STUDY OF SLOW MOLECULAR MOTIONS IN SOLUTION USING OFF-RESONANCE IRRADIATION IN HOMONUCLEAR NMR .1. LONG DIPOLAR CORRELATION TIMES

被引：8

作者：

DESVAUX, H ^{[1
]}

WARY, C ^{[1
]}

BIRLIRAKIS, N ^{[1
]}

BERTHAULT, P ^{[1
]}

机构：

[1] CTR ETUD SACLAY,CEA,SERV HOSP FREDERIC JOLIOT,F-91191 GIF SUR YVETTE,FRANCE

来源：

MOLECULAR PHYSICS | 1995年 / 86卷 / 05期

关键词：

D O I：

10.1080/00268979500102571

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We have investigated the effects of overall tumbling motions with characteristic times greater than 0.1 mu s on the dipolar relaxation in the presence of an off-resonance rf irradiation. The relaxation rates depend on the effective field amplitude in the rotating frame, and therefore on the rf field strength and offset (giving access to a large domain of characteristic times). Different methods for detecting and measuring this phenomenon, using off-resonance ROESY and local effective correlation time measurement are described. They are essentially based on a variation of the rf field amplitude at constant angle 0 between the effective field and the static magnetic field. An application to glycogen is presented.

引用

页码：1049 / 1058

页数：10

共 34 条

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