Potassium-ion-responsive chiral supramolecular hydrogels exhibiting long-range chirality transfer from D- or L-alanine to achiral frameworks

Atsuna Kondo; Hisako Sato; Akitaka Ito; Yoshiro Kondo; Shingo Hadano; Kiyonori Takahashi; Shun Dekura; Jun Manabe; Tetsu Sato; Tomoyuki Akutagawa; Takayoshi Nakamura; Sadafumi Nishihara; Masayuki Izumi; Rika Ochi

doi:10.1039/D5CC07173A

Potassium-ion-responsive chiral supramolecular hydrogels exhibiting long-range chirality transfer from d- or l-alanine to achiral frameworks

Atsuna Kondo,^a Hisako Sato,

^b Akitaka Ito,

^cd Yoshiro Kondo,^e Shingo Hadano,^afg Kiyonori Takahashi,

^h Shun Dekura,

ⁱ Jun Manabe,

^j Tetsu Sato,ⁱ Tomoyuki Akutagawa,

ⁱ Takayoshi Nakamura,^jk Sadafumi Nishihara,

^j Masayuki Izumi

^afg and Rika Ochi

*^afg

Author affiliations

* Corresponding authors

^a Graduate School of Integrated Arts and Sciences, Kochi University, 2-5-1, Akebono-cho, Kochi 780-8520, Japan
E-mail: ochi@kochi-u.ac.jp

^b Faculty of Science, Ehime University, 2-5, Bunkyo-cho, Matsuyama 790-8577, Japan

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

^d Research Center for Advanced Chiral Optical Materials (RACOMs), Kochi University of Technology, Kami, Kochi 782-8502, Japan

^e JASCO Corporation, 2967-5, Ishikawa-machi, Hachioji, Tokyo 192-8537, Japan

^f Faculty of Science and Technology, Kochi University, 2-5-1, Akebono-cho, Kochi 780-8520, Japan

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

^h Faculty of Advanced Science and Technology, Kumamoto University, 2-39-1, Kurokami, Chuo-ku, Kumamoto 860-8555, Japan

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

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

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

Abstract

Applying vibrational circular dichroism (VCD) spectroscopy, we directly reveal hydrated-state supramolecular chirality in K⁺-responsive chiral supramolecular hydrogels. Combined VCD and induced circular dichroism measurements confirmed that K⁺-triggered self-assembly enables long-range chirality transfer from a chiral D- or L-alanine residue to an otherwise achiral supramolecular framework.

Chemical Communications

Potassium-ion-responsive chiral supramolecular hydrogels exhibiting long-range chirality transfer from d- or l-alanine to achiral frameworks

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Potassium-ion-responsive chiral supramolecular hydrogels exhibiting long-range chirality transfer from D- or L-alanine to achiral frameworks

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