Ultrafast water permeation through nanochannels with a densely fluorous interior surface

Itoh, Yoshimitsu, University of Tokyo, https://orcid.org/0000-0002-8356-7605

Chen, Shuo, University of Tokyo, https://orcid.org/0000-0002-0359-4831

Hirahara, Ryota, University of Tokyo

Konda, Takeshi, University of Tokyo

Aoki, Tsubasa, University of Tokyo

Ueda, Takumi, University of Tokyo, https://orcid.org/0000-0001-9677-0912

Shimada, Ichio, University of Tokyo

Cannon, James J., University of Tokyo

Shao, Cheng, University of Tokyo, https://orcid.org/0000-0002-4382-2608

Shiomi, Junichiro, University of Tokyo, https://orcid.org/0000-0002-3552-4555

Tabata, Kazuhito V., University of Tokyo, https://orcid.org/0000-0002-0463-1374

Noji, Hiroyuki, University of Tokyo, https://orcid.org/0000-0002-8842-6836

Sato, Kohei, Tokyo Institute of Technology, https://orcid.org/0000-0002-8948-8537

Aida, Takuzo, University of Tokyo, https://orcid.org/0000-0002-0002-8017

itoh@chembio.t.u-tokyo.ac.jp, schen@macro.t.u-tokyo.ac.jp, metal.babble.2001@gmail.com, konda0903@gmail.com, tsubasa-aoki@g.ecc.u-tokyo.ac.jp, ueda@nmrlab.f.u-tokyo.ac.jp, ichio.shimada@riken.jp, mail@jamescannon.net, cheng@photon.t.u-tokyo.ac.jp, shiomi@photon.t.u-tokyo.ac.jp, kazuhito@nojilab.t.u-tokyo.ac.jp, hnoji@appchem.t.u-tokyo.ac.jp, koheisato@bio.titech.ac.jp, aida@macro.t.u-tokyo.ac.jp

Publication date: August 31, 2022

Publisher: Dryad

https://doi.org/10.5061/dryad.h18931zq1

Citation

Itoh, Yoshimitsu et al. (2022), Ultrafast water permeation through nanochannels with a densely fluorous interior surface, Dryad, Dataset, https://doi.org/10.5061/dryad.h18931zq1

Abstract

Ultrafast water permeation in aquaporins is promoted by their hydrophobic interior surface. Polytetrafluoroethylene has a dense fluorine surface, leading to its strong water repellence. We report a series of fluorous oligoamide nanorings with interior diameters ranging from 0.9 to 1.9 nanometers. These nanorings undergo supramolecular polymerization in phospholipid bilayer membranes to form fluorous nanochannels, the interior walls of which are densely covered with fluorine atoms. The nanochannel with the smallest diameter exhibits a water permeation flux that is two orders of magnitude greater than those of aquaporins and carbon nanotubes. The proposed nanochannel exhibits negligible chloride ion (Cl – ) permeability caused by a powerful electrostatic barrier provided by the electrostatically negative fluorous interior surface. Thus, this nanochannel is expected to show nearly perfect salt reflectance for desalination.

Usage notes

For the detailed methods to calculate the water permeability, please refer to the Supplemental Information (https://doi.org/10.5281/zenodo.7037980).

Funding

Japan Society for the Promotion of Science, Award: 18H05260

Japan Science and Technology Agency, Award: JPMJPR21Q1

Japan Society for the Promotion of Science, Award: 21H01903