Measurement of dipolar couplings in partially oriented molecules by local field NMR spectroscopy with low-power decoupling

被引：8
|
作者：
Marjanska, M [1 ]
Castiglione, F [1 ]
Walls, JD [1 ]
Pines, A [1 ]
机构：
[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Chem, Div Mat Sci, Berkeley, CA 94720 USA
来源：
JOURNAL OF MAGNETIC RESONANCE | 2002年 / 158卷 / 1-2期
关键词：
liquid crystalline solvents; NMR; proton-detected local field; PDLF; phase-modulated Lee-Goldburg; PMLG; heteronuclear spin-spin couplings; multiple pulse sequence;
D O I：
10.1016/S1090-7807(02)00059-9
中图分类号：
Q5 [生物化学];
学科分类号：
071010 ; 081704 ;
摘要：
Low-power phase-modulated Lee-Goldburg homonuclear decoupling was used to record PDLF spectra of fluorine-substituted benzene derivatives dissolved in nematic thermotropic liquid crystalline solvents. The low-power decoupling minimizes sample heating during RE irradiation while still achieving highly resolved PDLF spectra. The method is illustrated by recording spectra for 1,3-dichloro-4-fluoro-5-nitrobenzene, 1,3-dichloro-4-fluorobenzene, and 1, 2-difluoro benzene dissolved in different nematic solvents. (C) 2002 Elsevier Science (USA). All rights reserved.
引用
收藏
页码：52 / 59
页数：8
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