THE NEUTRAL AREA SURFACE OF THE CUBIC MESOPHASE - LOCATION AND PROPERTIES
THE NEUTRAL AREA SURFACE OF THE CUBIC MESOPHASE - LOCATION AND PROPERTIES
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DOI：
10.1016/s0006-3495(94)80787-8
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发表时间：
1994-02-01
影响因子：
3.4
通讯作者：
CAFFREY, M
中科院分区：
文献类型：
--
作者：
CHUNG, H;CAFFREY, M
中性区域曲面可以定义为其面积在弯曲时保持固定的曲面。假设这样的表面存在于构成双连续立方中间相的两亲单分子层中，并且它近似平行于此类体系中高度卷曲的极性/非极性交错。在这里，我们报道了水合单甘油酯立方相(La3d空间群)的中性区表面是如何测定的。它位于距酰基链甲基末端约8.8埃的距离。在25℃时，每个脂类分子在中性区域表面的表面积为35.1+/-0.2埃(2)，这与相同温度下水合单油酸酯在层状液晶相中的平均截面积非常相似。
A neutral area surface can be defined as one whose area remains fixed upon bending. It is assumed that such a surface exists within the amphiphilic monolayers that constitute the bicontinuous cubic mesophases and that it parallels approximately the highly convoluted polar/apolar interlace in such systems. Here, we report on how the neutral area surface in the cubic phase (space group la3d) of the hydrated monoacylglycerol, monoolein, was determined. It is located at a distance of similar to 8.8 Angstrom from the methyl terminus of the acyl chain. At 25 degrees C, the surface area per lipid molecule at the neutral area surface is 35.1 +/- 0.2 Angstrom(2), which is remarkably similar to the mean cross-sectional area of hydrated monoolein in the lamellar liquid crystalline phase at this same temperature.