Dynamic Nuclear Polarization by Electron Spins in the Photo-excited Triplet State(2)High Polarization of the Residual Protons in Deuterated Naphthalene
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- Takeda Kazuyuki
- Department of Chemistry, Graduate School of Science, Kyoto University
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- Takegoshi K.
- Department of Chemistry, Graduate School of Science, Kyoto University
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- Terao Takehiko
- Department of Chemistry, Graduate School of Science, Kyoto University
書誌事項
- タイトル別名
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- Dynamic Nuclear Polarization by Electron Spins in the Photoexcited Triplet State: II. High Polarization of the Residual Protons in Deuterated Naphthalene
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説明
Experiments of dynamic nuclear polarization by electron spins in the photoexcited triplet state were made using single crystal and polycrystalline samples of 99.21%-deuterated naphthalene doped with 0.015 mol% pentacene. In the single crystal sample, the polarization of the residual protons was built up to 0.7 at 105 K, reaching the ultimate polarization equal to the photo-induced electron spin polarization. A doublet due to the two protons which happen to be adjacent to each other in a deuterated naphthalene molecule was observed in the single crystal under deuteron double-quantum decoupling; it exhibits polarization-induced asymmetry when observed by a small-tip angle pulse. In the polycrystalline sample the resultant 1H polarization was 0.033. The 1H NMR lineshape under deuteron decoupling in the single crystal and the inhomogeneous 1H distribution in a deuterated naphthalene molecule are discussed.
収録刊行物
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- Ｊｏｕｒｎａｌ ｏｆ ｔｈｅ Ｐｈｙｓｉｃａｌ Ｓｏｃｉｅｔｙ ｏｆ Ｊａｐａｎ
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Ｊｏｕｒｎａｌ ｏｆ ｔｈｅ Ｐｈｙｓｉｃａｌ Ｓｏｃｉｅｔｙ ｏｆ Ｊａｐａｎ 73 (8), 2319-2322, 2004
一般社団法人 日本物理学会
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詳細情報 詳細情報について
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- CRID
- 1390282679163729792
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- NII論文ID
- 210000104994
- 110001954972
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- NII書誌ID
- AA00704814
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- BIBCODE
- 2004JPSJ...73.2319T
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- ISSN
- 13474073
- 00319015
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- NDL書誌ID
- 7052344
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- 本文言語コード
- en
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