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Reference type: Journal
Authors: Chen H, Zeng G, Wang Z, Zhang X
Article Title: To Construct "Ion Traps" for Enhancing the Permselectivity and Permeability of Polyelectrolyte Multilayer Films.
Publication date: 2007
Journal: Macromolecules
Volume: 40
Issue: (3)
Page numbers: 653-660.
DOI: 10.1021/ma061406k

Abstract: Abstract: We introduced single-charged molecules into layer-by-layer film of polymers by mixing polyelectrolyte and single-charged molecules with an appropriate ratio to form polymer complex and then deposition in alternation with counter-polyelectrolyte. By immersing the layer-by-layer film into aqueous solution of electrolytes, the single-charged molecules could be released from the layer-by-layer film. An interesting finding is the releasing of the single-charged molecules gave the multilayer film the permselectivity. For example, cations would be trapped and anions be repelled if positive-charged molecules were used. Multilayer films able to trap either cations or anions could be fabricated, depending on the nature of single-charged template molecules used. Thus, the ion permselectivity of multilayer film was enhanced. Moreover, the permeability of the film was also dramatically increased, suggesting the potential application of layer-by-layer films as highly efficient ion-permselective membranes
Template and target information: 1-pyrenemethylamine hydrochloride, PMAH, 1-pyrenesulfonic acid sodium salt, PSAH, 6,8-dihydroxypyrene-1,3-disulfonic acid disodium salt, P-2S, 8-hydroxy-1,3,6-pyrenetrisulfonic acid trisodium salt, P-3S, 1,3,6,8-pyrenetetrasulfonic acid tetrasodium salt, P-4S, sodium 9-anthracenepropionate, SANP, anthracen-9-ylmethyltrimethylammonium bromide, ATAB, 1,1-binaphthyl-2,2-diyl hydrogen phosphate, BNDHP, coumarin-3-carboxylic acid, coumarin-3, cinnamic acid

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