport behavior of quinoidal heteroacene-based junctions: effective electron-transport pathways and quantum interference
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A sub 20 nm metal-conjugated molecule junction acting as a nitrogen dioxide sensor
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Versatile electrochemical approaches towards the fabrication of molecular electronic devices
| journal | January 2020 |
Exploring antiaromaticity in single-molecule junctions formed from biphenylene derivatives
| journal | January 2019 |
A theoretical study on a series of polycyclic conjugated hydrocarbons—dinaphthobenzo[1,2:4,5]dicyclobutadienes with tunable charge transport properties by controlling [ N ]phenylenes and (anti)aromaticity
| journal | January 2019 |
Transition from stochastic events to deterministic ensemble average in electron transfer reactions revealed by single-molecule conductance measurement
| journal | February 2019 |
Quantum interference mediated vertical molecular tunneling transistors
| journal | October 2018 |
Electronegativity, symmetry, and bond strength intrinsically control charge transport through five-membered single-molecule junction
| journal | October 2019 |
Electron transport behavior of quinoidal heteroacene-based junctions: effective electron-transport pathways and quantum interference.
| text | January 2018 |
Linked Research (1)
Search linked research: Sort by Date Sort by Title ↺ A reversible single-molecule switch based on activated antiaromaticity
| text | January 2017 |
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36 MATERIALS SCIENCE 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRYTag » A Reversible Single-molecule Switch Based On Activated Antiaromaticity
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A Reversible Single-molecule Switch Based On Activated Antiaromaticity
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A Reversible Single-molecule Switch Based On Activated Antiaromaticity
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