Crystal shapes of cubic mesophases in pure and mixed carboxylic acids observed by optical microscopy
Crystal shapes of cubic mesophases in pure and mixed carboxylic acids observed by optical microscopy
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通过光学显微镜观察纯羧酸和混合羧酸中立方中间相的晶体形状
DOI：
10.1080/02678290050080724
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发表时间：
2000
期刊：
影响因子：
2.2
通讯作者：
M. Veber
中科院分区：
文献类型：
--
作者：
M. Impéror;P. Sotta;M. Veber
用光学显微镜观察了纯（Ia3d立方空间群）和混合（Im3m立方空间群）热致羧酸的两种不同立方相。在非偏振光下，立方相的存在通过观察具有高度对称形状的多面单晶而明确地确定。观察到的晶体习性是生长形状，而不是平衡形状。小面的描述，无论是在与空气和各向同性的液相的界面。小平面对应于与晶体学数据相关的各种网状平面。
Two different cubic phases in pure (Ia3d cubic space group) and mixed (Im3m cubic space group) thermotropic carboxylic acids are observed by optical microscopy. In unpolarized light, the presence of the cubic phases is identified unambiguously by the observation of facetted single crystals with highly symmetrical shapes. The observed crystal habits are growth shapes, rather than equilibrium shapes. The facetting is described, both at the interfaces with air and with the isotropic liquid phase. The facets correspond to various reticular planes that are discussed in relation with crystallographic data.