WEKO3
アイテム
Room-temperature hyperpolarization of polycrystalline samples with optically polarized triplet electrons: pentacene or nitrogen-vacancy center in diamond?
https://repo.qst.go.jp/records/81765
https://repo.qst.go.jp/records/81765a682e1ce-9ef5-4981-bc38-c1bc3f3c3f3a
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2021-02-02 | |||||
| タイトル | ||||||
| タイトル | Room-temperature hyperpolarization of polycrystalline samples with optically polarized triplet electrons: pentacene or nitrogen-vacancy center in diamond? | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| 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× Takeda, Kazuyuki× Ohki, Izuru× Onoda, Shinobu× Ohshima, Takeshi× Abe, Hiroshi× Takashima, Hideaki× Takeuchi, Shigeki× I. Shames, Alexander× Morita, Kohki× Wang, Yu× Frederick, T.-K. So× Terada, Daiki× Igarashi, Ryuji× Kagawa, Akinori× Kitagawa, Masahiro× Mizuochi, Norikazu× Shirakawa, Masahiro× Negoro, Makoto× Izuru, Ohki× Shinobu, Onoda× Takeshi, Ohshima× Hiroshi, Abe× So, Frederick× Daiki, Terada× Ryuji, Igarashi× Masahiro, Shirakawa× Makoto, Negoro |
|||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | We demonstrate room-temperature 13C hyperpolarization by dynamic nuclear polarization (DNP) using optically polarized triplet electron spins in two polycrystalline systems: pentacene-doped [carboxyl-13C] benzoic acid and microdia-monds containing NV−centers. For both samples, the integrated solid effect (ISE) is used to polarize the13C spin system in magnetic fields of 350-400 mT. In the benzoic acid sample, the13C spin polarization is enhanced up to 0.12% through directelectron-to-13C polarization transfer without performing dynamic1H polarization followed by 1H-13C cross polarization. In5addition, ISE has been successfully applied for the first time to polarize naturally abundant 13C spins in a microdiamond sample to 0.01%. To characterize the buildup of the13C polarization, we discuss the efficiencies of direct polarization transfer be-tween the electron and13C spins as well as that of13C–13C spin diffusion, examining various parameters which are beneficial or detrimental for successful bulk dynamic13C polarization. | |||||
| 書誌情報 |
Magnetic Resonance 巻 2, 号 1, p. 33-48, 発行日 2021-01 |
|||||
| 出版者 | ||||||
| 出版者 | Copernicus Publications | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0730-725X | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.5194/mr-2-33-2021 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://mr.copernicus.org/articles/2/33/2021/mr-2-33-2021.html | |||||
