| Project/Area Number |
16350034
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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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| Research Field |
Inorganic chemistry
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| Research Institution | Tokyo University of Science (2005)
Osaka City University (2004) |
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Principal Investigator |
TADOKORO Makoto Tokyo University of Science, Faculty of Science, Department of Chemistry, Associate professor, 理学部化学科, 助教授 (60249951)
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| Co-Investigator(Kenkyū-buntansha) |
岡田 恵次 大阪市立大学, 大学院・理学研究科, 教授 (50152301)
小嵜 正敏 大阪市立大学, 大学院・理学研究科, 講師 (10295678)
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| Project Period (FY) |
2004 – 2005
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| Project Status |
Completed (Fiscal Year 2005)
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| Budget Amount *help |
¥14,700,000 (Direct Cost: ¥14,700,000)
Fiscal Year 2005: ¥4,000,000 (Direct Cost: ¥4,000,000)
Fiscal Year 2004: ¥10,700,000 (Direct Cost: ¥10,700,000)
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| Keywords | supramolecular chemistry / water cluster / phase transition / hydrogen bond / porous crystal / metal complex / zeolite / proton conductivity / 氷 / ポーラスクリスタル / クリスタルエンジニアリング / 超分子結晶 |
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| Research Abstract |
Theoretical and experimental studies of dynamics and structures on water clusters confined to nanometer-scale surroundings have revealed them to be the unique characters different from the nature of bulk water and ice under the ambient pressure. we have fixed manometer-scale water clusters into the porous crystal formed from the designed molecular blocks to find the molecular dynamics of the confined water with a strong interaction to the outer walls. The X-ray analysis for a filled crystal with water molecules in nanometer-scale channels has demonstrated that the structure of the water clusters consists of infinite cylindrical chains (a water nano-tube) confined to one-dimensional channels. The hierarchical ice nano-tube exhibits the dynamics like a hierarchical water-ice transition, which is occurred at the hydrogen-bonded water molecules existing around the center of the channels in spite of a single crystal.
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