Critical adsorption of polyelectrolytes onto planar and convex highly charged surfaces: the nonlinear Poisson-Boltzmann approach

Detalhes bibliográficos
Autor(a) principal: Carvalho, Sidney J. de [UNESP]
Data de Publicação: 2016
Outros Autores: Metzler, Ralf, Cherstvy, Andrey G.
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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spelling 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
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