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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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Carborane-Based Three-Dimensional Covalent Organic Frameworks.

Xiaoyi Xu1, Qirui Cui2, Hongzheng Chen1

  • 1State Key Laboratory of Silicon and Advanced Semiconductor Materials, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310058, China.

Journal of the American Chemical Society
|October 27, 2023
PubMed
Summary
This summary is machine-generated.

We developed novel 3D carborane-based covalent organic frameworks (COFs) for efficient hexane isomer separation. These robust materials showcase high carborane content and exceptional porosity for advanced adsorption applications.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Chemical Engineering

Background:

  • Covalent organic frameworks (COFs) offer tunable porous structures for advanced applications.
  • Achieving precise control over COF composition, topology, and stability remains a significant challenge.
  • Developing novel 3D COFs with enhanced functionality is crucial for addressing cutting-edge issues.

Purpose of the Study:

  • To synthesize and characterize a new three-dimensional (3D) carborane-based COF.
  • To investigate the potential of this COF for the adsorption and separation of hexane isomers.
  • To explore the relationship between the COF's structure, carborane content, and separation performance.

Main Methods:

  • Synthesis of a 3D carborane-based COF with a 7-fold interpenetrating dia topological diagram.
  • Characterization of the COF's crystallinity, porosity, and structural robustness.
  • Evaluation of the COF's performance in separating hexane isomers based on B-H···H-C interactions.

Main Results:

  • The synthesized COF exhibited high crystallinity, exceptional porosity, and strong robustness.
  • The carborane content reached 54.2 wt%, the highest reported for porous materials.
  • The COF demonstrated high-performance adsorption and separation of hexane isomers due to unique B-H polarization and high surface area.

Conclusions:

  • The developed 3D carborane-based COF offers a promising platform for efficient alkane isomer separation.
  • This work expands the diversity of functional 3D COFs and demonstrates their potential in gas separation.
  • The high carborane content and robust structure make these COFs efficient adsorbents for challenging separation tasks.