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Updated: May 9, 2026
09:09
Layer-by-layer Synthesis and Transfer of Freestanding Conjugated Microporous Polymer Nanomembranes
Published on: December 15, 2015
9.4K
Large-area, self-healing block copolymer membranes for energy conversion.
Christian C M Sproncken1,2, Peng Liu1,2,3, Justin Monney1
1Adolphe Merkle Institute, University of Fribourg, Fribourg, Switzerland.
Nature
|June 5, 2024
Summary
Researchers developed self-healing, biomimetic membranes using block copolymers. These thin, defect-free membranes mimic biological systems, enabling selective ion transport and potential for power generation.
Area of Science:
- Materials Science
- Biomimetic Engineering
- Nanotechnology
Background:
- Membranes are vital for separation processes like water desalination and dialysis.
- Current synthetic membranes face challenges in balancing selectivity and permeability.
- Biological membranes offer a model for decoupling barrier and transport functions.
Purpose of the Study:
- To develop a novel self-assembly strategy for creating biomimetic membranes.
- To engineer membranes with enhanced selectivity and permeability.
- To explore applications in ion transport and energy generation.
Main Methods:
- Utilized an aqueous two-phase system interface for templating and stabilization.
- Fabricated molecularly thin (approx. 35 nm) block copolymer bilayers.
- Functionalized membranes with molecular carriers for selective ion transport.
Main Results:
- Achieved scalable membrane areas (>10 cm²) without defects.
- Demonstrated self-healing properties and high ionic resistance (approx. 1 MΩ cm²).
- Engineered membranes exhibiting exquisite selectivity for potassium over sodium ions.
Conclusions:
- The self-assembly strategy yields high-performance biomimetic membranes.
- These membranes show promise for efficient ion separation and bio-inspired energy harvesting devices.
- The approach offers a new paradigm for designing advanced functional materials.
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