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Related Experiment Video

Updated: Sep 11, 2025

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes

Published on: August 16, 2018

Toward Continuous, Oriented Covalent Organic Framework Membranes for Precise Molecular Separations.

Makenna Parkinson¹, Harsh Vardhan², Rafael Verduzco^2,3,4

¹Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520-8286, United States.

|August 15, 2025

Summary

Highly crystalline, continuous covalent organic framework (COF) membranes offer precise molecular separations. These advanced COF membranes enable ultrafast transport and selective separations, overcoming limitations of previous disordered materials.

Keywords:

COF modification covalent organic frameworks crystal orientation crystalline membranes membrane characterization molecular separations one-dimensional nanochannels reticular chemistry

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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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Layer-by-layer Synthesis and Transfer of Freestanding Conjugated Microporous Polymer Nanomembranes

Layer-by-layer Synthesis and Transfer of Freestanding Conjugated Microporous Polymer Nanomembranes

Published on: December 15, 2015

Area of Science:

Materials Science
Chemical Engineering
Nanotechnology

Background:

Porous crystalline frameworks are explored for energy-efficient molecular separations.
Covalent organic frameworks (COFs) offer high porosity, tunability, and stability for membrane applications.
Existing COF membranes are often polycrystalline and discontinuous, limiting separation performance.

Purpose of the Study:

To review the properties of COFs suitable for membrane materials.
To critically assess the limitations of current disordered COF membranes.
To highlight advancements in continuous, oriented 2D COF membranes for precise molecular separations.

Main Methods:

Review of existing literature on COF membrane fabrication and performance.
Analysis of structural properties influencing separation efficiency.
Evaluation of synthesis and modification techniques for continuous, oriented COF membranes.

Main Results:

Disordered COF membranes exhibit suboptimal performance due to structural limitations.
Continuous, oriented 2D COF membranes demonstrate tunable 1D nanochannels.
These membranes facilitate ultrafast transport and highly selective molecular separations.

Conclusions:

Continuous, oriented COF membranes represent a significant advancement for molecular separations.
Further development hinges on improved synthesis of these advanced COF membranes.
Future applications span ion, organic solvent, and gas separations with enhanced efficiency and precision.