Journal
CHEMICAL SCIENCE
Volume 6, Issue 8, Pages 4929-4933Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5sc01440a
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Funding
- Engineering Physical Sciences Research Council
- University of Cambridge [EP/K503496/1]
- European Research Council [ERC-2009-StG-240629]
- European Research Council under the European Union's Seventh Framework Programme/ERC [297504]
- German Academic Exchange Service (DAAD)
- [EP/H046593/1]
- EPSRC [EP/H046593/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/K503496/1, EP/H046593/1] Funding Source: researchfish
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Host-guest assembly in droplet-based microfluidics opens a new avenue for fabricating supramolecular hydrogel microcapsules with high monodispersity and controlled functionality. In this paper, we demonstrate a single emulsion microdroplet platform to prepare microcapsules with supramolecular hydrogel skins from host molecule cucurbit[8]uril and guest polymer anthracene-functionalized hydroxyethyl cellulose. In contrast to construction of microcapsules from a droplet-in-droplet double emulsion, here the electrostatic attraction between charged polymer and surfactant facilitates formation of defined supramolecular hydrogel skins in a single emulsion. Furthermore, by taking advantage of dynamic interactions and the tunable cross-linked supramolecular hydrogel network, it is possible to prepare microcapsules with triggered and UV-controlled molecular permeability. These could be potentially used in a delivery system for e.g. agrochemicals, nutraceuticals or cosmetics.
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