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Microfluidic-based Synthesis of Covalent Organic Frameworks COFs: A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface
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A Dynamic Covalent Organic Framework with Entangled 2D Layers.

Yuanpeng Cheng1, Honglin Du2, Yongyong Wang1

  • 1College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China.

Journal of the American Chemical Society
|February 14, 2025
PubMed
Summary
This summary is machine-generated.

We synthesized a novel dynamic covalent organic framework (COF) with flexible, entangled layers. Exposure to organic vapors induced structural changes, altering pore size and demonstrating potential for adaptive materials.

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Area of Science:

  • Materials Science
  • Supramolecular Chemistry
  • Nanotechnology

Background:

  • Dynamic covalent organic frameworks (COFs) are flexible porous materials with emerging applications.
  • Research on dynamic COFs is limited due to synthesis and characterization challenges.

Purpose of the Study:

  • To design and synthesize a novel dynamic COF with entangled 2D layers.
  • To investigate the material's structural response to organic vapor exposure.

Main Methods:

  • Designed synthesis of a novel COF with entangled 2D layers.
  • Continuous rotation electron diffraction for precise crystal structure determination.
  • Analysis of structural changes before and after organic vapor adsorption.

Main Results:

  • The novel COF exhibited dynamic behavior upon exposure to organic vapors.
  • Vapor adsorption induced conformational changes, including anthracene unit rotation.
  • Layer adjustments and reduced entanglement angles led to significant pore structure alterations.

Conclusions:

  • Introduced a new class of dynamic COFs with entangled 2D layers.
  • Demonstrated vapor-induced structural flexibility and pore modulation in dynamic COFs.
  • Provided a foundation for designing flexible entangled frameworks for various applications.