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Related Experiment Video

Updated: Apr 25, 2026

Ultrahigh Density Array of Vertically Aligned Small-molecular Organic Nanowires on Arbitrary Substrates
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Ultra-narrow donor-acceptor nanoribbons.

James Lawrence1,2, Luka Đorđević3,4, Fabienne Bachtiger5,6

  • 1Department of Chemistry, University of Warwick, Coventry, UK. jmlaw91@nus.edu.sg.

Nature Communications
|April 23, 2026
PubMed
Summary

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Researchers synthesized ultra-narrow donor-acceptor nanoribbons on surfaces. This new method precisely controls the composition and electronic properties of these π-conjugated nanostructures for advanced optoelectronics.

Area of Science:

  • Materials Science
  • Organic Electronics
  • Nanotechnology

Background:

  • Donor-acceptor (D-A) architectures are crucial for high-performance conjugated polymers.
  • Their application in atomically precise nanoribbons is largely unexplored.

Purpose of the Study:

  • To report the on-surface synthesis of ultra-narrow D-A nanoribbons.
  • To explore their structural and electronic properties.
  • To establish a platform for engineering π-conjugated nanostructures.

Main Methods:

  • On-surface synthesis using complementary brominated precursors (donor: peri-xanthenoxanthene, acceptor: anthanthrone).
  • High-resolution scanning tunnelling microscopy (STM), non-contact atomic force microscopy (AFM), and scanning tunnelling spectroscopy (STS).

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  • Gas-phase density functional theory (DFT) calculations and a linear combination of molecular orbitals (LCAO) model.

    • Main Results:

    • Successful synthesis of well-defined donor-only, acceptor-only, and mixed D-A nanoribbons.
    • Submolecular structural and electronic features were resolved.
    • Electronic properties were tuneable by monomer sequence and length.
    • Experimental results align with DFT and LCAO models.

    Conclusions:

    • A bottom-up synthetic strategy provides precise control over nanoribbon composition and functionality.
    • This approach enables the engineering of π-conjugated nanostructures with tailored optoelectronic properties.
    • Opens new avenues for designing advanced organic electronic materials.