open access

https://hdl.handle.net/2115/91047

Ferroelectric Ionic Molecular Crystals with Significant Plasticity and a Low Melting Point : High Performance in Hot-Pressed Polycrystalline Plates and Melt-Grown Crystalline Sheets

英語

Molecular Crystals

2023-01-16

Wiley-Blackwell

Angewandte chemie-international edition

62(3)

e202215286

Among ferroelectric crystals based on small molecules, plastic/ferroelectric crystals are currently receiving particular attention because they can be used as bulk polycrystals. Herein, we show that an ionic molecular ferroelectric crystal, guanidinium tetrafluoroborate, exhibits significant malleability and multiaxial ferroelectricity despite the absence of a plastic crystal phase. Powder samples of this crystal can be processed into transparent bulk crystalline plates either by press-forming or by melt-growing. The plates show high ferroelectric performance and related properties, demonstrating the largest hitherto reported spontaneous polarization for bulk polycrystals of small-molecule-based ferroelectrics. Owing to the ready availability of large-scale materials and processability into various bulk crystalline forms, this ferroelectric crystal represents a highly promising functional material that will boost research on diverse applications as bulk crystals.

学術雑誌論文

Accepted Manuscript

This is the peer reviewed version of the following article: [Harada, J., Takahashi, H., Notsuka, R., Takehisa, M., Takahashi, Y., Usui, T., Taniguchi, H., Angew. Chem. Int. Ed. 2023, 62, e202215286; Angew. Chem. 2023, 135, e202215286.], which has been published in final form at https://doi.org/10.1002/anie.202215286. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.

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