Issue 87, 2025
From the journal:

Chemical Communications

Multistage control of near-infrared and magnetic properties via π-dimer modulation in TCNQ radical anion salts

Ruifeng Shu,a   Takeshi Naota, ORCID logo a   Daisuke Shiomi ORCID logo *b  and  Shuichi Suzuki ORCID logo *a  

* Corresponding authors

a Department of Chemistry, Graduate School of Engineering Science, The University of Osaka, Toyonaka, Osaka 560-8531, Japan
E-mail: suzuki.shuichi.es@osaka-u.ac.jp

b Department of Chemistry, Graduate School of Science, Osaka Metropolitan University, Sumiyoshi-ku, Osaka, Osaka 558-8585, Japan
E-mail: daisukeshiomi@omu.ac.jp

Abstract

We report a liquescent 7,7,8,8-tetracyanoquinodimethane radical anion (TCNQ˙−) salt with an N,N′-di-n-octylimidazolium ion that exhibits unprecedented three-stage switching of magnetic and NIR-II absorption properties upon thermal stimulation. This behavior originates from stepwise transformations between co-facial and slipped-stacking π-dimers and monomeric TCNQ˙− species.

Graphical abstract: Multistage control of near-infrared and magnetic properties via π-dimer modulation in TCNQ radical anion salts

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Article information

DOI
https://doi.org/10.1039/D5CC04915F
Article type
Communication
Submitted
26 Aug 2025
Accepted
23 Sep 2025
First published
30 Sep 2025

Chem. Commun., 2025,61, 17021-17024

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Multistage control of near-infrared and magnetic properties via π-dimer modulation in TCNQ radical anion salts

R. Shu, T. Naota, D. Shiomi and S. Suzuki, Chem. Commun., 2025, 61, 17021 DOI: 10.1039/D5CC04915F

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