Artículo
High-Resolution hyperpolarized J -spectra with parahydrogen discrimination
Fecha de publicación:
11/2013
Editorial:
American Chemical Society
Revista:
Journal of Physical Chemistry Letters
ISSN:
1948-7185
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Parahydrogen-induced polarization (PHIP) has become a powerful tool not only to overcome the low intrinsic sensitivity of nuclear magnetic resonance (NMR) but also as a probe for catalytic reactions, as a contrast agent in magnetic resonance imaging (MRI), or in analytic chemistry. In complex systems, the antiphase signals coming from parahydrogen in a PASADENA (parahydrogen and synthesis allow dramatically enhanced nuclear alignment) experiment can be partially canceled by the presence of large thermally polarized signals. In the present work, we present a simple method to separate the thermal and hyperpolrized contributions by taking advantage of their very different evolution during a modified CPMG sequence. The separation is obtained in combination with a property of the fast Fourier transform algorithm (FFT). The technique is experimentally demonstrated for a mixture of hyperpolarized 1-hexene and a large amount of CH2Cl2.
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Articulos de INST.DE FISICA ENRIQUE GAVIOLA
Articulos de INST.DE FISICA ENRIQUE GAVIOLA
Citación
Prina, Ignacio; Buljubasich Gentiletti, Lisandro; Acosta, Rodolfo Héctor; High-Resolution hyperpolarized J -spectra with parahydrogen discrimination; American Chemical Society; Journal of Physical Chemistry Letters; 4; 22; 11-2013; 3924-3928
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