Optical properties of dextran in solution and films

被引：0

作者：

Pavlov, GM ^{[1
]}

Grishchenko, AE ^{[1
]}

Ryumtsev, EI ^{[1
]}

Evlampieva, NP ^{[1
]}

Ivanitskii, VV ^{[1
]}

机构：

[1] St Petersburg State Univ, Inst Phys, St Petersburg 199164, Russia

来源：

BIOFIZIKA | 1999年 / 44卷 / 02期

关键词：

dextran; optical properties; birefringence; inclined polarized ray; methods;

D O I：

暂无

中图分类号：

Q6 [生物物理学];

学科分类号：

071011 ;

摘要：

A procedure for the quantitative description of the simplest forms of self-organization of biological molecules at interfaces is proposed. The procedure uses the method of an inclined polarized ray, which makes it possible to determine the degree of the orientation order of molecular fragments and the width of the anisotropic surface layer. The quantitative estimates were obtained in the study of the microbial polysaccharide dextran using the methods of an inclined polarized ray and flow birefringence. It was shown that molecular fragments of dextran are spontaneously oriented predominantly parallel to the interface, and the thickness of oriented surface layers is macroscopic (0.14 mm).

引用

页码：251 / 256

页数：6

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