期刊
LIQUID CRYSTALS
卷 33, 期 3, 页码 361-366出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/02678290600563112
关键词
-
Glycolipids are amphotropic liquid crystals forming lyotropic liquid crystals in aqueous solutions and thermotropic liquid crystals in their dry form. We report studies on the thermotropic properties of seven different neat glycolipids: four maltoside, two glucoside and one pyranoside lipids. Optical birefringence, electrical conductivity, differential scanning calorimetry, and dielectric spectroscopy measurements were employed to characterize the phase structures of the materials. In general, they exhibit a wide (> 100 degrees C) mesophase (smectic, columnar) range with low (0.01-0.04) birefringence. They have large (60-120) dielectric susceptibility basically proportional to the number of polar sugar heads. Depending on the temperature the relaxation frequency of the susceptibility varies between < 100 Hz and 1 MHz, mainly determined by the hydrogen bonding between the polar sugar heads.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据