ArticleJournal of magnetic resonance (San Diego, Calif. : 1997)2012
Dynamic nuclear polarization at 700 MHz/460 GHz.
Article in Journal of magnetic resonance (San Diego, Calif. : 1997), 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.
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Who cites it
35 citing papers in PubMed.
- Sorbitol-Based Glass Matrices Enable Dynamic Nuclear Polarization beyond 200 K.The journal of physical chemistry letters · 2024Article
- Biradical Polarizing Agents at High Fields.The journal of physical chemistry. B · 2022Article
- Characterization of photonic band resonators for DNP NMR of thin film samples at 7 T magnetic field.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2021Article
- Targetable Tetrazine-Based Dynamic Nuclear Polarization Agents for Biological Systems.Chembiochem : a European journal of chemical biology · 2020Article
- Second Harmonic 527-GHz Gyrotron for DNP-NMR: Design and Experimental Results.IEEE transactions on electron devices · 2020Article
- Modular, triple-resonance, transmission line DNP MAS probe for 500 MHz/330 GHz.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2019Article
- Advances in instrumentation and methodology for solid-state NMR of biological assemblies.Journal of structural biology · 2019Review
- Pulsed Electron Decoupling and Strategies for Time Domain Dynamic Nuclear Polarization with Magic Angle Spinning.The journal of physical chemistry letters · 2018Article
- Photonic-band-gap gyrotron amplifier with picosecond pulses.Applied physics letters · 2017Article
- Efficient cross-effect dynamic nuclear polarization without depolarization in high-resolution MAS NMR.Chemical science · 2017Article
- Off-resonance NOVEL.The Journal of chemical physics · 2017Article
- Instrumentation for cryogenic magic angle spinning dynamic nuclear polarization using 90L of liquid nitrogen per day.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2017Article
- Frequency-Swept Integrated Solid Effect.Angewandte Chemie (International ed. in English) · 2017Article
- Ramped-amplitude NOVEL.The Journal of chemical physics · 2017Article
- Combining DNP NMR with segmental and specific labeling to study a yeast prion protein strain that is not parallel in-register.Proceedings of the National Academy of Sciences of the United States of America · 2017Article
- A ferromagnetic shim insert for NMR magnets - Towards an integrated gyrotron for DNP-NMR spectroscopy.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2017Article
- Imaging Tumor Metabolism to Assess Disease Progression and Treatment Response.Clinical cancer research : an official journal of the American Association for Cancer Research · 2016Review
- Pulsed Dynamic Nuclear Polarization with Trityl Radicals.The journal of physical chemistry letters · 2016Article
- Dynamic Nuclear Polarization as an Enabling Technology for Solid State Nuclear Magnetic Resonance Spectroscopy.Analytical chemistry · 2016Article
- Frequency swept microwaves for hyperfine decoupling and time domain dynamic nuclear polarization.Solid state nuclear magnetic resonance · 2015Article
Corrections and comments
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Authors and funding
13 authors.
Funding
Abstract
We describe the design and implementation of the instrumentation required to perform DNP-NMR at higher field strengths than previously demonstrated, and report the first magic-angle spinning (MAS) DNP-NMR experiments performed at (1)H/e(-) frequencies of 700 MHz/460 GHz. The extension of DNP-NMR to 16.4 T has required the development of probe technology, cryogenics, gyrotrons, and microwave transmission lines. The probe contains a 460 GHz microwave channel, with corrugated waveguide, tapers, and miter-bends that couple microwave power to the sample. Experimental efficiency is increased by a cryogenic exchange system for 3.2 mm rotors within the 89 mm bore. Sample temperatures ≤85 K, resulting in improved DNP enhancements, are achieved by a novel heat exchanger design, stainless steel and brass vacuum jacketed transfer lines, and a bronze probe dewar. In addition, the heat exchanger is preceded with a nitrogen drying and generation system in series with a pre-cooling refrigerator. This reduces liquid nitrogen usage from >700 l per day to <200 l per day and allows for continuous (>7 days) cryogenic spinning without detrimental frost or ice formation. Initial enhancements, ε=-40, and a strong microwave power dependence suggests the possibility for considerable improvement. Finally, two-dimensional spectra of a model system demonstrate that the higher field provides excellent resolution, even in a glassy, cryoprotecting matrix.
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