Cyclodextrin Films with Fast Solvent Transport and Shape-Selective Permeability.
basic_science · Level V
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- Record sourced from PubMed, PMID 28437014.
- Also identified by DOI 10.1002/adma.201606641.
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Abstract
This study describes the molecular-level design of a new type of filtration membrane made of crosslinked cyclodextrins-inexpensive macrocycles of glucose, shaped like hollow truncated cones. The channel-like cavities of cyclodextrins spawn numerous paths of defined aperture in the separation layer that can effectively discriminate between molecules. The transport of molecules through these membranes is highly shape-sensitive. In addition, the presence of hydrophobic (cavity) and hydrophilic (ester-crosslinked outer part) domains in these films results in high permeances for both polar and nonpolar solvents.