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Proceedings Paper

Effect of counterion distribution on the electrostatic component of the persistence length of flexible linear polyions
Author(s): Debbie Klearman; Kenneth S. Schmitz
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Paper Abstract

We examine in more detail the "three-region" model recently proposed to explain the dependence of the persistence length of linear polyions as a function of small ion concentration under low ionic conditions. The three regions approximated as step functions are: (1) "condensed counterions" on the surface of the polyion whose function is simply to reduce the effective charge of each polyion site; (2) a counterion sheath in the vicinity of the polyion that may extend tens of angstroms from the polyion surface; and (3) the "bulk" solution concentration. Incorporated in this model is the property that the concentration of ions in region (2) increases relative to the concentration of ions in region (3) as the polyion concentration is decreased.

Paper Details

Date Published: 1 June 1991
PDF: 20 pages
Proc. SPIE 1430, Photon Correlation Spectroscopy: Multicomponent Systems, (1 June 1991); doi: 10.1117/12.44171
Show Author Affiliations
Debbie Klearman, Univ. of Missouri/Kansas City (United States)
Kenneth S. Schmitz, Univ. of Missouri/Kansas City (United States)

Published in SPIE Proceedings Vol. 1430:
Photon Correlation Spectroscopy: Multicomponent Systems
Kenneth S. Schmitz, Editor(s)

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