Liquid-crystalline nanostructured membranes for CO2 separation

Takashi Kato; Kazushi Imamura; Takeshi Sakamoto; Yu Hoshino

doi:10.1039/D4CC06751G

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Liquid-crystalline nanostructured membranes for CO₂ separation†

Takashi Kato,

*^ab Kazushi Imamura,^c Takeshi Sakamoto

^a and Yu Hoshino*^c

Author affiliations

* Corresponding authors

^a Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
E-mail: kato@chiral.t.u-tokyo.ac.jp

^b Institute for Aqua Regeneration, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan

^c Department of Applied Chemistry, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
E-mail: hoshino.yu.673@m.kyushu-u.ac.jp

Abstract

We report herein that self-organized subnanoporous membranes prepared from ionic liquid-crystalline (LC) compounds exhibit CO₂ separation properties (αCO₂/N₂ ≈ 60) in humid conditions. A bicontinuous cubic (Cub_bi) LC film shows N₂ barrier properties, whereas the CO₂ permeability is kept as permeable.

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Article information

DOI: https://doi.org/10.1039/D4CC06751G
Article type: Communication
Submitted: 27 Dec 2024
Accepted: 05 Feb 2025
First published: 06 Feb 2025
This article is Open Access

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Chem. Commun., 2025,61, 3998-4001

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Liquid-crystalline nanostructured membranes for CO₂ separation

T. Kato, K. Imamura, T. Sakamoto and Y. Hoshino, Chem. Commun., 2025, 61, 3998 DOI: 10.1039/D4CC06751G

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