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Updated: Jan 26, 2026

Atomic Scale Structural Studies of Macromolecular Assemblies by Solid-state Nuclear Magnetic Resonance Spectroscopy

Atomic Scale Structural Studies of Macromolecular Assemblies by Solid-state Nuclear Magnetic Resonance Spectroscopy

Published on: September 17, 2017

Atomically defined angstrom-scale all-carbon junctions.

Zhibing Tan¹, Dan Zhang¹, Han-Rui Tian¹

¹State Key Laboratory of Physical Chemistry of Solid Surfaces, iChEM, NEL, College of Chemistry and Chemical Engineering, Xiamen University, 361005, Xiamen, China.

Nature Communications

|April 17, 2019

Summary

This summary is machine-generated.

Researchers explored full-carbon electronics using graphene/fullerene junctions. They tuned conductance by modifying fullerene structure and doping, paving the way for novel electronic devices.

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Area of Science:

Condensed Matter Physics
Materials Science
Nanotechnology

Background:

Achieving full-carbon electronics at the angstrom scale presents significant experimental challenges.
Carbon allotropes offer versatile properties for overcoming these challenges in nanoscale electronics.

Purpose of the Study:

To investigate charge transport through graphene/single-fullerene/graphene hybrid junctions.
To explore methods for tuning the electronic properties of sub-nanoscale junctions.
To assess the potential of fullerenes for future full-carbon electronic applications.

Main Methods:

Utilized a single-molecule manipulation technique to construct and probe graphene/fullerene/graphene junctions.
Employed band gap engineering by varying fullerene types (C60, C70, C76, C90).
Investigated conductance modulation via π-system conjugation disruption and heteroatom doping.
Performed density functional theory (DFT) calculations to support experimental findings.

Main Results:

Demonstrated tunable charge transport through sub-nanoscale electronic junctions.
Showcased that breaking π-system conjugation lowers conductance.
Revealed that heteroatom doping introduces transport resonances and increases conductance.
DFT calculations corroborated the experimental observations of charge transport mechanisms.

Conclusions:

Fullerenes are promising building blocks for tunable, full-carbon electronics at the sub-nanoscale.
Structural modifications and doping provide effective strategies for controlling electronic transport.
The study anticipates a future of advanced full-carbon electronics leveraging the diverse family of carbon allotropes.