Defect Repair of Polyelectrolyte Bilayers Using SDS: The Action of Micelles Versus Monomers
| Autor: | Nabendu B. Pramanik, Sayali V. Shaligram, Steven L. Regen |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Defect repair
Chemistry Sodium chemistry.chemical_element 02 engineering and technology Surfaces and Interfaces 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Chloride Micelle Polyelectrolyte 0104 chemical sciences chemistry.chemical_compound Monomer Polymer chemistry Electrochemistry medicine General Materials Science 0210 nano-technology Spectroscopy medicine.drug |
| Zdroj: | Langmuir. 37:5306-5310 |
| ISSN: | 1520-5827 0743-7463 |
| DOI: | 10.1021/acs.langmuir.1c00392 |
| Popis: | Defects within single, double, and triple polyelectrolyte bilayers derived from poly(sodium 4-styrenesulfonate) (PSS) and poly(diallyldimethyammonium chloride) (PDDA) have been repaired using aqueous solutions of sodium dodecyl sulfate (SDS), as evidenced by a reduction in their permeability and an increase in their permeation selectivity. In contrast to the use of monomer solutions of SDS, which were moderately effective in repairing only double and triple bilayers, micellar solutions proved highly effective for all three assemblies. Evidence for intact micelles or micellar fragments being deposited on the surface of single bilayers of PSS/PDDA has been obtained from a combination of atomic force microscopy, X-ray photoelectron spectroscopy, ellipsometry, and contact angle measurements. Observed CO |
| Databáze: | OpenAIRE |
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