ROD-LIKE CHOLESTEROL MICELLES IN AQUEOUS-SOLUTION STUDIED USING POLARIZED AND DEPOLARIZED DYNAMIC LIGHT-SCATTERING

被引：36

作者：

CASTANHO, MARB

BROWN, W

PRIETO, MJE

机构：

[1] UNIV UPPSALA,INST PHYS CHEM,BOX 532,S-75121 UPPSALA,SWEDEN

[2] CTR QUIM FIS MOLEC,P-1096 LISBON,PORTUGAL

来源：

BIOPHYSICAL JOURNAL | 1992年 / 63卷 / 06期

关键词：

D O I：

10.1016/S0006-3495(92)81733-2

中图分类号：

Q6 [生物物理学];

学科分类号：

071011 ;

摘要：

Micelles of cholesterol in aqueous solution have been investigated using polarized and depolarized dynamic light scattering. They are shown to be highly extended and characterized by a narrow size distribution. It is shown that a rod-like model is applicable with length, L = 580 nm. Determination of the rotational diffusion coefficient by analysis of the autocorrelation function gave a value of THETA = 150 s-1, which is close to the calculated value for the rod with this dimension. Depolarized dynamic light scattering measurements as a function of angle gave a value of 110 s-1.

引用

页码：1455 / 1461

页数：7