A proposal on the mechanism for spin-alignment by a conduction electron
| Project/Area Number |
21550047
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Organic chemistry
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| Research Institution | Yokohama City University |
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Principal Investigator |
TSUKADA Hideyuki 横浜市立大学, 生命ナノシステム科学研究科, 教授 (40171970)
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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 |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2009: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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| Keywords | 物理有機化学 / ラジカル / スピン / ESR / 分子磁性 / 高スピン / ニトロキシド / 有機化学 / 有機磁性 / 酸化還元 / 共役系 |
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| Research Abstract |
We proposed here a new mechanism for spin-alignment in organic p-conjugated molecules having pendant radicals. When the main chain was 1-electron reduced(or oxidized) to give a conduction electron which interact with the pendant spins to align all pendant spins parallel. In other words, these p-conjugated polyradicals have response functionality to change molecular magnetic property upon 1-electron(or hole) doping. DFT calculations for some conjugated diradicals as well as their oxidized states were performed, and energy differences between singlet-triplet states in neutral diradicals or between doublet and quartet states in ionic diradicals were calculated. The results showed the spin alignment can be achieved. We also prepared di(nitronylnitroxide)-diradicals bearing a hydroquinone(or quinine) skeleton.
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Report
(4 results)
Research Products
(5 results)
