Yameen, Basit and Ali, Mubarak and Neumann, Reinhard and Ensinger, Wolfgang and Knoll, Wolfgang and 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), pp. 2070-2071. ACS Publications, [Article]
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.
Item Type: | Article |
---|---|
Erschienen: | 2009 |
Creators: | Yameen, Basit and Ali, Mubarak and Neumann, Reinhard and Ensinger, Wolfgang and Knoll, Wolfgang and Azzaroni, Omar |
Title: | Single Conical Nanopores Displaying pH-Tunable Rectifying Characteristics. Manipulating Ionic Transport With Zwitterionic Polymer Brushes |
Language: | English |
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. |
Journal or Publication Title: | Journal of the American Chemical Society |
Journal volume: | 131 |
Number: | 6 |
Publisher: | ACS Publications |
Divisions: | 11 Department of Materials and Earth Sciences > Material Science > Material Analytics 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences |
Date Deposited: | 15 Jul 2009 12:46 |
Official URL: | http://dx.doi.org/10.1021/ja8086104 |
Funders: | 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) |
Export: | |
Suche nach Titel in: | TUfind oder in Google |
![]() |
Send an inquiry |
Options (only for editors)
![]() |
Show editorial Details |