Dielectric Anomaly and Structural Transition of Guest Molecules Incorporated in Nanoporous Crystals
| Project/Area Number |
21750153
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Functional materials chemistry
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| Research Institution | Nihon University |
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Principal Investigator |
ZHOU Biao 日本大学, 文理学部, 助教 (80434067)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2011: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2009: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | ポーラス結晶 / 誘電性物質 / ゲスト分子 / 分子運動の自由度 / 誘電性 / リングパッカリング振動 / リラクサー / 有機ペロブスカイト / 擬似液体-固体転移 |
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| Research Abstract |
Guest water molecules confined in channels of porous crystals [Cu_3La_2(IDA)_6](H_2O)_n exhibited antiferroelectric behaviors at high temperatures, and dielectric constants(ε) became very small at around 170 K. These puzzling temperature dependences ofεare consistent with the results of molecular dynamics simulations. And, metal-organic perovskite with four-membered ring azetidinium cations, [(CH_2)_3NH_2][Cu(HCOO)_3] exhibited a very broad and unprecedentedly large dielectric peak(～7×10^5 at 1 kHz) near 280 K. It is highly possible related to the ring-puckering instability of the four-membered ring ammonium cation.
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Report
(4 results)
Research Products
(38 results)
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[Presentation] Dielectric Properties of Water Molecules in Porous Crystal, [Ln_2Cu_3(IDA)_6]・nH_2O(Ln=La, Nd, Sm, Gd, Ho, Er; n〓9.3)2011
Author(s)
B.Zhou, A.Kobayashi, H.Kobayashi
Organizer
The 9th International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets
Place of Presentation
Poznan, Poland
Related Report
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