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@ARTICLE{Zhang:187474,
author = {Zhang, Jing and Lettinga, M.P. and Dhont, Jan K.G. and
Stiakakis, Emmanuel},
title = {{D}irect {V}isualization of {C}onformation and {D}ense
{P}acking of {DNA}-{B}ased {S}oft {C}olloids},
journal = {Physical review letters},
volume = {113},
number = {26},
issn = {0031-9007},
address = {College Park, Md.},
publisher = {APS},
reportid = {FZJ-2015-01103},
pages = {268303},
year = {2014},
abstract = {Soft colloids—such as polymer-coated particles, star
polymers, block-copolymer micelles, microgels—constitute a
broad class of materials where microscopic properties such
as deformability and penetrability of the particle play a
key role in tailoring their macroscopic properties which is
of interest in many technological areas. The ability to
access these microscopic properties is not yet demonstrated
despite its great importance. Here we introduce novel
DNA-coated colloids with star-shaped architecture that
allows accessing the above local structural information by
directly visualizing their intramolecular monomer density
profile and arm’s free-end locations with confocal
fluorescent microscopy. Compression experiments on a
two-dimensional hexagonal lattice formed by these
macromolecular assemblies reveal an exceptional resistance
to mutual interpenetration of their charged corona at
pressures approaching the MPa range. Furthermore, we find
that this lattice, in a close packing configuration, is
surprisingly tolerant to particle size variation. We
anticipate that these stimuli-responsive materials could aid
to get deeper insight in a wide range of problems in soft
matter, including the study and design of biomimetic
lubricated surfaces.},
cin = {ICS-3},
ddc = {550},
cid = {I:(DE-Juel1)ICS-3-20110106},
pnm = {451 - Soft Matter Composites (POF2-451)},
pid = {G:(DE-HGF)POF2-451},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000350218000032},
doi = {10.1103/PhysRevLett.113.268303},
url = {https://juser.fz-juelich.de/record/187474},
}