Cyclodextrin Films with Fast Solvent Transport and Shape-Selective Permeability

Luis Francisco Villalobos, Tiefan Huang, Klaus-Viktor Peinemann

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230 Scopus citations

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.
Original languageEnglish (US)
Pages (from-to)1606641
JournalAdvanced Materials
Volume29
Issue number26
DOIs
StatePublished - Apr 24 2017

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This research was supported by King Abdullah University of Science and Technology (KAUST). The authors are grateful to Kexin Yao for assisting with the CO2 adsorption experiments and to Mohamed Nejib Hedhili for performing the XPS analysis. The authors thank Rachid Sougrat, Stefan Chisca, Mahendra Kumar, Rahul Shevate, and Federico Pacheco for discussions.

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