| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Adams, Ralph W.
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Topics
Publications (7/7 displayed)
- 2024Rare earth mixed sandwich complexes with tetraalkylphospholide and cyclooctatetraenide ligandscitations
- 202331P Nuclear Magnetic Resonance Spectroscopy as a Probe of Thorium–Phosphorus Bond Covalency: Correlating Phosphorus Chemical Shift to Metal–Phosphorus Bond Ordercitations
- 2021Exceptional uranium(VI)-nitride triple bond covalency from 15 N nuclear magnetic resonance spectroscopy and quantum chemical analysis
- 2021Exceptional Uranium(VI)-Nitride Triple Bond Covalency from 15N Nuclear Magnetic Resonance Spectroscopy and Quantum Chemical Analysiscitations
- 2019Assembly and electrochemistry of carbon nanomaterials at the Liquid-liquid Interfacecitations
- 2018Understanding the Microstructure of Poly(p-phenylenevinylene)s Prepared by Ring Opening Metathesis Polymerization Using 13C-Labeled Paracyclophanediene Monomerscitations
- 2009Reversible Interactions with para-Hydrogen Enhance NMR Sensitivity by Polarization Transfercitations
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article
Reversible Interactions with para-Hydrogen Enhance NMR Sensitivity by Polarization Transfer
Abstract
The sensitivity of both nuclear magnetic resonance spectroscopy and magnetic resonance imaging is very low because the detected signal strength depends on the small population difference between spin states even in high magnetic fields. Hyperpolarization methods can be used to increase this difference and thereby enhance signal strength. This has been achieved previously by incorporating the molecular spin singlet para-hydrogen into hydrogenation reaction products. We show here that a metal complex can facilitate the reversible interaction of para-hydrogen with a suitable organic substrate such that up to an 800-fold increase in proton, carbon, and nitrogen signal strengths are seen for the substrate without its hydrogenation. These polarized signals can be selectively detected when combined with methods that suppress background signals.