Evidence map›Paper›PMID 28423212›Full record

ArticleChemistry (Weinheim an der Bergstrasse, Germany)2017

Persistent Radicals of Self-assembled Benzophenone bis-Urea Macrocycles: Characterization and Application as a Polarizing Agent for Solid-state DNP MAS Spectroscopy.

Baillie A DeHaven, John T Tokarski, Arthur A Korous, Frederic Mentink-Vigier, Thomas M Makris, Alexander M Brugh, Malcolm D E Forbes, Johan van Tol, Clifford R Bowers, Linda S Shimizu

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Chemistry (Weinheim an der Bergstrasse, Germany), 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing 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

3 citing papers in PubMed.

  1. Article
  2. Review
  3. 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

10 authors.

Baillie A DeHavenDepartment of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, 29208, USA.
John T TokarskiDepartment of Chemistry, University of Florida, Gainesville, Florida, 32611, USA.
Arthur A KorousDepartment of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, 29208, USA.
Frederic Mentink-VigierNational High Magnetic Field Laboratory, Florida State University, 1800 East Paul Dirac Drive, Tallahassee, Florida, 32310, USA.
Thomas M MakrisDepartment of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, 29208, USA.ORCID http://orcid.org/0000-0001-7927-620X
Alexander M BrughDepartment of Chemistry and Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio, 43403, USA.
Malcolm D E ForbesDepartment of Chemistry and Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio, 43403, USA.
Johan van TolNational High Magnetic Field Laboratory, Florida State University, 1800 East Paul Dirac Drive, Tallahassee, Florida, 32310, USA.ORCID http://orcid.org/0000-0001-6972-2149
Clifford R BowersDepartment of Chemistry, University of Florida, Gainesville, Florida, 32611, USA.ORCID http://orcid.org/0000-0001-6155-5163
Linda S ShimizuDepartment of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, 29208, USA.ORCID http://orcid.org/0000-0001-5599-4960

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

UV-irradiation of a self-assembled benzophenone bis-urea macrocycle generates μm amounts of radicals that persist for weeks under ambient conditions. High-field EPR and variable-temperature X-band EPR studies suggest a resonance stabilized radical pair through H-abstraction. These endogenous radicals were applied as a polarizing agent for magic angle spinning (MAS) dynamic nuclear polarization (DNP) NMR enhancement. The field-stepped DNP enhancement profile exhibits a sharp peak with a maximum enhancement of ϵ

Indexed as

benzophenoneDNPEPR spectroscopymacrocyclesradicals

Identifiers

PMID28423212
PMCPMC5724385

What OpenQuestion holds

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Registered trials

None linked

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.