Fig. 1: Supramolecular nanocrystalline membranes enabled by tuning interfacial hydrogen bonds. | Nature Communications

Fig. 1: Supramolecular nanocrystalline membranes enabled by tuning interfacial hydrogen bonds.

From: Supramolecular nanocrystalline membranes with well-aligned subnanochannels for enhanced reverse osmosis desalination

Fig. 1: Supramolecular nanocrystalline membranes enabled by tuning interfacial hydrogen bonds.The alternative text for this image may have been generated using AI.

a Schematic illustration of the preparation of highly crystalline PCL nanofilm at the air/PEG aqueous solution interface. Interfacial hydrogen bonding facilitates the ordered assembly and orientation of PCL chains, resulting in highly crystalline membranes. PEG refers to polyethylene glycol, while PCL represents polycaprolactone. b An optical image of SNM-2 transferred on the polyethersulfone (PES) support. c An optical microscopy image of SNM-2 on the SiO2/Si wafer, accompanied by the corresponding water contact angle of 43 ± 2°. d The SEM image of SNM-2 transferred on the SiO2/Si wafer. e The height image of SNM-2 dertermined by AFM. f The 3D surface morphology of SNM-2 with a scan area of 10 × 10 μm. Free volume in Tetra-PCL/PEG (g) and Tetra-PCL/H2O (h) (see the space occupied by green volume) detected by a theoretical probe with a radius of 1.2 Å. Simulated pore diameter distributions (i) and fractional free volume (j) of Tetra-PCL/PEG and Tetra-PCL/H2O.

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