Control of Molecular Arrangement in Crystals and Functional Exploration Using Supramolecular Structures
| Project/Area Number |
18H01949
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Review Section |
Basic Section 32020:Functional solid state chemistry-related
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| Research Institution | Hokkaido University |
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Principal Investigator |
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| Project Period (FY) |
2018-04-01 – 2022-03-31
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| Project Status |
Completed (Fiscal Year 2021)
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| Budget Amount *help |
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2021: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2020: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2019: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2018: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
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| Keywords | 超分子 / 誘電性 / 極性結晶 / 磁性 / マルチフェロイック / プロトン移動 |
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| Outline of Final Research Achievements |
In crystalline molecular materials, not only the structure and electronic state of individual molecules, but also the molecular arrangement within the crystal is the root of functional expression. The molecular arrangement within a crystal is fundamentally determined by intermolecular interactions. Supramolecular structures are generated when multiple molecules assemble through intermolecular interactions. Therefore, it is natural to design crystals using supramolecular structures as a starting point. In this study, we constructed a dynamic space of molecules using extremely flexible supramolecular structures while utilizing the symmetry of crystals, and developed functionalities, such as ferroelectricity, that are manifested by the dynamic processes of molecules in crystals. The validity and universality of this approach were clearly demonstrated.
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| Academic Significance and Societal Importance of the Research Achievements |
分極反転を伴う強誘電転移、結晶内でのプロトン移動に基づくイオン伝導、結晶内でのトポケミカル反応による絶対不斉合成、固相フォトクロミズムなど、結晶内のイオンや分子の動的過程に着目した機能開拓は極めて重要な科学技術分野を形成する。これら機能の発現には、結晶内において分子やイオンの動的な空間を確保する必要があり、物質開発のネックとなっている。本研究は、フレキシブルな超分子構造を利用して、動的空間を有する分子集合構造を結晶内において自在に構築し、結晶の対称性と結晶内での分子の動的過程を制御すできることを示した。本手法により、誘電性・磁性・光機能等、多様な物性・機能を開拓することが可能となる。
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Report
(5 results)
Research Products
(50 results)
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[Journal Article] Selective Ion Exchange in Supramolecular Channels in the Crystalline State2019
Author(s)
Katsuya Ichihashi, Daisuke Konno, Kseniya Yu. Maryunina, Katsuya Inoue, Kazuhiro Toyoda, Shogo Kawaguchi, Yoshiki Kubota, Yoko Tatewaki, Tomoyuki Akutagawa, Takayoshi Nakamura, and Sadafumi Nishihara
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Journal Title
Angew. Chem. Int. Ed.
Volume: 58
Issue: 13
Pages: 4169-4172
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Optimizing Lithium Ion Conduction through Crown Ether-Based Cylindrical Channels in [Ni(dmit)2]－ Salts2018
Author(s)
Katsuya Ichihashi, Daisuke Konno, Takuya Date, Takumi Nishimura, Kseniya Yu. Maryunina, Katsuya Inoue, Toshimi Nakaya, Kazuhiro Toyoda, Yoko Tatewaki, Tomoyuki Akutagawa, Takayoshi Nakamura, Sadafumi Nishihara,
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Journal Title
Chem. Mater
Volume: 30
Issue: 20
Pages: 7130-7137
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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