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An All-Plastic Field-Effect Nanofluidic Diode Gated by a Conducting Polymer Layer

Pérez-Mitta, Gonzalo and Marmisollé, Waldemar A. and Trautmann, Christina and Toimil-Molares, María Eugenia and Azzaroni, Omar (2017):
An All-Plastic Field-Effect Nanofluidic Diode Gated by a Conducting Polymer Layer.
In: Advanced Materials, Wiley, p. 1700972, 29, (28), ISSN 09359648,
DOI: 10.1002/adma.201700972,
[Online-Edition: https://doi.org/10.1002/adma.201700972],
[Article]

Abstract

The design of an all-plastic field-effect nanofluidic diode is proposed, which allows precise nanofluidic operations to be performed. The fabrication process involves the chemical synthesis of a conductive poly(3,4-ethylenedioxythiophene) (PEDOT) layer over a previously fabricated solid-state nanopore. The conducting layer acts as gate electrode by changing its electrochemical state upon the application of different voltages, ultimately changing the surface charge of the nanopore. A PEDOT-based nanopore is able to discriminate the ionic species passing through it in a quantitative and qualitative manner, as PEDOT nanopores display three well-defined voltage-controlled transport regimes: cation-rectifying, non-rectifying, and anion rectifying regimes. This work illustrates the potential and versatility of PEDOT as a key enabler to achieve electrochemically addressable solid-state nanopores. The synergism arising from the combination of highly functional conducting polymers and the remarkable physical characteristics of asymmetric nanopores is believed to offer a promising framework to explore new design concepts in nanofluidic devices.

Item Type: Article
Erschienen: 2017
Creators: Pérez-Mitta, Gonzalo and Marmisollé, Waldemar A. and Trautmann, Christina and Toimil-Molares, María Eugenia and Azzaroni, Omar
Title: An All-Plastic Field-Effect Nanofluidic Diode Gated by a Conducting Polymer Layer
Language: English
Abstract:

The design of an all-plastic field-effect nanofluidic diode is proposed, which allows precise nanofluidic operations to be performed. The fabrication process involves the chemical synthesis of a conductive poly(3,4-ethylenedioxythiophene) (PEDOT) layer over a previously fabricated solid-state nanopore. The conducting layer acts as gate electrode by changing its electrochemical state upon the application of different voltages, ultimately changing the surface charge of the nanopore. A PEDOT-based nanopore is able to discriminate the ionic species passing through it in a quantitative and qualitative manner, as PEDOT nanopores display three well-defined voltage-controlled transport regimes: cation-rectifying, non-rectifying, and anion rectifying regimes. This work illustrates the potential and versatility of PEDOT as a key enabler to achieve electrochemically addressable solid-state nanopores. The synergism arising from the combination of highly functional conducting polymers and the remarkable physical characteristics of asymmetric nanopores is believed to offer a promising framework to explore new design concepts in nanofluidic devices.

Journal or Publication Title: Advanced Materials
Volume: 29
Number: 28
Publisher: Wiley
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Ion-Beam-Modified Materials
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 29 Dec 2017 12:26
DOI: 10.1002/adma.201700972
Official URL: https://doi.org/10.1002/adma.201700972
Additional Information:

Dedicated to Professor Roberto Salvarezza on the occasion of his 65th birthday

Funders: Funded by ANPCyT. Grant Numbers: PICT 2010–2554, PICT-2013-0905, Funded by Deutsche Forschungsgemeinschaft. Grant Number: DFG-FOR 1583, Funded by Hessen State Ministry of Higher Education, Research and Arts
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