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Coordination-modulated 6FDA-polyimide membranes for enhanced helium molecular sieving
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DOI：10.1016/j.chempr.2026.103200.png)
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Abstract
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• Coordination-modulated polyimide membranes enable efficient helium separation • Metal-polymer coordination modulates chain packing and transport pathways • Refined sub-nanometer free volume enhances molecular-sieving performance • He/CH4 and He/N2 selectivities reach 533 and 278, surpassing the Robeson upper bound
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