Journal Article10.1021/JA00260A026
Para hydrogen induced polarization in hydrogenation reactions
Thomas C. Eisenschmid,Rein U. Kirss,Paul P. Deutsch,Sven I. Hommeltoft,Richard Eisenberg,Joachim Bargon,Ronald G. Lawler,Alan L. Balch +7 more
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TL;DR: In the presence of rhodium carbonyle or palladium, hydrogenation de composes acetyleniques ou ethylenique in presence of complexes de rhodanium carbonyles ou de palladium.
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Abstract: Hydrogenation de composes acetyleniques ou ethyleniques en presence de complexes de rhodium carbonyle ou de palladium
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Citations
Robust Imidazole‐15N2 Synthesis for High‐Resolution Low‐Field (0.05 T) 15N Hyperpolarized NMR Spectroscopy
Roman V. Shchepin,Danila A. Barskiy,Aaron M. Coffey,Matthew A. Feldman,Larisa M. Kovtunova,Valerii I. Bukhtiyarov,Kirill V. Kovtunov,Boyd M. Goodson,Igor V. Koptyug,Eduard Y. Chekmenev,Eduard Y. Chekmenev +10 more
- 31 May 2017
TL;DR: The SABRE-SHEATH (Signal Amplification by Reversible Exchange in SHield Enables Alignment Transfer to Heteronuclei) technique, first demonstrated in 2015, allows for direct, efficient (>20% nuclear spin polarization, and fast (in under one minute) hyperpolarization of 15N sites.
Open-Source Automated Parahydrogen Hyperpolarizer for Molecular Imaging Using 13C Metabolic Contrast Agents
Aaron M. Coffey,Roman V. Shchepin,Milton L. Truong,Ken Wilkens,Wellington Pham,Eduard Y. Chekmenev +5 more
TL;DR: The conversion of hyperpolarized 13C-phospholactate to13C-lactate in vivo is used here to demonstrate the feasibility of ultrafast multislice 13C MRI after tail vein injection of hyper polarization in mice.
Demonstration of heterogeneous parahydrogen induced polarization using hyperpolarized agent migration from dissolved Rh(I) complex to gas phase.
Kirill V. Kovtunov,Danila A. Barskiy,Roman V. Shchepin,Aaron M. Coffey,Kevin W. Waddell,Igor V. Koptyug,Eduard Y. Chekmenev +6 more
TL;DR: The concept of stoichiometric as opposed to purely catalytic use of PHIP-available complexes with an unsaturated payload precursor molecule can be extended to other contrast agents for both homogeneous and heterogeneous PHIP.
Hyperpolarisation through reversible interactions with parahydrogen
Lyrelle S. Lloyd,Aziz Asghar,Michael J. Burns,Adrian J. Charlton,Steven R. Coombes,Michael J. Cowley,Gordon J. Dear,Simon B. Duckett,Georgi R. Genov,Gary G. R. Green,Louise A. R. Highton,Alexander J. J. Hooper,Majid Ali Khan,Iman G. Khazal,Richard J. Lewis,Ryan E. Mewis,Andrew D. Roberts,Amy J. Ruddlesden +17 more
TL;DR: In this article, the authors describe how the complexes Ir(COD)(NHC)Cl [NHC = IMes, SIMes, IPr, SIPr, ICy, IMe and ImMe2NPri2] provide significant insight into the catalytic process that underpins the hyperpolarization method signal amplification by reversible exchange.
Generating Long-Lasting 1H and 13C Hyperpolarization in Small Molecules with Parahydrogen-Induced Polarization
TL;DR: In this paper, an increase of the effective relaxation time by a factor up to three is achieved experimentally, when molecules hyperpolarized by PHIP are kept in a weak magnetic field instead of the strong field of a typical NMR magnet.