Critical adsorption of polyelectrolytes onto planar and convex highly charged surfaces: the nonlinear Poisson-Boltzmann approach
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1088/1367-2630/18/8/083037 http://hdl.handle.net/11449/159098 |
Resumo: | We study the adsorption-desorption transition of polyelectrolyte chains onto planar, cylindrical and spherical surfaces with arbitrarily high surface charge densities by massive Monte Carlo computer simulations. We examine in detail how the well known scaling relations for the threshold transition demarcating the adsorbed and desorbed domains of a polyelectrolyte near weakly charged surfaces-are altered for highly charged interfaces. In virtue of high surface potentials and large surface charge densities, the Debye-Huckel approximation is often not feasible and the nonlinear Poisson-Boltzmann approach should be implemented. At low salt conditions, for instance, the electrostatic potential from the nonlinear Poisson-Boltzmann equation is smaller than the Debye-Huckel result, such that the required critical surface charge density for polyelectrolyte adsorption sigma(c) increases. The nonlinear relation between the surface charge density and electrostatic potential leads to a sharply increasing critical surface charge density with growing ionic strength, imposing an additional limit to the critical salt concentration above which no polyelectrolyte adsorption occurs at all. We contrast our simulations findings with the known scaling results for weak critical polyelectrolyte adsorption onto oppositely charged surfaces for the three standard geometries. Finally, we discuss some applications of our results for some physical-chemical and biophysical systems. |
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Critical adsorption of polyelectrolytes onto planar and convex highly charged surfaces: the nonlinear Poisson-Boltzmann approachpolyelectrolyte adsorptionelectrostatic interactionscritical phenomenaDebye screeningWe study the adsorption-desorption transition of polyelectrolyte chains onto planar, cylindrical and spherical surfaces with arbitrarily high surface charge densities by massive Monte Carlo computer simulations. We examine in detail how the well known scaling relations for the threshold transition demarcating the adsorbed and desorbed domains of a polyelectrolyte near weakly charged surfaces-are altered for highly charged interfaces. In virtue of high surface potentials and large surface charge densities, the Debye-Huckel approximation is often not feasible and the nonlinear Poisson-Boltzmann approach should be implemented. At low salt conditions, for instance, the electrostatic potential from the nonlinear Poisson-Boltzmann equation is smaller than the Debye-Huckel result, such that the required critical surface charge density for polyelectrolyte adsorption sigma(c) increases. The nonlinear relation between the surface charge density and electrostatic potential leads to a sharply increasing critical surface charge density with growing ionic strength, imposing an additional limit to the critical salt concentration above which no polyelectrolyte adsorption occurs at all. We contrast our simulations findings with the known scaling results for weak critical polyelectrolyte adsorption onto oppositely charged surfaces for the three standard geometries. Finally, we discuss some applications of our results for some physical-chemical and biophysical systems.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Deutsche ForschungsgemeinschaftUniversity of PotsdamUNESPDepartment of Physics of IBILCE/Sao Jose do Rio PretoSao Paulo State Univ, Inst Biosci Letters & Exact Sci, BR-15054000 Sao Jose Do Rio Preto, BrazilUniv Potsdam, Inst Phys & Astron, D-14476 Potsdam, GermanySao Paulo State Univ, Inst Biosci Letters & Exact Sci, BR-15054000 Sao Jose Do Rio Preto, BrazilFAPESP: 15/15297-4Iop Publishing LtdUniversidade Estadual Paulista (Unesp)Univ PotsdamCarvalho, Sidney J. de [UNESP]Metzler, RalfCherstvy, Andrey G.2018-11-26T15:31:19Z2018-11-26T15:31:19Z2016-08-18info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article17application/pdfhttp://dx.doi.org/10.1088/1367-2630/18/8/083037New Journal Of Physics. Bristol: Iop Publishing Ltd, v. 18, 17 p., 2016.1367-2630http://hdl.handle.net/11449/15909810.1088/1367-2630/18/8/083037WOS:000384011300004WOS000384011300004.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengNew Journal Of Physics1,653info:eu-repo/semantics/openAccess2023-12-22T06:23:40Zoai:repositorio.unesp.br:11449/159098Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:01:06.267193Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Critical adsorption of polyelectrolytes onto planar and convex highly charged surfaces: the nonlinear Poisson-Boltzmann approach |
title |
Critical adsorption of polyelectrolytes onto planar and convex highly charged surfaces: the nonlinear Poisson-Boltzmann approach |
spellingShingle |
Critical adsorption of polyelectrolytes onto planar and convex highly charged surfaces: the nonlinear Poisson-Boltzmann approach Carvalho, Sidney J. de [UNESP] polyelectrolyte adsorption electrostatic interactions critical phenomena Debye screening |
title_short |
Critical adsorption of polyelectrolytes onto planar and convex highly charged surfaces: the nonlinear Poisson-Boltzmann approach |
title_full |
Critical adsorption of polyelectrolytes onto planar and convex highly charged surfaces: the nonlinear Poisson-Boltzmann approach |
title_fullStr |
Critical adsorption of polyelectrolytes onto planar and convex highly charged surfaces: the nonlinear Poisson-Boltzmann approach |
title_full_unstemmed |
Critical adsorption of polyelectrolytes onto planar and convex highly charged surfaces: the nonlinear Poisson-Boltzmann approach |
title_sort |
Critical adsorption of polyelectrolytes onto planar and convex highly charged surfaces: the nonlinear Poisson-Boltzmann approach |
author |
Carvalho, Sidney J. de [UNESP] |
author_facet |
Carvalho, Sidney J. de [UNESP] Metzler, Ralf Cherstvy, Andrey G. |
author_role |
author |
author2 |
Metzler, Ralf Cherstvy, Andrey G. |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Univ Potsdam |
dc.contributor.author.fl_str_mv |
Carvalho, Sidney J. de [UNESP] Metzler, Ralf Cherstvy, Andrey G. |
dc.subject.por.fl_str_mv |
polyelectrolyte adsorption electrostatic interactions critical phenomena Debye screening |
topic |
polyelectrolyte adsorption electrostatic interactions critical phenomena Debye screening |
description |
We study the adsorption-desorption transition of polyelectrolyte chains onto planar, cylindrical and spherical surfaces with arbitrarily high surface charge densities by massive Monte Carlo computer simulations. We examine in detail how the well known scaling relations for the threshold transition demarcating the adsorbed and desorbed domains of a polyelectrolyte near weakly charged surfaces-are altered for highly charged interfaces. In virtue of high surface potentials and large surface charge densities, the Debye-Huckel approximation is often not feasible and the nonlinear Poisson-Boltzmann approach should be implemented. At low salt conditions, for instance, the electrostatic potential from the nonlinear Poisson-Boltzmann equation is smaller than the Debye-Huckel result, such that the required critical surface charge density for polyelectrolyte adsorption sigma(c) increases. The nonlinear relation between the surface charge density and electrostatic potential leads to a sharply increasing critical surface charge density with growing ionic strength, imposing an additional limit to the critical salt concentration above which no polyelectrolyte adsorption occurs at all. We contrast our simulations findings with the known scaling results for weak critical polyelectrolyte adsorption onto oppositely charged surfaces for the three standard geometries. Finally, we discuss some applications of our results for some physical-chemical and biophysical systems. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-08-18 2018-11-26T15:31:19Z 2018-11-26T15:31:19Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1088/1367-2630/18/8/083037 New Journal Of Physics. Bristol: Iop Publishing Ltd, v. 18, 17 p., 2016. 1367-2630 http://hdl.handle.net/11449/159098 10.1088/1367-2630/18/8/083037 WOS:000384011300004 WOS000384011300004.pdf |
url |
http://dx.doi.org/10.1088/1367-2630/18/8/083037 http://hdl.handle.net/11449/159098 |
identifier_str_mv |
New Journal Of Physics. Bristol: Iop Publishing Ltd, v. 18, 17 p., 2016. 1367-2630 10.1088/1367-2630/18/8/083037 WOS:000384011300004 WOS000384011300004.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
New Journal Of Physics 1,653 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
17 application/pdf |
dc.publisher.none.fl_str_mv |
Iop Publishing Ltd |
publisher.none.fl_str_mv |
Iop Publishing Ltd |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129275463729152 |