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| Hauptseite > Publikationsdatenbank > Polarization Transfer Efficiency in PHIP Experiments > print |
| 001 | 836100 | ||
| 005 | 20240712112820.0 | ||
| 024 | 7 | _ | |a 10.1039/C7CP04296E |2 doi |
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| 024 | 7 | _ | |a 1463-9084 |2 ISSN |
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| 037 | _ | _ | |a FZJ-2017-05224 |
| 041 | _ | _ | |a English |
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| 100 | 1 | _ | |a Emondts, M. |0 P:(DE-HGF)0 |b 0 |
| 245 | _ | _ | |a Polarization Transfer Efficiency in PHIP Experiments |
| 260 | _ | _ | |a Cambridge |c 2017 |b RSC Publ. |
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| 520 | _ | _ | |a Parahydrogen induced polarization (PHIP) is a hyperpolarization method for NMR signal enhancement with applications in spectroscopy and imaging. Although parahydrogen can be easily enriched up to nearly 95%, the polarization detected on the hydrogenated substrate is substantially lower, where numerous loss mechanisms between the start of the hydrogenation reaction and detection affect polarization levels. The quality of PHIP systems is commonly determined by stating either the polarization degree or the enhancement factor of the product at the time of detection. In this study, we present a method that allows the distinction of polarization loss due to both the catalytic cycle and T1 relaxation of the formed product prior to detection. We determine the influence of homogeneous catalysts and define a rigorous measure of the polarization transfer efficiency (PTE). Our results show that the PTE strongly depends on the concentration of all components and the chemical structure of the catalyst as well as on the magnetic field of detection. |
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| 700 | 1 | _ | |a Colell, J. |0 P:(DE-HGF)0 |b 1 |
| 700 | 1 | _ | |a Blümich, B. |0 P:(DE-HGF)0 |b 2 |
| 700 | 1 | _ | |a Schleker, Peter Philipp Maria |0 P:(DE-Juel1)168465 |b 3 |e Corresponding author |
| 773 | _ | _ | |a 10.1039/C7CP04296E |g p. 10.1039.C7CP04296E |0 PERI:(DE-600)1476244-4 |n 33 |p 21933-21937 |t Physical chemistry, chemical physics |v 19 |y 2017 |x 1463-9084 |
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