Liquid crystals of disc-like molecules
Liquid crystals of disc-like molecules
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DOI：
10.1080/714965606
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发表时间：
1977-11
期刊：
影响因子：
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通讯作者：
S. Chandrasekhar;B. K. Sadashiva;K. A. Suresh
中科院分区：
文献类型：
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作者：
S. Chandrasekhar;B. K. Sadashiva;K. A. Suresh
在由简单盘状分子组成的纯化合物中观察到热致介晶性，即，苯-六-正链烷酸酯。热力学、光学和X射线研究表明，该中间相是一种高度有序的层状液晶。基于X射线数据，提出了一种结构，其中盘以构成六边形排列的列一个在另一个的顶部上堆叠，但是每个列中的盘之间的间距是不规则的。因此，该结构在二维中具有平移周期性，在第三维中具有液体状无序。
Thermotropic mesomorphism has been observed in pure compounds consisting of simple disc-like molecules, viz., benzene-hexa-n-alkanoates. Thermodynamic, optical and x-ray studies indicate that the mesophase is a highly ordered lamellar type of liquid crystal. Based on the x-ray data, a structure is proposed in which the discs are stacked one on top of the other in columns that constitute a hexagonal arrangement, but the spacing between the discs in each column is irregular. Thus the structure has translational periodicity in two dimensions and liquid-like disorder in the third.