Researchers Transformed COF Powders into Membranes
A new method turns covalent organic framework powders into high-performance separation membranes.
Updated on Sept. 30, 2026 in Chemistry
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Scientists have developed a strategy to transform covalent organic framework (COF) powders into functional membranes. This process utilizes internal framework reconstruction and external acid attack to create durable separation layers.
Why it matters
This breakthrough overcomes previous challenges in processing COF powders, which were difficult to form into usable membranes. The technology could enhance filtration efficiency in industrial and pharmaceutical applications.
The TpPa membrane achieves a water permeance of 179.0 L m-2 h-1 bar-1 and reaches a maximum surface area of 225 square centimeters. The material demonstrates significant selectivity with 99% rejection of dye molecules and 98% for pharmaceuticals.
The details
Researchers employed a dynamic covalent chemistry-based dual-drive strategy to induce structural variation. By combining framework reconstruction with external acid attack, the team successfully converted the powders into thin, effective filtration membranes.
Timeline
September 30, 2026: The research detailing the membrane transformation was published.
The Big Picture
This development represents a departure from traditional covalent organic framework (COF) processing methodologies, which have historically limited the transition from powdered material to usable structures. It effectively resolves a long-standing constraint in membrane science.
This research could lead to more efficient water purification and pharmaceutical filtration technologies in the future. High-performance membranes of this type may eventually reduce the energy and costs associated with industrial separation processes.
The takeaway
The successful transformation of COF powders demonstrates that complex chemical structures can be adapted for large-scale practical use. Future research will likely focus on scaling these thin-film membranes for industrial applications.
Further reading
For more information on innovations in molecular structures, visit the Chemistry section.
Source note: This article includes information reported by Nature.
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