Translational Diffusion in Thermotropic Smectic Phases
Translational Diffusion in Thermotropic Smectic Phases
复制标题
热致近晶相中的平移扩散
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
C. Veracini
中科院分区：
文献类型：
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作者：
M. Cifelli;C. Veracini
本文综述了近晶相中棒状介晶平移自扩散行为的NMR测量方法。特别地，报道的结果表明，近晶相中的平移扩散强烈依赖于层状结构中的分子堆积，但是，与先前的断言相反，似乎仅轻微地受相的临床性影响，即，支持了手性近晶C* 相中典型的从向斜到背斜结构的相变的二级特征。
In this report the translational self-diffusion behavior of calamitic mesogens in smectic phases measured by means of NMR diffusometry will be reviewed. In particular the results reported demonstrate that translational diffusion in smectic phases is strongly dependent on molecular packing in the layered structure, but, in contrast with previous assertions seems to be only slightly affected by the clinicity of the phases, i.e., supporting the second order character of the phase transition going from the synclinic to the anticlinic structure typical in chiral Smectic C* phases.