2022 Fiscal Year Final Research Report
Molecular Ferroelectric Properties of Dynamical Molecular Assemblies
| Project/Area Number |
19H00886
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Review Section |
Medium-sized Section 32:Physical chemistry, functional solid state chemistry, and related fields
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
綱島 亮 山口大学, 大学院創成科学研究科, 准教授 (70466431)
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| Project Period (FY) |
2019-04-01 – 2023-03-31
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| Keywords | 有機強誘電体 / イオン伝導体 / 有機メモリスタ / 強弾性体 / 分子性結晶 / 液晶 / 水素結合 / ダイナミクス |
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| Outline of Final Research Achievements |
In order to establish the concept of molecular system of molecular assemblies with coexisting molecular dynamics, we aimed to understand the intermolecular interactions linking proton, ion, and molecular motions and bulk molecular properties, which will lead to device applications. As molecular ferroic materials, we focused on ferroelectrics, which are governed by electric field-polarization hysteresis, and memristors, which exhibit ionic displacement-current hysteresis. For each molecular ferroic property, we have established molecular design guidelines based on a molecular theoretical understanding of dipole inversion, domain motion, and ionic polarization, which are outputs in response to external stimuli such as electric field and stress. The diversity of design freedom of organic materials enables the creation of materials that cannot be realized with inorganic materials.
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| Free Research Field |
分子物性化学
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| Academic Significance and Societal Importance of the Research Achievements |
多様なダイナミクスを含む分子集合体の機能開拓は、これまでのスタティックな結晶格子をもとにした分子物性科学とは異なる新たな学術の創製を可能とする。生体中で見られるようなダイナミックな構造変化と連動する優れた機能性、あるいは高効率なエネルギー変換システムの実現など、分子物性科学の学理を使うことで実現可能な新規材料が実現できる。次世代の低エネルギー消費型デバイスの実現につながる研究が進展することで、今日問題となっているカーボンニュートラルやSDGsなどの直面する課題を解決する可能性を秘めている新技術で提供可能となる。
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