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Selective Ion Exchange in Supramolecular Channels in the Crystalline State
Author(s) -
Ichihashi Katsuya,
Konno Daisuke,
Maryunina Kseniya Yu.,
Inoue Katsuya,
Toyoda Kazuhiro,
Kawaguchi Shogo,
Kubota Yoshiki,
Tatewaki Yoko,
Akutagawa Tomoyuki,
Nakamura Takayoshi,
Nishihara Sadafumi
Publication year - 2019
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201813709
Subject(s) - ion exchange , ion , supramolecular chemistry , ion transporter , chemistry , aqueous solution , ion channel , nanotechnology , materials science , inorganic chemistry , chemical physics , crystallography , crystal structure , organic chemistry , biochemistry , receptor
Artificial ion channels are of increasing interest because of potential applications in biomimetics, for example, for realizing selective ion permeability through the transport and/or exchange of selected ions. However, selective ion transport and/or exchange in the crystalline state is rare, and to the best of our knowledge, such a process has not been successfully combined with changes in the physical properties of a material. Herein, by soaking single crystals of Li 2 ([18]crown‐6) 3 [Ni(dmit) 2 ] 2 (H 2 O) 4 ( 1 ) in an aqueous solution containing K + , we succeeded in complete ion exchange of the Li + ions in 1 with K + ions in the solution, while maintaining the crystalline state of the material. This ion exchange with K + was selectively conducted even in mixed solutions containing K + as well as Na + /Li + . Furthermore, remarkable changes in the physical properties of 1 resulted from the ion exchange. Our finding enables not only the realization of selective ion permeability but also the development of highly sensitive biosensors and futuristic ion exchange agents, for example.