|317. Xu, Y.; Bolisetty, S.; Ballauff, M.; Müller, A.H.E.: Switching the Morphologies of Cylindrical Polycation Brushes by Ionic and Supramolecular Inclusion Complexes, J. Am. Chem. Soc. 131(5), 1640 (2009) -- DOI: 10.1021/ja807302j -- PDF|
Cylindrical polycation brushes form an ionic complex with surfactant sodium dodecyl sulfate (SDS) in aqueous solution, which causes a worm-to-sphere collapse of the brush. α- and β-Cyclodextrin (CD) returns the brush to the worm-like conformation by forming a supramolecular inclusion complex with SDS. When β-CD was employed for the inclusion complex, addition of 1-adamantylammonium chloride releases SDS by forming a stronger inclusion complex, causing the re-collapse of the brush to spheres.
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