Nmr Measurement of Resolved Heteronuclear Dipole Couplings in Liquid-Crystals and Lipids

TitleNmr Measurement of Resolved Heteronuclear Dipole Couplings in Liquid-Crystals and Lipids
Publication TypeJournal Article
Year of Publication1994
AuthorsSchmidt-Rohr K., Nanz D., Emsley L., Pines A
JournalJournal of Physical Chemistry
Volume98
Issue27
Pagination6668-6670
Date PublishedJul 7
ISBN Number0022-3654
Accession NumberWOS:A1994NW53100002
Keywordssolids
Abstract

Simplified nuclear magnetic resonance (NMR) spectra of heteronuclear dipolar couplings for molecules in an anisotropic environment, such as liquid crystals and lipids, are obtained by proton-detected local-field spectroscopy. The distance-dependent dipolar interactions between spins of magnetically active nuclei can be determined directly from the spectrum because many-body effects that complicate conventional dipolar NMR spectra are avoided by selectively probing local fields produced by rare spins at the location of abundant spins. We employ the technique to resolve the carbon-proton dipolar couplings of benzene dissolved in a nematic liquid crystal and to measure phosphorus-proton couplings in lecithin in the L(alpha) phase to obtain constraints on the phosphocholine headgroup structure.

URL<Go to ISI>://WOS:A1994NW53100002
DOI10.1021/J100078a002
Short TitleNmr Measurement of Resolved Heteronuclear Dipole Couplings in Liquid-Crystals and Lipids
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