Berestovskiĭ G N
Biofizika. 1975 Jul-Aug;20(4):633-7.
A direct method of measuring the optical phase difference arising in a bilayer lipid membrane at the expence of its birefringent properties is offered. A dependence of the value and sign of lipid bilayer birefringence on ionic concentration in the medium has been observed. For example, the birefringence value of the bilayer from egg lecithin with eta-decan changes from -0.005 to 0.01 with a change of NaCl concentration from 0 to 5 M, the sign changing at about 1 M. It is suggested that the polar region of the bilayer has negative birefringence, and that it is its infrastructure that changes with the ionic strength of the solution.
本文提出了一种直接测量双层脂质膜因双折射特性而产生的光学相位差的方法。已观察到脂质双层双折射的值和符号对介质中离子浓度的依赖性。例如，随着NaCl浓度从0变化到5M，含η-癸烷的卵磷脂双层的双折射值从-0.005变化到0.01，符号在约1M时改变。有人认为双层的极性区域具有负双折射，并且正是其结构随着溶液的离子强度而变化。
