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Transformation of symmetrization order to nuclear-spin magnetization by chemical reaction and nuclear magnetic resonance.

C. Russell Bowers, +1 more
- 24 Nov 1986 - 
- Vol. 57, Iss: 21, pp 2645-2648
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TLDR
A method of obtaining very large nuclear-spin polarizations and a means of extending the resultant sensitivity enhancement to other spins is proposed in which the transfer of order occurs through population differences not associated with magnetization.
Abstract
A method of obtaining very large nuclear-spin polarizations is proposed and illustrated by density-operator calculations. The prediction is that chemical reaction and rf irradiation can convert the scalar parahydrogen state into polarization of order unity on the nuclear spins of the products of molecular-hydrogen addition reactions. A means of extending the resultant sensitivity enhancement to other spins is proposed in which the transfer of order occurs through population differences not associated with magnetization.

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Clinical-Scale Batch-Mode Production of Hyperpolarized Propane Gas for MRI.

TL;DR: It is shown that high polarization values can be retained despite the significant increase in the production rate of hyperpolarized propane, which enables the future use of this compound as a new inhalable contrast agent for diagnostic detection via MRI.
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Magnetic resonance imaging of (1)H long lived states derived from parahydrogen induced polarization in a clinical system.

TL;DR: A low-power radiofrequency pulse sequence is used for the conversion of the NMR silent singlet spin state to observable magnetization, which allows multiple successive singlet-triplet conversions and may open unprecedented opportunities to use the standard MRI nucleus (1)H for e.g. metabolic imaging in the future.
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Organic Reaction Monitoring of a Glycine Derivative Using Signal Amplification by Reversible Exchange-Hyperpolarized Benchtop Nuclear Magnetic Resonance Spectroscopy.

TL;DR: This study is the first example of the monitoring of the organic reaction by SABRE and benchtop NMR, and it will open new possibilities for applying this sys-tem to many other organic reactions, and also provide more fruitful future applications such as drug discovery and mech-anism study.
Journal ArticleDOI

The effect of oxidative and reductive treatments of titania-supported metal catalysts on the pairwise hydrogen addition to unsaturated hydrocarbons

TL;DR: In this paper, the influence of oxidative and reductive treatments of the supported metal catalysts on the NMR signal enhancements provided by parahydrogen-induced polarization (PHIP) effects in hydrogenation of propene, propyne, 1,3-butadiene and 1-butyne was studied.
Journal ArticleDOI

Following Metabolism in Living Microorganisms by Hyperpolarized 1H NMR

TL;DR: The potential of this sensitivity-enhancing approach to probe the enzymatic process that could not be suitably resolved by (13)C dDNP MR is demonstrated and measured, in microorganisms, the action of pyruvate decarboxylase (PDC) and pyruVate formate lyase (PFL)-enzymes that catalyze the decar boxylation of pyrivate to form acetaldehyde and formate, respectively.
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