Growing Signals from the Noise: Challenging Nuclei in Materials DNP

Journal Article · Fri Sep 14 00:00:00 EDT 2018 · eMagRes

DOI:https://doi.org/10.1002/9780470034590.emrstm1556· OSTI ID:1478991

Perras, Frederic A. ^[1]; Kobayashi, Takeshi ^[1]; Pruski, Marek ^[2]

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1. Ames Lab., Ames, IA (United States)
2. Ames Lab. and Iowa State Univ., Ames, IA (United States)

Here, the polarization of nuclear spins by dynamic nuclear polarization (DNP) has redefined the sensitivity limits of solid–state (SS) NMR spectroscopy. Materials science has been arguably one of the key beneficiaries of the recent remarkable advances of the technique, which included low–temperature magic angle spinning (MAS), modern gyrotrons, and biradical agents for polarization transfer via the cross–effect. In many classes of materials, DNP offers the capability of selectively sensitizing progressively smaller surface and interfacial regions of materials and eliciting responses from previously undetectable nuclei, with no detrimental effect on resolution. We review the most recent applications of DNP–enhanced SSNMR to materials, focusing specifically on measurements that pose insurmountable challenges to conventional SSNMR, including the detection of ¹⁵N, ¹⁷O, ²⁵Mg, ³⁵Cl, ⁴³Ca, ⁷⁹Br, ⁸⁹Y, ¹¹⁹Sn, and ¹⁹⁵Pt by one–dimensional MAS methods, ultrawideline NMR, as well as two–dimensional homo– and heteronuclear correlation spectroscopy.

• Research Organization: Ames Laboratory (AMES), Ames, IA (United States)
• Sponsoring Organization: USDOE
• Grant/Contract Number: AC02-07CH11358
• OSTI ID: 1478991
• Report Number(s): IS-J--9601
• Journal Information: eMagRes, Journal Name: eMagRes Journal Issue: 3 Vol. 7; ISSN 2055-6101
• Publisher: Wiley
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS