Yameen, Basit ; Ali, Mubarak ; Neumann, Reinhard ; Ensinger, Wolfgang ; Knoll, Wolfgang ; Azzaroni, Omar (2009)
Single Conical Nanopores Displaying pH-Tunable Rectifying Characteristics. Manipulating Ionic Transport With Zwitterionic Polymer Brushes.
In: Journal of the American Chemical Society, 131 (6)
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
In this work we describe for the first time the integration of "smart" polymer brushes into single conical nanopores to obtain a new highly functional signal-responsive chemical nanodevice. The responsive brushes were constituted of zwitterionic monomers whose charge is regulated via pH changes in the environmental conditions. The pH-dependent chemical equilibrium of the monomer units provides a fine-tuning of the ionic transport though the nanopore by simply presetting the pH of the electrolyte solution. Our results demonstrate that this strategy enables a higher degree of control over the rectification properties when compared to the nanochannels modified with charged monolayer assemblies. We envision that these results will create completely new avenues to build-up "smart" nanodevices using responsive polymer brushes integrated into single conical nanopores.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2009 |
| Autor(en): | Yameen, Basit ; Ali, Mubarak ; Neumann, Reinhard ; Ensinger, Wolfgang ; Knoll, Wolfgang ; Azzaroni, Omar |
| Art des Eintrags: | Bibliographie |
| Titel: | Single Conical Nanopores Displaying pH-Tunable Rectifying Characteristics. Manipulating Ionic Transport With Zwitterionic Polymer Brushes |
| Sprache: | Englisch |
| Publikationsjahr: | 18 Februar 2009 |
| Verlag: | ACS Publications |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of the American Chemical Society |
| Jahrgang/Volume einer Zeitschrift: | 131 |
| (Heft-)Nummer: | 6 |
| URL / URN: | http://dx.doi.org/10.1021/ja8086104 |
| Kurzbeschreibung (Abstract): | In this work we describe for the first time the integration of "smart" polymer brushes into single conical nanopores to obtain a new highly functional signal-responsive chemical nanodevice. The responsive brushes were constituted of zwitterionic monomers whose charge is regulated via pH changes in the environmental conditions. The pH-dependent chemical equilibrium of the monomer units provides a fine-tuning of the ionic transport though the nanopore by simply presetting the pH of the electrolyte solution. Our results demonstrate that this strategy enables a higher degree of control over the rectification properties when compared to the nanochannels modified with charged monolayer assemblies. We envision that these results will create completely new avenues to build-up "smart" nanodevices using responsive polymer brushes integrated into single conical nanopores. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Materialanalytik 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 15 Jul 2009 12:46 |
| Letzte Änderung: | 05 Mär 2013 09:20 |
| PPN: | |
| Sponsoren: | B.Y. acknowledges support from the Higher Education Commission (HEC) of Pakistan and Deutscher Akademischer Austauschdienst (DAAD) (Code #A/04/30795)., M.A. thanks the HEC of Pakistan, on receiving partial financial support., O.A. is a CONICET fellow and acknowledges financial support from the Alexander von Humboldt Foundation, the Max Planck Society, and the Centro Interdisciplinario de Nanociencia y Nanotecnología (CINN) (ANPCyT − Argentina) |
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