Journal
NATURE COMMUNICATIONS
Volume 9, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/s41467-018-05560-3
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Funding
- CSC Cambridge scholarship
- ETN-COLLDENSE (H2020-MCSA-ITN-2014) [642774]
- BBSRC David Phillips fellowship [BB/K014617/1]
- European Research Council [ERC-2014-STG H2020 639088]
- Engineering and Physical Sciences Research Council (EPSRC) [1525292]
- European Commission (Marie Curie Fellowship LODIS) [701455]
- Marie Curie FP7 SASSYPOL ITN [607602]
- EPSRC [EP/L027151/1]
- Marie Curie Actions (MSCA) [701455] Funding Source: Marie Curie Actions (MSCA)
- BBSRC [BB/K014617/1] Funding Source: UKRI
- EPSRC [EP/L027151/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/L027151/1] Funding Source: researchfish
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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.
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