Photochemistry of Lanthanide Ions-Multiphoton Chemistry via 4f Electronic Excited States-
| Project/Area Number |
23550030
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Physical chemistry
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| Research Institution | Toyota Physical and Chemical Research Institute |
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Principal Investigator |
NAKASHIMA Nobuaki 公益財団法人豊田理化学研究所, その他部局等, フェロー (00106163)
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| Co-Investigator(Renkei-kenkyūsha) |
YATSUHASHI Tomoyuki 大阪市立大学, 理学研究科, 教授 (70305613)
YAMANAKA Ken-ichi 株式会社豊田中央研究所, 研究員 (40418455)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2011: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
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| Keywords | ランタニドイオン / ２光子反応 / イッテルビウムイオン / フェムト秒 / フィラメンテーション / 鉄イオン / 2光子反応 / Yb（ＩＩＩ） / Fe(III) / Yb（III) / Yb(II) / 二光子反応 |
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| Research Abstract |
Ytterbium 3+ ions in alcohol were found to be reduced to the corresponding 2+ ions upon laser irradiation with a stepwise two-color two-photon excitation.
The infrared (975-nm) pulse with a duration of 4 ns pumps the ground state to the 4f excited state with the transition of 2F5/2-2F7/2, and the second photon (355-nm) generates the charge transfer(CT)state of Cl3d to Yb4f;the reduction then occurs. Laser energy dependencies on each color of UV and IR, and on IR wavelengths demonstrate the above mechanism. The intermediate absorption spectrum in the two-photon chemistry was measured from the 4f excited state (2F5/2) to the CT state by nanosecond laser photolysis.
The intermediate spectrum appears in the wavelengths shorter than 400 nm.The reaction yields for single- photon UV excitation and the second photon in the two-photon excitation were 0.1-0.2. These chemistries are hopefully useful for nclear waste treatment.
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Report
(4 results)
Research Products
(53 results)
