ArticleAngewandte Chemie (International ed. in English)2022
Static and Dynamic Gradient Based Directional Transportation of Neutral Molecules in Swollen Polymer Films.
Article in Angewandte Chemie (International ed. in English), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Shellac-based encapsulation model incorporating calcium fluoride for oral care applications.Biomaterials translational · 2026Article
- Temperature-responsive peristome-structured smart surface for the unidirectional controllable motion of large droplets.Microsystems & nanoengineering · 2023Article
- Static and Dynamic Gradient Based Directional Transportation of Neutral Molecules in Swollen Polymer Films.Angewandte Chemie (International ed. in English) · 2022Article
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4 authors.
Funding
Abstract
Materials which selectively transport molecules offer powerful opportunities for concentrating and separating chemical agents. Here, utilizing static and dynamic chemical gradients, transport of molecules within swollen crosslinked polymers is demonstrated. Using an ≈200 μm static hydroxyl to hexyl gradient, the neutral ambipolar nerve agent surrogate diethyl (cyanomethyl)phosphonate (DECP) is directionally transported and concentrated 60-fold within 4 hours. To accelerate transport kinetics, a dynamic gradient (a "travelling wave") is utilized. Here, the non-polar dye pyrene was transported. The dynamic gradient is generated by an ion exchange process triggered by the localized introduction of an aqueous NaCl solution, which converts the gel from hydrophobic to hydrophilic. As the hydrophilic region expands, associated water enters the gel, and pyrene is pushed ahead of the expansion front. The dynamic gradient provides about 10-fold faster transport kinetics than the static gradient.
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Registered trials
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