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000861897 1001_ $$00000-0002-8988-330X$$aScotti, A.$$b0$$eCorresponding author
000861897 245__ $$aExploring the colloid-to-polymer transition for ultra-low crosslinked microgels from three to two dimensions
000861897 260__ $$a[London]$$bNature Publishing Group UK$$c2019
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000861897 520__ $$aMicrogels are solvent-swollen nano- and microparticles that show prevalent colloidal-like behavior despite their polymeric nature. Here we study ultra-low crosslinked poly(N-isopropylacrylamide) microgels (ULC), which can behave like colloids or flexible polymers depending on dimensionality, compression or other external stimuli. Small-angle neutron scattering shows that the structure of the ULC microgels in bulk aqueous solution is characterized by a density profile that decays smoothly from the center to a fuzzy surface. Their phase behavior and rheological properties are those of soft colloids. However, when these microgels are confined at an oil-water interface, their behavior resembles that of flexible macromolecules. Once monolayers of ultra-low crosslinked microgels are compressed, deposited on solid substrate and studied with atomic-force microscopy, a concentration-dependent topography is observed. Depending on the compression, these microgels can behave as flexible polymers, covering the substrate with a uniform film, or as colloidal microgels leading to a monolayer of particles.
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000861897 65017 $$0V:(DE-MLZ)GC-1602-2016$$2V:(DE-HGF)$$aPolymers, Soft Nano Particles and  Proteins$$x0
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000861897 7001_ $$0P:(DE-HGF)0$$aBochenek, S.$$b1
000861897 7001_ $$0P:(DE-Juel1)IHRS-BioSoft-140004$$aBrugnoni, M.$$b2
000861897 7001_ $$0P:(DE-HGF)0$$aFernandez-Rodriguez, M. A.$$b3
000861897 7001_ $$0P:(DE-HGF)0$$aSchulte, M. F.$$b4
000861897 7001_ $$0P:(DE-Juel1)171614$$aHouston, J. E.$$b5
000861897 7001_ $$0P:(DE-HGF)0$$aGelissen, A. P. H.$$b6
000861897 7001_ $$0P:(DE-HGF)0$$aPotemkin, I. I.$$b7
000861897 7001_ $$00000-0001-6731-9620$$aIsa, L.$$b8
000861897 7001_ $$0P:(DE-Juel1)IHRS-BioSoft-140012$$aRichtering, W.$$b9$$eCorresponding author
000861897 773__ $$0PERI:(DE-600)2553671-0$$a10.1038/s41467-019-09227-5$$gVol. 10, no. 1, p. 1418$$n1$$p1418$$tNature Communications$$v10$$x2041-1723$$y2019
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