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Polarity and Dielectric Property Control Triggered by a Coordinated Solvent Molecule Exchange in Luminescent Mononuclear Aluminium(III) Complexes
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- Fumiya Kobayashi
- Department of Chemistry Faculty of Science Tokyo University of Science 1-3, Kagurazaka, Shinjuku-ku Tokyo 162-8601 Japan
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- Misato Gemba
- Department of Chemistry Faculty of Science Tokyo University of Science 1-3, Kagurazaka, Shinjuku-ku Tokyo 162-8601 Japan
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- Shoma Hoshino
- Department of Chemistry Faculty of Science Tokyo University of Science 1-3, Kagurazaka, Shinjuku-ku Tokyo 162-8601 Japan
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- Koichi Tsukiyama
- Department of Chemistry Faculty of Science Tokyo University of Science 1-3, Kagurazaka, Shinjuku-ku Tokyo 162-8601 Japan
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- Michito Shiotsuka
- Graduate School of Engineering Nagoya Institute of Technology Gokiso, Showa Nagoya Aichi 466-8555 Japan
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- Takashi Nakajima
- Department of Applied Physics Faculty of Science Tokyo University of Science 6-3-1, Niijuku, Katsushika-ku Tokyo 125-8585 Japan
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- Makoto Tadokoro
- Department of Chemistry Faculty of Science Tokyo University of Science 1-3, Kagurazaka, Shinjuku-ku Tokyo 162-8601 Japan
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Description
<jats:title>Abstract</jats:title><jats:p>The development of molecule‐based multifunctional switchable materials that exhibit a switch of polarity and dielectric property are extremely limited. We have demonstrated solvent‐vapour‐induced reversible molecular rearrangements between nonpolar crystals [Al(sap)(acac)(sol)] (H<jats:sub>2</jats:sub>sap=2‐salicylideneaminophenol, acac=acetylacetonate, sol=MeOH (<jats:bold>1</jats:bold>), EtOH (<jats:bold>2</jats:bold>)) and polar crystal [Al(sap)(acac)(DMSO)] (<jats:bold>3</jats:bold>). This crystal‐to‐crystal structural transformation was accompanied by a switch of second harmonic generation (SHG) and dielectric properties, including the formation of ferroelectric domains, thus reflecting the SHG‐active polar <jats:italic>Cc</jats:italic> space group of <jats:bold>3</jats:bold>. This is the first reported example of dielectric properties and polarity switching in luminescent mononuclear aluminium(III) complexes, which exhibit strong green emission in the solid state.</jats:p>
Journal
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- Chemistry – A European Journal
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Chemistry – A European Journal 29 (33), 2023-05-10
Wiley