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Cyclodextrin Films with Fast Solvent Transport and Shape‐Selective Permeability
Author(s) -
Villalobos Luis Francisco,
Huang Tiefan,
Peinemann KlausViktor
Publication year - 2017
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201606641
Subject(s) - materials science , membrane , solvent , cyclodextrin , molecule , polar , permeability (electromagnetism) , chemical engineering , nanotechnology , polymer chemistry , organic chemistry , chemistry , biochemistry , physics , astronomy , engineering
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.