Two-dimensional NMR correlations of liquid crystals using switched angle spinning

TitleTwo-dimensional NMR correlations of liquid crystals using switched angle spinning
Publication TypeJournal Article
Year of Publication2002
AuthorsHavlin R.H, Park G.HJ, Pines A
JournalJournal of Magnetic Resonance
Volume157
Issue1
Pagination163-169
Date PublishedJul
ISBN Number1090-7807
Accession NumberWOS:000177742400020
Keywordsdynamics
Abstract

We present the first application of switched angle spinning (SAS) to correlate the first-order dipolar spectrum of a liquid crystalline sample with the isotropic magic angle spinning (MAS) spectrum in a two-dimensional experiment. In this experiment we are able to select the degree of dipolar couplings introduced via mechanical manipulations of the liquid crystal director in a single oriented sample. The F-19 SAS-COSY correlation of iodotrifluoroethylene, an AMX spin system, dissolved in the nematic liquid crystal 4-octylphenyl-2-chloro-4-(4-heptylbenzoyloxy)-benzoate provides assignment of both the J and dipolar couplings in a single experiment. This work demonstrates the use of oriented samples and sample spinning to resolve hornonuclear dipolar couplings using isotropic chemical shifts. (C) 2002 Elsevier Science (USA).

URL<Go to ISI>://WOS:000177742400020
DOI10.1006/Jmre.2002.2571
Short TitleTwo-dimensional NMR correlations of liquid crystals using switched angle spinning
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