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High-order multiple quantum excitation in 13C nuclear magnetic resonance spectroscopy of organic solids
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Industriell miljö- och processteknik.ORCID-id: 0000-0003-1067-7990
National Institutes of Health.
1999 (engelsk)Inngår i: Journal of Chemical Physics, ISSN 0021-9606, E-ISSN 1089-7690, Vol. 110, nr 6, s. 2749-2752Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Excitation and detection of high-order multiple quantum (MQ) coherences among 13C nuclear spins in singly-13C-labeled organic solids is demonstrated experimentally. MQ signals involving at least ten quanta of spin angular momentum are observed in nuclear magnetic resonance (NMR) measurements on polycrystalline L-methionine-methyl-13C and L-alanine-1-13C, using a time-reversible multiple pulse excitation sequence modified specifically for experiments on systems with weak homonuclear dipole-dipole couplings and strong inhomogeneous interactions such as anisotropic chemical shifts. The feasibility of high-order MQ excitation and detection in 13C-labeled organic solids promises to expand significantly the range of applications of MQ NMR as a structural tool, to include such systems as 13C-labeled synthetic polymers and biopolymers.

sted, utgiver, år, opplag, sider
1999. Vol. 110, nr 6, s. 2749-2752
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URN: urn:nbn:se:ltu:diva-5924DOI: 10.1063/1.477876Lokal ID: 41c7cca0-e355-11db-b078-000ea68e967bOAI: oai:DiVA.org:ltu-5924DiVA, id: diva2:978800
Merknad
Godkänd; 1999; 20070405 (bajo)Tilgjengelig fra: 2016-09-29 Laget: 2016-09-29 Sist oppdatert: 2017-11-24bibliografisk kontrollert

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