A plug and socket approach for tightening polyelectrolyte multilayers.

A plug and socket approach for tightening polyelectrolyte multilayers is introduced based on the use pendant β-cyclodextrin groups. Prototypical multilayers derived from poly(sodium 4-styrene sulfonate) and β-cyclodextrin-containing poly(4-vinylbenzyltrimethylammonium chloride) are described. Evidence for tightened multilayers has been obtained from gas permeation, swelling and quartz crystal microbalance with dissipation (QCM-D) measurements.

pK-Dependent Facilitated Transport of CO across Hyperthin Polyelectrolyte Multilayers.

Hyperthin (ca. 20-30 nm thick) polyelectrolyte multilayers have been fabricated that are capable of facilitated transport of CO. These membranes were fabricated from polycations bearing pendant groups of varying basicity plus poly(sodium 4-styrenesulfonate) as a polycounterion.