Cholesteric Structure-II Chemical Significance
Cholesteric Structure-II Chemical Significance
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胆甾型结构-II 化学意义
DOI：
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发表时间：
1966
期刊：
影响因子：
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通讯作者：
R. Nadalin
中科院分区：
文献类型：
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作者：
J. L. Fergason;N. N. Goldberg;R. Nadalin
在自然界中，有色物质不吸收入射光，但选择性地透射和散射光，这是一种独特的现象。颜色并不像我们熟悉的染料那样依赖于分子中特定的电子排列，而是依赖于形状（空间因素）和偶极排列等因素。因此，表现出双相的材料可能受到碳链长度差异或官能团所占位置的影响。
Abstract The cholesteric phase represents a unique situation in nature in that a highly colored material does not absorb incident radiation but transmits and scatters light selectively. The colors are not dependent upon specific electronic arrangements in the molecules as in the morke familiar dyes but, instead, are dependent on such factors as shape (steric factors) and dipole arragment. Thus, materials which exhibit cholesteric phases may be affected by a difference in carbon chain length or by the position occupied by a functional group.