NE-21 NMR-SPECTROSCOPY - TEMPERATURE-DEPENDENCE OF THE NE-21 QUADRUPOLE COUPLING AND ELECTRIC-FIELD GRADIENT IN A LIQUID-CRYSTAL

被引：11

作者：

INGMAN, P

JOKISAARI, J

PULKKINEN, O

DIEHL, P

MUENSTER, O

机构：

[1] UNIV OULU,NUCL MAGNET RESONANCE LAB,SF-90570 OULU,FINLAND

[2] UNIV BASEL,DEPT PHYS,CH-4056 BASEL,SWITZERLAND

来源：

CHEMICAL PHYSICS LETTERS | 1991年 / 182卷 / 3-4期

关键词：

D O I：

10.1016/0009-2614(91)80210-O

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：

The Ne-21 NMR spectrum of Ne-21-enriched neon gas dissolved in the anisotropic phase of the thermotropic liquid crystal ZLI1167 was recorded at various temperatures. The curve obtained by plotting the absolute value of the quadrupole coupling constant, (chi), as a function of temperature is found to possess a maximum in the nematic range. This is considered as an indication of at least two contributions to the total electric field gradient at the nucleus. After the transition to the smectic A phase, (chi) starts to increase without detectable discontinuity to low temperature. The results are compared to the corresponding ones measured earlier for Kr-83 and Xe-131.

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页码：253 / 256

页数：4

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