Fig. 1: Fabrication of uniform chiral COF membranes. | Nature Communications

Fig. 1: Fabrication of uniform chiral COF membranes.

From: A homochiral covalent organic framework membrane for the enantioseparation and fractionation of amino acids

Fig. 1

a Schematic illustration of interfacial polymerization for preparing crystalline COF membranes with ABC stacking. b Digital photo of a large-scale D-TAH-COF membrane on the polyacrylonitrile (PAN) support. c SEM image of the membrane surface. d symmetric solid-state CD spectra of a pair of chiral membranes. e N2 adsorption isotherms of D-TAH-COF membrane measuring at 77 K. The inset shows the corresponding pore size distribution. f XRD patterns of D-TAH-COF membrane: experimental (red); Pawley refined (black); and the corresponding difference (blue) and Bragg position (green); simulated patterns for ABC stacking (purple).

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