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Atomic Scale Structural Studies of Macromolecular Assemblies by Solid-state Nuclear Magnetic Resonance Spectroscopy
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Published on: September 17, 2017

Charge transport through linear carbon atomic chains.

James M F Morris1, Jarred Potter2, Elena Gorenskaia2

  • 1Department of Chemistry, University of Liverpool, Liverpool, UK.

Nature Chemistry
|June 12, 2026
PubMed
Summary
This summary is machine-generated.

Researchers created stable gold-carbon devices to study carbyne, a one-dimensional carbon chain. Longer chains showed enhanced charge transport, paving the way for new carbon nanoelectronics.

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Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Nanotechnology

Background:

  • Carbyne, a linear carbon allotrope, exhibits exceptional predicted properties but faces synthetic challenges.
  • Existing carbyne models with end-groups show altered electronic configurations, limiting fundamental studies.
  • Stabilizing carbyne is crucial for unlocking its potential in advanced materials.

Purpose of the Study:

  • To synthesize and characterize end-group-free one-dimensional carbon chains (carbyne) in a stable device format.
  • To investigate the charge transport properties of carbyne chains of varying lengths.
  • To explore the potential of carbyne in future carbon-based nanoelectronics.

Main Methods:

  • Utilizing transmetallation to transfer linear carbon fragments from Au(I) to Au(0) electrodes, forming stable Au|C...C|Au devices.
  • Employing scanning tunneling microscope break junction techniques to measure charge transport.
  • Characterizing one-dimensional carbon chains ranging from oligoyne to cumulene-like structures.

Main Results:

  • Successfully created stable devices with end-group-free carbon chains up to 16 atoms.
  • Observed length-dependent conductance: shorter chains behaved like oligoynes, while longer chains approached cumulenic structures.
  • Longer chains exhibited significantly enhanced charge transport, indicating quasi-ballistic transport.

Conclusions:

  • Direct electrode-carbon contact at interfaces stabilizes carbyne within the junction.
  • The study demonstrates a viable method for studying carbyne's intrinsic properties.
  • This work provides a pathway for developing advanced nanoelectronic devices based on carbyne.