A 15-crown-5-ether-based supramolecular hydrogel with selection ability for potassium cations via gelation and colour change

Yuta Chabatake; Tomoki Tanigawa; Yuto Hirayama; Ryo Taniguchi; Akitaka Ito; Kiyonori Takahashi; Shin-ichiro Noro; Tomoyuki Akutagawa; Takayoshi Nakamura; Masayuki Izumi; Rika Ochi

doi:10.1039/D4SM00906A

A 15-crown-5-ether-based supramolecular hydrogel with selection ability for potassium cations via gelation and colour change†

Yuta Chabatake,^a Tomoki Tanigawa,^b Yuto Hirayama,^b Ryo Taniguchi,^a Akitaka Ito,

^cd Kiyonori Takahashi,

^e Shin-ichiro Noro,

^f Tomoyuki Akutagawa,

^g Takayoshi Nakamura,^eh Masayuki Izumi

^abi and Rika Ochi

*^abi

Author affiliations

* Corresponding authors

^a Faculty of Science and Technology, Kochi University, 2-5-1, Akebono-cho, Kochi 780-8520, Japan
E-mail: ochi@kochi-u.ac.jp

^b Graduate School of Integrated Arts and Sciences, 2-5-1, Akebono-cho, Kochi 780-8520, Japan

^c School of Engineering Science, Kochi University of Technology, Kami, Kochi 782-8502, Japan

^d Research Center for Molecular Design, Kochi University of Technology, Kami, Kochi 782-8502, Japan

^e Research Institute for Electronic Science (RIES), Hokkaido University, N20W10, Kita-ku, Sapporo 001-0020, Japan

^f Faculty of Environmental Earth Science, Hokkaido University, Sapporo 060-0810, Japan

^g Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan

^h Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-3-1, Kagamiyama, Higashi-hiroshima 739-8526, Japan

ⁱ Research and Education Faculty, Kochi University, 2-5-1, Akebono-cho, Kochi 780-8520, Japan

Abstract

We developed a novel supramolecular hydrogelator possessing a benzo-15-crown-5 (B15C5) moiety. The hydrogelator can detect colourless potassium cations (K⁺) via easily readable gelation and colour change arising from a change in the molecular assembling ability through host–guest interactions between B15C5 and K⁺, which afford a B15C5/K⁺/B15C5 sandwich complex.

Soft Matter

A 15-crown-5-ether-based supramolecular hydrogel with selection ability for potassium cations via gelation and colour change†

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A 15-crown-5-ether-based supramolecular hydrogel with selection ability for potassium cations via gelation and colour change

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