Abstract
We report on the preparation of ultrathin polyelectrolyte network films on solid substrates, particularly on mica. This supramolecular construct serves as a useful model of ionogenic surfaces in materials science or biological contexts. The polyelectrolyte network films were prepared from photo-cross-linkable copolymers which in turn were synthesized from 3-(dimethyl-maleinimidopropyl) methacrylate (DMIMA) and tert-butyl methacrylate (tBMA) via radical copolymerization. DMIMA gives rise to photo-cross-linkable sites in the copolymer. Ultrathin multilayered films are prepared with P[tBMA-co-DMIMA] by the Langmuir−Blodgett (LB) technique with mica as the substrate. The mica surface was hydrophobized by a monolayer of cetyltrimethylammonium bromide self-assembled from aqueous solution. Two subsequent reactions were performed with the LB films: cross-linking by irradiation with UV light to fix the morphology of the film; subsequent acidolysis by gaseous HCl to convert the construct into a polyelectrolyte fil...
Published Version
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