Evidence map›Paper›PMID 33931450›Full record

ArticleScience advances2021

Direct observation of hyperpolarization breaking through the spin diffusion barrier.

Quentin Stern, Samuel François Cousin, Frédéric Mentink-Vigier, Arthur César Pinon, Stuart James Elliott, Olivier Cala, Sami Jannin

Abstract read
In one paragraph

Article in Science advances, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

22 citing papers in PubMed.

  1. Article
  2. Article
  3. Characterization of strongly hyperfine-split protons by DNP.Physical chemistry chemical physics : PCCP · 2026
    Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. BoostingScience advances · 2024
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. Article
  18. Article
  19. Observation of a four-spin solid effect.The Journal of chemical physics · 2022
    Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Quentin SternUniv Lyon, CNRS, ENS Lyon, UCBL, Université de Lyon, CRMN UMR 5280, 69100 Villeurbanne, France. quentin.stern@protonmail.com.ORCID http://orcid.org/0000-0002-8490-030X
Samuel François CousinUniv Lyon, CNRS, ENS Lyon, UCBL, Université de Lyon, CRMN UMR 5280, 69100 Villeurbanne, France.ORCID http://orcid.org/0000-0002-7021-478X
Frédéric Mentink-VigierNational High Magnetic Field Laboratory, Florida State University, 1800 E. Paul Dirac Dr, Tallahassee, FL 32310, USA.ORCID http://orcid.org/0000-0002-3570-9787
Arthur César PinonSwedish NMR Center, University of Gothenburg, Gothenburg, Sweden.
Stuart James ElliottDepartment of Chemistry, Crown Street, University of Liverpool, Liverpool L69 7ZD, UK.ORCID http://orcid.org/0000-0002-8726-0635
Olivier CalaUniv Lyon, CNRS, ENS Lyon, UCBL, Université de Lyon, CRMN UMR 5280, 69100 Villeurbanne, France.ORCID http://orcid.org/0000-0003-3579-0973
Sami JanninUniv Lyon, CNRS, ENS Lyon, UCBL, Université de Lyon, CRMN UMR 5280, 69100 Villeurbanne, France.ORCID http://orcid.org/0000-0002-8877-4929

Funding

TR&D3-SCHP41GM122698 · NIGMS · FLORIDA STATE UNIVERSITY · PI BREY, WILLIAM W, CROSS, TIMOTHY A · 2017 to 2021
$6.7M
14.1 T magnet with +/-1280 G Field Regulation and Integrated MAS Cryogenic SystemS10OD018519 · OD · FLORIDA STATE UNIVERSITY · PI CROSS, TIMOTHY A · 2014 to 2014
$1.4M
NIGMS NIH HHS P41 GM122698NIH HHS S10 OD018519
6 · The paper itself

Abstract

Dynamic nuclear polarization (DNP) is a widely used tool for overcoming the low intrinsic sensitivity of nuclear magnetic resonance spectroscopy and imaging. Its practical applicability is typically bounded, however, by the so-called "spin diffusion barrier," which relates to the poor efficiency of polarization transfer from highly polarized nuclei close to paramagnetic centers to bulk nuclei. A quantitative assessment of this barrier has been hindered so far by the lack of general methods for studying nuclear polarization flow in the vicinity of paramagnetic centers. Here, we fill this gap and introduce a general set of experiments based on microwave gating that are readily implemented. We demonstrate the versatility of our approach in experiments conducted between 1.2 and 4.2 K in static mode and at 100 K under magic angle spinning (MAS)-conditions typical for dissolution DNP and MAS-DNP-and directly observe the marked dependence of polarization flow on temperature.

Identifiers

PMID33931450
PMCPMC8087418

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.