Unexpected stability of aqueous dispersions of raspberry-like colloids

Lan, Y.; Caciagli, A.; Guidetti, G.; Yu, Z.; Liu, J.; Johansen, V. E.; Kamp, M.; Abell, C.; Vignolini, Silvia; Scherman, O. A.; Eiser, E.

doi:10.1038/s41467-018-05560-3

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Unexpected stability of aqueous dispersions of raspberry-like colloids

MPS-Authors

There are no MPG-Authors in the publication available

External Resource

No external resources are shared

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Lan, Y., Caciagli, A., Guidetti, G., Yu, Z., Liu, J., Johansen, V. E., et al. (2018). Unexpected stability of aqueous dispersions of raspberry-like colloids. Nature Communications, 9(1): 3614. doi:10.1038/s41467-018-05560-3.

Cite as: https://hdl.handle.net/21.11116/0000-000B-FABC-8

Abstract

Aqueous colloidal suspensions, both man-made and natural, are part of our everyday life. The applicability of colloidal suspensions, however, is limited by the range of conditions over which they are stable. Here we report a novel type of highly monodisperse raspberry-like colloids, which are prepared in a single-step synthesis that relies on simultaneous dispersion and emulsion polymerisation. The resulting raspberry colloids behave almost like hard spheres. In aqueous solutions, such prepared raspberries show unexpected stability against aggregation over large variations of added salt concentrations without addition of stabilisers. We present simple Derjaguin–Landau–Verwey–Overbeek (DLVO) calculations performed on raspberry-like and smooth colloids showing that this stability results from our raspberries’ unique morphology, which extends our understanding of colloidal stability against salting. Further, the raspberries’ stability facilitates the formation of superspheres and thin films in which the raspberry colloids self-assemble into hexagonally close-packed photonic crystals with exquisite reproducibility. © 2018, The Author(s).