• Microfluidics News Admin

[Chemical Science] Supramolecular hydrogel microcapsules via cucurbit[8]uril host–guest interactions


Abstract:

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.

Ziyi Yu,a Jing Zhang,a Roger J. Coulston,b Richard M. Parker,a Frank Biedermann,b Xin Liu,a Oren A. Scherman*b and Chris Abell*a Author affiliations * Corresponding authors a Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK E-mail: ca26@cam.ac.uk b Melville Laboratory for Polymer Synthesis, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK E-mail: oas23@cam.ac.uk

Link: http://pubs.rsc.org/en/content/articlelanding/2015/sc/c5sc01440a?iscitedby=True#!divAbstract

#07202017 #dropbasedmicrofluidics #microcapsule

Recent Posts

See All

© 2017 by "Microfluidics News".