Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance upgrade on Thursday 4th of May 2017 from 8.00am to 9.00am (BST).

During this time our websites will be offline temporarily. If you have any questions please use the feedback button on this page. We apologise for any inconvenience this might cause and thank you for your patience.


Issue 45, 2015
Previous Article Next Article

Gas-breathing polymer film for constructing switchable ionic diodes

Author affiliations

Abstract

Carbon dioxide (CO2), as one of the major byproducts of cellular metabolism, mediates many fundamental behaviors, and its detection is associated with the activation of protein ion channels expressed on olfactory sensory neurons. Inspired by this biological phenomenon, we developed an extraordinary gas-sensitive ion channel, reconfigurable ionic diode and bionic ion pump on the basis of the growth of a gas-responsive polymer film, which can be rendered hydrophilic with CO2 stimulus and hydrophobic with N2 stimulus. In particular, by alternatively purging CO2/N2 into the solutions which are placed on both sides of the channel embedded in the polymer membrane, the smart polymer-coated channel can be either closed or opened, which is independent of voltage polarity. Most intriguingly, under asymmetric stimulation with pH pairs (pH 6.5‖pH 9.0) or with gas inputs (CO2‖N2) on both sides of the channel, a change in voltage polarity can switch the channel between a closed status and open status, leading to the construction of a reconfigurable fluidic diode. Furthermore, by combination of gas inputs and voltage polarity, each of the gates of the channel can be individually manipulated, which is a very important prerequisite for the construction of a bionic ion pump that can be operated under physiologically mild conditions. It is envisaged that this new progress in the bionic pore/channel field will hold great prospects for the application of this kind of biomimetic device for energy storage, sample filtration and seawater desalinization.

Graphical abstract: Gas-breathing polymer film for constructing switchable ionic diodes

Back to tab navigation
Please wait while Download options loads

Supplementary files

Publication details

The article was received on 03 Mar 2015, accepted on 18 Mar 2015 and first published on 18 Mar 2015


Article type: Paper
DOI: 10.1039/C5RA04712A
Citation: RSC Adv., 2015,5, 35622-35630
  •   Request permissions

    Gas-breathing polymer film for constructing switchable ionic diodes

    H. Jiang, E. Wang and J. Wang, RSC Adv., 2015, 5, 35622
    DOI: 10.1039/C5RA04712A

Search articles by author