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Radial distribution function of rod-like polyelectrolytes |
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| Authors: | R Zandi J Rudnick R Golestanian |
| Institution: | (1) Department of Chemistry and Biochemistry, UCLA, Box 951569, Los Angeles, CA 90095-1569, USA, US;(2) Department of Physics and Astronomy, UCLA, Box 951547, Los Angeles, CA 90095-1547, USA, US;(3) Institute for Advanced Studies in Basic Sciences, Zanjan 45195-159, Iran, Institute for Studies in Theoretical Physics and Mathematics, P.O. Box 19395-5531, Tehran, Iran, IR |
| Abstract: | We study the effect of electrostatic interactions on the distribution function of the end-to-end distance of a single polyelectrolyte chain in the rod-like limit. The extent to which the radial distribution function of a polyelectrolyte is reproduced by that of a wormlike chain with an adjusted effective persistence length is investigated. Strong evidence is found for a universal scaling formula connecting the effective persistence length of a polyelectrolyte with the strength of the electrostatic interaction and the Debye screening length. Received 4 March 2002 and Received in final form 1 July 2002 RID="a" ID="a"e-mail: jrudnick@physics.ucla.edu |
| Keywords: | PACS 82 35 Rs Polyelectrolytes – 87 15 La Mechanical properties – 36 20 -r Macromolecules and polymer molecules |
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