Ferroelectric columnar assemblies from the bowl-to-bowl inversion of aromatic cores

Shunsuke Furukawa (), Jianyun Wu, Masaya Koyama, Keisuke Hayashi, Norihisa Hoshino, Takashi Takeda, Yasutaka Suzuki, Jun Kawamata, Masaichi Saito () and Tomoyuki Akutagawa ()
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Shunsuke Furukawa: Saitama University
Jianyun Wu: Tohoku University
Masaya Koyama: Saitama University
Keisuke Hayashi: Saitama University
Norihisa Hoshino: Tohoku University
Takashi Takeda: Tohoku University
Yasutaka Suzuki: Yamaguchi University
Jun Kawamata: Yamaguchi University
Masaichi Saito: Saitama University
Tomoyuki Akutagawa: Tohoku University

Nature Communications, 2021, vol. 12, issue 1, 1-9

Abstract: Abstract Organic ferroelectrics, in which the constituent molecules retain remanent polarization, represent an important topic in condensed-matter science, and their attractive properties, which include lightness, flexibility, and non-toxicity, are of potential use in state-of-the-art ferroelectric devices. However, the mechanisms for the generation of ferroelectricity in such organic compounds remain limited to a few representative concepts, which has hitherto severely hampered progress in this area. Here, we demonstrate that a bowl-to-bowl inversion of a relatively small organic molecule with a bowl-shaped π-aromatic core generates ferroelectric dipole relaxation. The present results thus reveal an unprecedented concept to produce ferroelectricity in small organic molecules, which can be expected to strongly impact materials science.

Date: 2021
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DOI: 10.1038/s41467-021-21019-4

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