TU Darmstadt / ULB / TUbiblio

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

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

Offizielle URL: https://doi.org/10.1002/smll.201703144

Kurzbeschreibung (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.

Typ des Eintrags: Artikel
Erschienen: 2018
Autor(en): Pérez-Mitta, Gonzalo ; Marmisolle, Waldemar A. ; Burr, Loïc ; Toimil-Molares, María Eugenia ; Trautmann, Christina ; Azzaroni, Omar
Titel: Proton-Gated Rectification Regimes in Nanofluidic Diodes Switched by Chemical Effectors
Sprache: Englisch
Kurzbeschreibung (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.

Titel der Zeitschrift, Zeitung oder Schriftenreihe: Small
Band: 14
(Heft-)Nummer: 18
Verlag: Wiley-VCH Verlag GmbH, Weinheim
Freie Schlagworte: chemical actuation, ionic diodes, ionic rectification, nanofluidic devices, solid-state nanopores
Fachbereich(e)/-gebiet(e): 11 Fachbereich Material- und Geowissenschaften
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Ionenstrahlmodifizierte Materialien
Hinterlegungsdatum: 10 Dez 2018 07:38
DOI: 10.1002/smll.201703144
Offizielle URL: https://doi.org/10.1002/smll.201703144
Sponsoren: 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
Export:

Optionen (nur für Redakteure)

Eintrag anzeigen Eintrag anzeigen