Rarely Observed Phase Transitions in a Novel Lyotropic Liquid Crystal System
Rarely Observed Phase Transitions in a Novel Lyotropic Liquid Crystal System
复制标题
新型溶致液晶系统中很少观察到的相变
DOI：
10.1103/physrevlett.78.899
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发表时间：
1997
影响因子：
8.6
通讯作者：
R. Prosser
中科院分区：
文献类型：
--
作者：
J. Katsaras;R. Donaberger;I. Swainson;D. C. Tennant;Z. Tun;R. R. Vold;R. Prosser
This Letter presents neutron diffraction data from a novel, biologically relevant, lyotropic membrane system which is highly alignable (#1.0± mosaic) in a magnetic field and gives rise to a number of welldefined Bragg reflections. The system, composed of two different phosphorylcholine lipids, undergoes a rare nematic ! smectic phase transition upon doping the system with paramagnetic ions (e.g., 2.7 wt % Tm31). In addition, the isotropic phase occurs at a lower temperature than the smectic phase, in contrast to other lyotropic systems and in contrast to the phase behavior predicted by the McMillan model [Phys. Rev. A 4, 1238 (1971)] of smectic ordering. [S0031-9007(96)02290-9]
