Nuclear magnetic resonance spectroscopy in cholesteric liquid crystals. I. Orientational order parameter measurements

Nuclear magnetic resonance spectroscopy in cholesteric liquid crystals. I. Orientational order parameter measurements
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胆甾型液晶中的核磁共振波谱。

DOI:
10.1063/1.443059
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发表时间:
1982
期刊:
影响因子:
--
通讯作者:
J. Prasad
J. Prasad
中科院分区:
--
文献类型:
--
作者:
N. Shivaprakash;J. Prasad

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通过研究宽线核磁共振吸收光谱中的偶极-偶极分裂,估计了胆甾型液晶化合物(胆甾醇苯甲酸酯、碳酸甲酯、碳酸乙酯和月桂酸酯)的取向有序参数。 S 因子的温度依赖性与向列液晶的温度依赖性非常一致。
Orientational order parameters for cholesteric liquid crystalline compounds—cholesteryl benzoate, methyl carbonate, ethyl carbonate, and laurate—have been estimated by studying the dipole–dipole splittings in the wide line NMR absorption spectra. The temperature dependences of the S factor agree closely with those of nematic liquid crystals.