Probing polyelectrolyte elasticity using radial distribution function.
We study the effect of electrostatic interactions on the distribution function of the end-to-end distance of a single polyelectrolyte chain in the rodlike limit. The extent to which the radial distribution function of a polyelectrolyte is reproduced by that of a wormlike chain with an adjusted persi...
| Main Authors: | , , |
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| Format: | Journal article |
| Language: | English |
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2003
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| _version_ | 1797097794124644352 |
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| author | Zandi, R Rudnick, J Golestanian, R |
| author_facet | Zandi, R Rudnick, J Golestanian, R |
| author_sort | Zandi, R |
| collection | OXFORD |
| description | We study the effect of electrostatic interactions on the distribution function of the end-to-end distance of a single polyelectrolyte chain in the rodlike limit. The extent to which the radial distribution function of a polyelectrolyte is reproduced by that of a wormlike chain with an adjusted persistence length is investigated. Strong evidence is found for a universal scaling formula connecting the effective persistence length of a polyelectrolyte with its linear charge density and the Debye screening of its self-interaction. An alternative definition of the electrostatic persistence length is proposed based on matching of the maximum of the distribution with that of an effective wormlike chain, as opposed to the traditional matching of the first or the second moments of the distributions. It is shown that this definition provides a more accurate probe of the affinity of the distribution to that of the wormlike chains, as compared to the traditional definition. It is also found that the length of a polyelectrolyte segment can act as a crucial parameter in determining its elastic properties. |
| first_indexed | 2024-03-07T05:00:21Z |
| format | Journal article |
| id | oxford-uuid:d80d0012-3d0e-4121-9df1-289cba6f23c9 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T05:00:21Z |
| publishDate | 2003 |
| record_format | dspace |
| spelling | oxford-uuid:d80d0012-3d0e-4121-9df1-289cba6f23c92022-03-27T08:45:34ZProbing polyelectrolyte elasticity using radial distribution function.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:d80d0012-3d0e-4121-9df1-289cba6f23c9EnglishSymplectic Elements at Oxford2003Zandi, RRudnick, JGolestanian, RWe study the effect of electrostatic interactions on the distribution function of the end-to-end distance of a single polyelectrolyte chain in the rodlike limit. The extent to which the radial distribution function of a polyelectrolyte is reproduced by that of a wormlike chain with an adjusted persistence length is investigated. Strong evidence is found for a universal scaling formula connecting the effective persistence length of a polyelectrolyte with its linear charge density and the Debye screening of its self-interaction. An alternative definition of the electrostatic persistence length is proposed based on matching of the maximum of the distribution with that of an effective wormlike chain, as opposed to the traditional matching of the first or the second moments of the distributions. It is shown that this definition provides a more accurate probe of the affinity of the distribution to that of the wormlike chains, as compared to the traditional definition. It is also found that the length of a polyelectrolyte segment can act as a crucial parameter in determining its elastic properties. |
| spellingShingle | Zandi, R Rudnick, J Golestanian, R Probing polyelectrolyte elasticity using radial distribution function. |
| title | Probing polyelectrolyte elasticity using radial distribution function. |
| title_full | Probing polyelectrolyte elasticity using radial distribution function. |
| title_fullStr | Probing polyelectrolyte elasticity using radial distribution function. |
| title_full_unstemmed | Probing polyelectrolyte elasticity using radial distribution function. |
| title_short | Probing polyelectrolyte elasticity using radial distribution function. |
| title_sort | probing polyelectrolyte elasticity using radial distribution function |
| work_keys_str_mv | AT zandir probingpolyelectrolyteelasticityusingradialdistributionfunction AT rudnickj probingpolyelectrolyteelasticityusingradialdistributionfunction AT golestanianr probingpolyelectrolyteelasticityusingradialdistributionfunction |