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

Soft Matter. 2024 Oct 23;20(41):8170-8173. doi: 10.1039/d4sm00906a.

Authors

Yuta Chabatake¹, Tomoki Tanigawa², Yuto Hirayama², Ryo Taniguchi¹, Akitaka Ito^{3

4}, Kiyonori Takahashi⁵, Shin-Ichiro Noro⁶, Tomoyuki Akutagawa⁷, Takayoshi Nakamura^{5

8}, Masayuki Izumi^{1

2

9}, Rika Ochi^{1

2

9}

Affiliations

¹ Faculty of Science and Technology, Kochi University, 2-5-1, Akebono-cho, Kochi 780-8520, Japan. ochi@kochi-u.ac.jp.
² Graduate School of Integrated Arts and Sciences, 2-5-1, Akebono-cho, Kochi 780-8520, Japan.
³ School of Engineering Science, Kochi University of Technology, Kami, Kochi 782-8502, Japan.
⁴ Research Center for Molecular Design, Kochi University of Technology, Kami, Kochi 782-8502, Japan.
⁵ Research Institute for Electronic Science (RIES), Hokkaido University, N20W10, Kita-ku, Sapporo 001-0020, Japan.
⁶ Faculty of Environmental Earth Science, Hokkaido University, Sapporo 060-0810, Japan.
⁷ Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan.
⁸ Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-3-1, Kagamiyama, Higashi-hiroshima 739-8526, Japan.
⁹ Research and Education Faculty, Kochi University, 2-5-1, Akebono-cho, Kochi 780-8520, Japan.

PMID: 39291588
DOI: 10.1039/d4sm00906a

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.