Publikation: Giant permittivity and dynamic mobility observed for spherical polyelectrolyte brushes
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2011
Autor:innen
Jiménez, Maria Luisa
Delgado, Angel
Ahualli, Silvia
Hoffmann, Marius
Ballauff, Matthias
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Soft Matter. 2011, 7(8), pp. 3758-3762. ISSN 1744-683X. Available under: doi: 10.1039/C0SM01544J
Zusammenfassung
We prcsent a study of the electrodynamic behavior of concentrated suspensions of spherical polyelectrolyte brushcs (SPBs). The dynamic mobility of the SPBs exhibits giant values. Concomitantly, . the dielectric spectra of suspensions of these particlcs display enormous loss peaks in the kHz frequency range. The strong dielectric relaxation is a direct consequence of the inhomogeneity of the counterion distribution inside the polyelectrolyte layer. As can be concluded from the experimentally determined relaxation frequency, the mobility of mono valent counterions is strongly diminished in the brush region. The dynamic behavior ofthe SPBs at high volume fractions can be explained by the assumption that the polyelectrolyte chains deform when particlcs approach each other.
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JIMÉNEZ, Maria Luisa, Angel DELGADO, Silvia AHUALLI, Marius HOFFMANN, Alexander WITTEMANN, Matthias BALLAUFF, 2011. Giant permittivity and dynamic mobility observed for spherical polyelectrolyte brushes. In: Soft Matter. 2011, 7(8), pp. 3758-3762. ISSN 1744-683X. Available under: doi: 10.1039/C0SM01544JBibTex
@article{Jimenez2011Giant-20181,
year={2011},
doi={10.1039/C0SM01544J},
title={Giant permittivity and dynamic mobility observed for spherical polyelectrolyte brushes},
number={8},
volume={7},
issn={1744-683X},
journal={Soft Matter},
pages={3758--3762},
author={Jiménez, Maria Luisa and Delgado, Angel and Ahualli, Silvia and Hoffmann, Marius and Wittemann, Alexander and Ballauff, Matthias}
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