Evidence map›Paper›PMID 31893873›Full record

ArticleThe Journal of chemical physics2019

Fast-pulsing LED-enhanced NMR: A convenient and inexpensive approach to increase NMR sensitivity.

Hanming Yang, Heike Hofstetter, Silvia Cavagnero

Open access · greenAbstract read
In one paragraph

Article in The Journal of chemical physics, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
1.2field-weighted citation impact, top 23% of its field
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

14 citing papers in PubMed, 30 citations in OpenAlex.

  1. Nuclear-Spin Hyperpolarization of Biomolecules by Optically Enhanced NMR at Ultra-High Field.Journal of the Chinese Chemical Society. Zhongguo hua xue hui (Taipei, Taiwan) · 2026
    Article
  2. Article
  3. Predictions of Steady-State Photo-CIDNP Enhancement by Machine Learning.Journal of the American Chemical Society · 2025
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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

3 authors at 1 institution in 1 country.

Hanming YangDepartment of Chemistry, University of Wisconsin-Madison, 1101 University Ave., Madison, Wisconsin 53706, USA.
Heike HofstetterDepartment of Chemistry, University of Wisconsin-Madison, 1101 University Ave., Madison, Wisconsin 53706, USA.
Silvia CavagneroDepartment of Chemistry, University of Wisconsin-Madison, 1101 University Ave., Madison, Wisconsin 53706, USA.ORCID 0000000242902331
University of Wisconsin–Madison · US

Funding

Development of LED-Assisted NMR Technologies for the Atomic-Resolution Analysis of Medically Relevant Biomolecules in Solution at Submicromolar ConcentrationR01GM125995 · NIGMS · UNIVERSITY OF WISCONSIN-MADISON · PI CAVAGNERO, SILVIA · 2018 to 2025
$2.8M
Laser-Enhanced NMR Instrumentation for Chemical and Biochemical ResearchS10OD012245 · OD · UNIVERSITY OF WISCONSIN-MADISON · PI CAVAGNERO, SILVIA · 2013 to 2013
$1.0M
PURCHASE OF A 1409 TESLA NMR INSTRUMENTS10RR013866 · NCRR · UNIVERSITY OF WISCONSIN MADISON · PI GELLMAN, SAMUEL H. · 1999 to 1999
–
NCRR NIH HHS S10 RR013866NIGMS NIH HHS R01 GM125995NIH HHS S10 OD012245
6 · The paper itself

Abstract

Low-concentration photochemically induced dynamic nuclear polarization (LC-photo-CIDNP) has recently emerged as a powerful technology for the detection of aromatic amino acids and proteins in solution in the low-micromolar to nanomolar concentration range. LC-photo-CIDNP is typically carried out in the presence of high-power lasers, which are costly and maintenance-heavy. Here, we show that LC-photo-CIDNP can be performed with light-emitting diodes (LEDs), which are inexpensive and much less cumbersome than lasers, laser diodes, flash lamps, or other light sources. When nuclear magnetic resonance (NMR) sample concentration is within the low-micromolar to nanomolar range, as in LC-photo-CIDNP, replacement of lasers with LEDs leads to no losses in sensitivity. We also investigate the effect of optical-fiber thickness and compare excitation rate constants of an Ar ion laser (488 nm) and a 466 nm LED, taking LED emission bandwidths into account. In addition, importantly, we develop a novel pulse sequence (

Identifiers

PMID31893873
PMCPMC7043845
OpenAlexW2997371603

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.