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Proton-Gated Rectification Regimes in Nanofluidic Diodes Switched by Chemical Effectors

Pérez-Mitta, Gonzalo and Marmisolle, Waldemar A. and Burr, Loïc and Toimil-Molares, María Eugenia and Trautmann, Christina and Azzaroni, Omar (2018):
Proton-Gated Rectification Regimes in Nanofluidic Diodes Switched by Chemical Effectors.
In: Small, Wiley-VCH Verlag GmbH, Weinheim, p. 1703144, 14, (18), ISSN 16136810,
DOI: 10.1002/smll.201703144,
[Online-Edition: https://doi.org/10.1002/smll.201703144],
[Article]

Abstract

During the last decade, nanofluidic devices based on solid‐state nanopores and nanochannels have come into scene in materials science and will not leave anytime soon. One of the main reasons for this is the excellent control over ionic transport exerted by such devices that promises further important advances when integrated into more complex molecular devices. As a result, pH, temperature, and voltage‐regulated devices have been obtained. However, nowadays, there is still a necessity for molecule‐driven nanofluidic devices. Here, a sugar‐regulated pH‐responsive nanofluidic diode is presented obtained by surface modification of conical polycarbonate nanochannels with electropolymerized 3‐aminophenylboronic acid. Control over the ionic transport has been achieved by a successful decoration of asymmetric nanochannels with integrated molecular systems. The as‐synthesized boronate‐appended zwitterionic polymer exhibits an acid‐base equilibrium that depends on the concentration of sugar, which ultimately acts as a chemical effector setting different pH‐dependent rectification regimes. As a result, the same nanodevice can perform completely different proton‐regulated nanofluidic operations, i.e., anion‐driven rectification, cation‐driven rectification, and no rectification, by simply varying the concentration of fructose in the electrolyte solution.

Item Type: Article
Erschienen: 2018
Creators: Pérez-Mitta, Gonzalo and Marmisolle, Waldemar A. and Burr, Loïc and Toimil-Molares, María Eugenia and Trautmann, Christina and Azzaroni, Omar
Title: Proton-Gated Rectification Regimes in Nanofluidic Diodes Switched by Chemical Effectors
Language: English
Abstract:

During the last decade, nanofluidic devices based on solid‐state nanopores and nanochannels have come into scene in materials science and will not leave anytime soon. One of the main reasons for this is the excellent control over ionic transport exerted by such devices that promises further important advances when integrated into more complex molecular devices. As a result, pH, temperature, and voltage‐regulated devices have been obtained. However, nowadays, there is still a necessity for molecule‐driven nanofluidic devices. Here, a sugar‐regulated pH‐responsive nanofluidic diode is presented obtained by surface modification of conical polycarbonate nanochannels with electropolymerized 3‐aminophenylboronic acid. Control over the ionic transport has been achieved by a successful decoration of asymmetric nanochannels with integrated molecular systems. The as‐synthesized boronate‐appended zwitterionic polymer exhibits an acid‐base equilibrium that depends on the concentration of sugar, which ultimately acts as a chemical effector setting different pH‐dependent rectification regimes. As a result, the same nanodevice can perform completely different proton‐regulated nanofluidic operations, i.e., anion‐driven rectification, cation‐driven rectification, and no rectification, by simply varying the concentration of fructose in the electrolyte solution.

Journal or Publication Title: Small
Volume: 14
Number: 18
Publisher: Wiley-VCH Verlag GmbH, Weinheim
Uncontrolled Keywords: chemical actuation, ionic diodes, ionic rectification, nanofluidic devices, solid-state nanopores
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Ion-Beam-Modified Materials
Date Deposited: 10 Dec 2018 07:38
DOI: 10.1002/smll.201703144
Official URL: https://doi.org/10.1002/smll.201703144
Funders: ANPCyT. Grant Numbers: PICT 2010‐2554, PICT‐2013‐0905, PPL 2011‐003, Deutsche Forschungsgemeinschaft. Grant Number: DFG‐FOR 1583, Hessen State Ministry of Higher Education
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