| Project/Area Number |
22540371
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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 |
Condensed matter physics II
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| Research Institution | Tokyo Metropolitan University |
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Principal Investigator |
MIZOGUCHI Kenji 首都大学東京, 大学院・理工学研究科, 教授 (40087101)
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| Co-Investigator(Kenkyū-buntansha) |
SAKAMOTO Hirokazu 首都大学東京, 大学院・理工学研究科, 助教 (90187047)
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| Project Period (FY) |
2010 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2010: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | DNA / 2価金属イオン / キャリアードーピング / ESR / Pauli磁化 / 塩基πバント / ｷｬﾘｱｰﾄﾞｰﾋﾟﾝｸﾞ / 塩基πバンド / キリアードーピング / 光学吸収係数 / Id磁性鎖 |
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| Research Abstract |
We have investigated physical properties of M-DNA, where divalent metal ions M are incorporated into DNA. We found a possibility of charge carrier injection into DNA only in Fe-DNA and freeze-dried Zn-DNA. Fe3+shows both of the high spin and low spin states in Fe-DNA. In the freeze-dried Zn-DNA, where all the water molecules in hydrated Zn2+in Zn-DNA have been removed, Zn2+forms covalent bonds with surrounding nitrogen atoms in the base pair, which gives rise to a creation of the highly correlated p electron spin system. We proposed a model to interpret these interesting behaviors.
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