| Issue |
Europhys. Lett.
Volume 70, Number 1, April 2005
|
|
|---|---|---|
| Page(s) | 102 - 108 | |
| Section | Condensed matter: structural, mechanical and thermal properties | |
| DOI | https://doi.org/10.1209/epl/i2004-10459-y | |
| Published online | 04 March 2005 | |
Radial counterion distributions in polyelectrolyte solutions determined by EPR spectroscopy
1
Laboratorium für Physikalische Chemie, ETH Zürich - CH-8093 Zürich, Switzerland
2
Max-Planck-Institut für Polymerforschung - Postfach 3148, 55021 Mainz, Germany
Corresponding author: jeschke@mpip-mainz.mpg.de
Received:
26
November
2004
Accepted:
1
February
2005
Spin-exchange broadening in solution electron paramagnetic resonance spectra of spin-carrying counterions of poly(diallyldimethylammonium chloride) is analyzed in terms of the radial counterion distribution around the polyelectrolyte chain. For mixtures of water with organic solvents of lower and higher permittivity, the data agree with a scaling of the radial distribution function close to r-2. For low polyelectrolyte concentrations in pure water the line shapes disagree with such scaling.
PACS: 61.41.+e – Polymers, elastomers, and plastics / 76.30.-v – Electron paramagnetic resonance and relaxation / 82.35.Rs – Polyelectrolytes
© EDP Sciences, 2005
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