| Project/Area Number |
17K19102
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| Research Category |
Grant-in-Aid for Challenging Research (Exploratory)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Physical chemistry, Functional solid state chemistry, and related fields
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| Research Institution | Osaka University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
鈴木 晴 近畿大学, 理工学部, 講師 (50633559)
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| Project Period (FY) |
2017-06-30 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
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| Keywords | 周回イオン常磁性 / フラーレン / 磁気共鳴 / 強磁場 / テラヘルツ分光 / 回転スペクトル / orbiting-ion paramagnet / endofullerene / magnetic resonance / lithium cation / ionic crystal |
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| Outline of Final Research Achievements |
Endohedral lithium(+) fullerene [Li+@C60](PF6)- is an ionic crystalline substance, in which the lithium ion encaged in a C60 inner space enjoys almost free orbital motion at room temperature. The motion of positively-charged lithium ion should be regarded as a ring current associated with a magnetic moment. Such magnetism of molecular species is a completely novel concept and not reported yet for crystalline substances. We temporally named it “orbiting-ion paramagnetism” and tried to clarify this interesting property. In this project, the detection of magnetic resonance signal due to “orbiting-ion paramagnetism” in [Li+@C60](PF6)- under very strong field was attempted, but failed in a series of preliminary measurements.
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| Academic Significance and Societal Importance of the Research Achievements |
本研究では，これまでに知られている，核スピンや電子スピン，電子の軌道運動に起因する磁性などとはまったく異なる，「周回イオン常磁性」をターゲットとした．イオンの周回運動が環電流として磁気モーメントを発生する「周回イオン常磁性」が確立されれば，極めて新奇性の高い磁性材料の可能性を与えるとともに，人類の普遍的な知的財産として分子磁性の教科書のページを占めるものと考えている．
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