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Piston Rotaxane Monolayers: Shear Swelling and Nanovalve Behavior

Boesten, Ruud; Sevick, Edith M; Williams, David


A piston-rotaxane is a rotaxane molecule where one of the free rings is attached to a rod-like polymer (the piston). We examine the behavior of a system of piston rotaxanes grafted by one end to a surface in the presence of a fluid flow. At a critical shear rate the rotaxane layer will extend perpendicular to the surface, i.e. the system undergoes shear-induced swelling. When the inside surface of a narrow tube is coated with these rotaxanes a nanovalve can be created which has a highly...[Show more]

CollectionsANU Research Publications
Date published: 2010
Type: Journal article
Source: Macromolecules
DOI: 10.1021/ma902824t


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