Issue 41, 2023
From the journal:

Journal of Materials Chemistry A

Development of liquid-crystalline smectic nanoporous membranes for the removal of SARS-CoV-2 and waterborne viruses†

Takeshi Sakamoto, ORCID logo *a   Kazuhiro Asakura,a   Naru Kang,a   Riki Kato, ORCID logo a   Miaomiao Liu,b   Tsuyoshi Hayashi,c   Hiroyuki Katayama ORCID logo *bd  and  Takashi Kato ORCID logo *ade  

* Corresponding authors

a Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Bunkyo-ku, Tokyo 113-8656, Japan
E-mail: t_saka@chembio.t.u-tokyo.ac.jp, kato@chiral.t.u-tokyo.ac.jp

b Department of Urban Engineering, School of Engineering, The University of Tokyo, Bunkyo-ku, Tokyo 113-8656, Japan
E-mail: katayama@env.t.u-tokyo.ac.jp

c Department of Virology II, National Institute of Infectious Diseases, Musashi-Murayama, Tokyo 208-0011, Japan

d Research Center for Water Environment Technology, School of Engineering, The University of Tokyo, Bunkyo-ku, Tokyo 113-8656, Japan

e Research Initiative for Supra-Materials, Shinshu University, Wakasato, Nagano 380-8553, Japan

Abstract

Obtaining safe and affordable water free from bio-contaminants is a critical global issue. Filtration using polymer membranes with nanopores is a significant method for water purification. Here, we demonstrate the fabrication of water-treatment membranes with ordered nanochannels, exhibiting significant virus removal properties, by fixing the assembled structures of ionic liquid-crystalline molecules via photopolymerization. Nanostructured water-permeable membranes are prepared from ionic liquid-crystalline smectic compounds composed of a rod-shaped rigid core to form two-dimensional nanochannels. The removal of viruses, including inactivated SARS-CoV-2, in a virus cocktail solution is investigated. Tuning of the smectic assembled structures is discussed from the perspective of self-assembled molecular structures. In addition, the effects of the ionic channel morphology on water permeability are examined.

Graphical abstract: Development of liquid-crystalline smectic nanoporous membranes for the removal of SARS-CoV-2 and waterborne viruses

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Article information

DOI
https://doi.org/10.1039/D3TA02705H
Article type
Paper
Submitted
06 May 2023
Accepted
23 Aug 2023
First published
24 Aug 2023
This article is Open Access
Creative Commons BY-NC license

J. Mater. Chem. A, 2023,11, 22178-22186

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Development of liquid-crystalline smectic nanoporous membranes for the removal of SARS-CoV-2 and waterborne viruses

T. Sakamoto, K. Asakura, N. Kang, R. Kato, M. Liu, T. Hayashi, H. Katayama and T. Kato, J. Mater. Chem. A, 2023, 11, 22178 DOI: 10.1039/D3TA02705H

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