ArticleJournal of magnetic resonance (San Diego, Calif. : 1997)2012
Dynamic nuclear polarization-enhanced ¹H-¹³C double resonance NMR in static samples below 20 K.
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 18 papers.
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Who cites it
18 citing papers in PubMed.
- Nitroxide-based triradical dopants for efficient low-temperature dynamic nuclear polarization in aqueous solutions over a broad pH range.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2022Article
- Slice selection in low-temperature, DNP-enhanced magnetic resonance imaging by Lee-Goldburg spin-locking and phase modulation.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2020Article
- Succinyl-DOTOPA: An effective triradical dopant for low-temperature dynamic nuclear polarization with high solubility in aqueous solvent mixtures at neutral pH.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2020Article
- Temperature-Dependent Nuclear Spin Relaxation Due to Paramagnetic Dopants Below 30 K: Relevance to DNP-Enhanced Magnetic Resonance Imaging.The journal of physical chemistry. B · 2018Article
- Low-temperature magnetic resonance imaging with 2.8 μm isotropic resolution.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2018Article
- A ferromagnetic shim insert for NMR magnets - Towards an integrated gyrotron for DNP-NMR spectroscopy.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2017Article
- Low-temperature dynamic nuclear polarization with helium-cooled samples and nitrogen-driven magic-angle spinning.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2016Article
- A versatile and modular quasi optics-based 200GHz dual dynamic nuclear polarization and electron paramagnetic resonance instrument.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2016Article
- Micron-scale magnetic resonance imaging of both liquids and solids.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2015Article
- Successive Stages of Amyloid-β Self-Assembly Characterized by Solid-State Nuclear Magnetic Resonance with Dynamic Nuclear Polarization.Journal of the American Chemical Society · 2015Article
- Synthesis and evaluation of nitroxide-based oligoradicals for low-temperature dynamic nuclear polarization in solid state NMR.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2014Article
- Remote sensing of sample temperatures in nuclear magnetic resonance using photoluminescence of semiconductor quantum dots.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2014Article
- Perturbation of nuclear spin polarizations in solid state NMR of nitroxide-doped samples by magic-angle spinning without microwaves.The Journal of chemical physics · 2014Article
- DNP-enhanced MAS NMR of bovine serum albumin sediments and solutions.The journal of physical chemistry. B · 2014Article
- NMR at low and ultralow temperatures.Accounts of chemical research · 2013Article
- Dynamic nuclear polarization-enhanced 13C NMR spectroscopy of static biological solids.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2013Article
- Solid state nuclear magnetic resonance with magic-angle spinning and dynamic nuclear polarization below 25 K.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2013Article
- Micron-scale magnetic resonance imaging based on low temperatures and dynamic nuclear polarization.Progress in nuclear magnetic resonance spectroscopyReview
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Authors and funding
4 authors.
Funding
Abstract
We demonstrate the feasibility of one-dimensional and two-dimensional ¹H-¹³C double resonance NMR experiments with dynamic nuclear polarization (DNP) at 9.4 T and temperatures below 20 K, including both ¹H-¹³C cross-polarization and ¹H decoupling, and discuss the effects of polarizing agent type, polarizing agent concentration, temperature, and solvent deuteration. We describe a two-channel low-temperature DNP/NMR probe, capable of carrying the radio-frequency power load required for ¹H-¹³C cross-polarization and high-power proton decoupling. Experiments at 8 K and 16 K reveal a significant T₂ relaxation of ¹³C, induced by electron spin flips. Carr-Purcell experiments and numerical simulations of Carr-Purcell dephasing curves allow us to determine the effective correlation time of electron flips under our experimental conditions. The dependence of the DNP signal enhancement on electron spin concentration shows a maximum near 80 mM. Although no significant difference in the absolute DNP enhancements for triradical (DOTOPA-TEMPO) and biradical (TOTAPOL) dopants was found, the triradical produced greater DNP build-up rates, which are advantageous for DNP experiments. Additionally the feasibility of structural measurements on ¹³C-labeled biomolecules was demonstrated with a two-dimensional ¹³C-¹³C exchange spectrum of selectively ¹³C-labeled β-amyloid fibrils.
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