WEKO3
アイテム
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13C pulsed dynamic nuclear polarization using pentacene or NV- centers in diamond at room temperature
https://repo.qst.go.jp/records/82154
https://repo.qst.go.jp/records/8215411c1b5e4-17eb-4e3f-a252-2cef694e77c5
Item type | 会議発表用資料 / Presentation(1) | |||||
---|---|---|---|---|---|---|
公開日 | 2021-03-15 | |||||
タイトル | ||||||
タイトル | 13C pulsed dynamic nuclear polarization using pentacene or NV- centers in diamond at room temperature | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_c94f | |||||
資源タイプ | conference object | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
Miyanishi, Koichiro
× Miyanishi, Koichiro× F. Segawa, Takuya× Ohki, Izuru× Shinobu, Onoda× Takeshi, Ohshima× Hiroshi, Abe× Takashima, Hideaki× Takeuchi, Shigeki× Wang, Yu× Takeda, Kazuyuki× Frederick, T. -K. So× Terada, Daiki× Ryuji, Igarashi× Kagawa, Akinori× Kitagawa, Masahiro× Mizuochi, Norikazu× Masahiro, Shirakawa× Negoro, Makoto× Shinobu, Onoda× Takeshi, Ohshima× Hiroshi, Abe× Ryuji, Igarashi× Masahiro, Shirakawa |
|||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | 我々が超高感度溶液NMRを実現したペンタセンをドープした[calboxyl-13C]安息香酸の系と、近年世界中で盛んに研究されているNV中心を含むダイヤモンドの二つの系でpulsed-DNPによる13Cスピンの直接室温超偏極に成功した。Pulsed-DNPシーケンス一回あたりの13Cスピンへの偏極移動確率が、ダイヤモンドの系は安息香酸の系に比べて約9倍高いが、核スピンT1は5倍短く、またESRスペクトルが2倍ブロードであることなどに起因して、到達偏極率が低くなる。最終的に、ダイヤモンド中に天然存在比で存在する13Cスピンでは0.01%、[calboxyl-13C]安息香酸中では0.13%の偏極率を得ることができた。 | |||||
会議概要(会議名, 開催地, 会期, 主催者等) | ||||||
内容記述タイプ | Other | |||||
内容記述 | 3rd IFQMS | |||||
発表年月日 | ||||||
日付 | 2020-12-17 | |||||
日付タイプ | Issued |