The Influence of Divalent Anions on the Rectification Properties of Nanofluidic Diodes: Insights from Experiments and Theoretical Simulations

During the last decade, the possibility of generating synthetic nanoarchitectures with functionalities comparable to biological entities has sparked the interest of the scientific community related to diverse research fields. In this context, gaining fundamental understanding of the central features...

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Autores principales: Pérez Mitta, Gonzalo, Albesa, Alberto Gustavo, Toimil Molares, María Eugenia, Trautmann, Christina, Azzaroni, Omar
Formato: Articulo
Lenguaje:Inglés
Publicado: 2016
Materias:
Física
Química
ion track-etched nanopores
ionic rectifiers
nanofluidic diodes
Poisson–Nernst–Planck formalism
solid-state nanopores
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/151264
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-151264
record_format dspace
spelling I19-R120-10915-1512642023-04-10T20:32:34Z http://sedici.unlp.edu.ar/handle/10915/151264 issn:1439-4235 issn:1439-7641 The Influence of Divalent Anions on the Rectification Properties of Nanofluidic Diodes: Insights from Experiments and Theoretical Simulations Pérez Mitta, Gonzalo Albesa, Alberto Gustavo Toimil Molares, María Eugenia Trautmann, Christina Azzaroni, Omar 2016-09 2023-04-10T19:05:55Z en Física Química ion track-etched nanopores ionic rectifiers nanofluidic diodes Poisson–Nernst–Planck formalism solid-state nanopores During the last decade, the possibility of generating synthetic nanoarchitectures with functionalities comparable to biological entities has sparked the interest of the scientific community related to diverse research fields. In this context, gaining fundamental understanding of the central features that determine the rectifying characteristics of the conical nanopores is of mandatory importance. In this work, we analyze the influence of mono- and divalent salts in the ionic current transported by asymmetric nanopores and focus on the delicate interplay between ion exclusion and charge screening effects that govern the functional response of the nanofluidic device. Experiments were performed using KCl and K₂SO₄ as representative species of singly and doubly charged species. Results showed that higher currents and rectification efficiencies are achieved by doubly charged salts. In order to understand the physicochemical processes underlying these effects simulations using the Poisson-Nernst-Planck formalism were performed. We consider that our theoretical and experimental account of the effect of divalent anions in the functional response of nanofluidic diodes provides further insights into the critical role of electrostatic interactions (ion exclusion versus charge screening effects) in presetting the ionic selectivity to anions as well as the observed rectification properties of these chemical nanodevices. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas Articulo Articulo http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) application/pdf 2718-2725
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Química
ion track-etched nanopores
ionic rectifiers
nanofluidic diodes
Poisson–Nernst–Planck formalism
solid-state nanopores
spellingShingle Física
Química
ion track-etched nanopores
ionic rectifiers
nanofluidic diodes
Poisson–Nernst–Planck formalism
solid-state nanopores
Pérez Mitta, Gonzalo
Albesa, Alberto Gustavo
Toimil Molares, María Eugenia
Trautmann, Christina
Azzaroni, Omar
The Influence of Divalent Anions on the Rectification Properties of Nanofluidic Diodes: Insights from Experiments and Theoretical Simulations
topic_facet Física
Química
ion track-etched nanopores
ionic rectifiers
nanofluidic diodes
Poisson–Nernst–Planck formalism
solid-state nanopores
description During the last decade, the possibility of generating synthetic nanoarchitectures with functionalities comparable to biological entities has sparked the interest of the scientific community related to diverse research fields. In this context, gaining fundamental understanding of the central features that determine the rectifying characteristics of the conical nanopores is of mandatory importance. In this work, we analyze the influence of mono- and divalent salts in the ionic current transported by asymmetric nanopores and focus on the delicate interplay between ion exclusion and charge screening effects that govern the functional response of the nanofluidic device. Experiments were performed using KCl and K₂SO₄ as representative species of singly and doubly charged species. Results showed that higher currents and rectification efficiencies are achieved by doubly charged salts. In order to understand the physicochemical processes underlying these effects simulations using the Poisson-Nernst-Planck formalism were performed. We consider that our theoretical and experimental account of the effect of divalent anions in the functional response of nanofluidic diodes provides further insights into the critical role of electrostatic interactions (ion exclusion versus charge screening effects) in presetting the ionic selectivity to anions as well as the observed rectification properties of these chemical nanodevices.
format Articulo
Articulo
author Pérez Mitta, Gonzalo
Albesa, Alberto Gustavo
Toimil Molares, María Eugenia
Trautmann, Christina
Azzaroni, Omar
author_facet Pérez Mitta, Gonzalo
Albesa, Alberto Gustavo
Toimil Molares, María Eugenia
Trautmann, Christina
Azzaroni, Omar
author_sort Pérez Mitta, Gonzalo
title The Influence of Divalent Anions on the Rectification Properties of Nanofluidic Diodes: Insights from Experiments and Theoretical Simulations
title_short The Influence of Divalent Anions on the Rectification Properties of Nanofluidic Diodes: Insights from Experiments and Theoretical Simulations
title_full The Influence of Divalent Anions on the Rectification Properties of Nanofluidic Diodes: Insights from Experiments and Theoretical Simulations
title_fullStr The Influence of Divalent Anions on the Rectification Properties of Nanofluidic Diodes: Insights from Experiments and Theoretical Simulations
title_full_unstemmed The Influence of Divalent Anions on the Rectification Properties of Nanofluidic Diodes: Insights from Experiments and Theoretical Simulations
title_sort influence of divalent anions on the rectification properties of nanofluidic diodes: insights from experiments and theoretical simulations
publishDate 2016
url http://sedici.unlp.edu.ar/handle/10915/151264
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