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Fluorine-Directed Structure-Specific Carbon Nanothreads.

Guangwei Che1, Xingyu Tang1, Puyi Lang1

  • 1Center for High Pressure Science and Technology Advanced Research, Beijing, China.

Chemistry (Weinheim an Der Bergstrasse, Germany)
|June 10, 2025
PubMed
Summary

Researchers synthesized a novel carbon nanothread (CNTh) with a unique "zipper polymer" structure using 1,2,3-trifluorobenzene under high pressure. This breakthrough offers precise control over CNTh synthesis for advanced material applications.

Keywords:
1,2,3‐trifluorobenzenefluorinated carbon nanothreadhigh pressurehydrophobic

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Organic Chemistry

Background:

  • Carbon nanothreads (CNThs) are 1D nanomaterials with predicted strength and flexibility.
  • Existing CNTh synthesis methods often result in non-uniform structures, posing a significant challenge.

Purpose of the Study:

  • To develop a method for synthesizing structure-specific carbon nanothreads.
  • To investigate the polymerization mechanism of 1,2,3-trifluorobenzene under high pressure.

Main Methods:

  • Utilizing 1,2,3-trifluorobenzene (1,2,3-TFB) as a precursor due to its strong dipole.
  • Applying a pressure of 20.1 GPa to induce polymerization.
  • Analyzing the resulting nanostructure and its properties.

Main Results:

  • Successfully synthesized a carbon nanothread with a highly ordered "zipper polymer" structure.
  • Observed anti-parallel stacking and selective [4+2] polymerization of 1,2,3-TFB molecules.
  • The resulting CNTh exhibited high hydrophobicity with a contact angle of 124.6°.

Conclusions:

  • The study demonstrates a novel approach for precise, atom-level synthesis of CNThs.
  • Fluorine substitution in the precursor plays a crucial role in reaction selectivity and structural ordering.
  • The findings provide new insights into the controlled fabrication of 1D nanomaterials.