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Related Experiment Video

Updated: Apr 6, 2026

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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Few-layer, large-area, 2D covalent organic framework semiconductor thin films.

Jeremy I Feldblyum1, Clara H McCreery, Sean C Andrews

  • 1Department of Chemical Engineering, Stanford University, 443 Via Ortega, Stanford, California 94305, USA. zbao@stanford.edu.

Chemical Communications (Cambridge, England)
|August 4, 2015
PubMed
Summary
This summary is machine-generated.

Researchers developed large-area, thin films of conjugated, imine-based, two-dimensional covalent organic frameworks. These films, ranging from 2-200 nm, can be transferred to substrates for use in field-effect transistors.

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Area of Science:

  • Materials Science
  • Organic Electronics
  • Nanotechnology

Background:

  • Conjugated polymers and frameworks are crucial for organic electronics.
  • Developing scalable synthesis methods for 2D materials is an ongoing challenge.
  • Covalent organic frameworks (COFs) offer tunable electronic properties.

Purpose of the Study:

  • To synthesize large-area thin films of a conjugated, imine-based, 2D covalent organic framework.
  • To achieve controlled film thicknesses for device applications.
  • To demonstrate the utility of these films in field-effect transistors.

Main Methods:

  • Solution/air interface synthesis of 2D COFs.
  • Controlled deposition to achieve thicknesses from 2-200 nm.
  • Transfer printing technique for substrate integration.

Main Results:

  • Successful synthesis of large-area, conjugated, imine-based 2D COF films.
  • Precise control over film thickness (∼2-200 nm).
  • Demonstrated transferability of films to various substrates.
  • Fabrication of field-effect transistors utilizing the COF films as active layers.

Conclusions:

  • The developed synthesis method enables scalable production of high-quality 2D COF films.
  • The transfer printing technique facilitates device fabrication.
  • These imine-based COF films show promise as active semiconducting materials for electronic devices.