Determination of the translational and rotational diffusion coefficients of rodlike particles using depolarized dynamic light scattering

被引：134

作者：

Lehner, D ^{[1
]}

Lindner, H ^{[1
]}

Glatter, O ^{[1
]}

机构：

[1] Graz Univ, Inst Chem, A-8010 Graz, Austria

来源：

LANGMUIR | 2000年 / 16卷 / 04期

关键词：

D O I：

10.1021/la9910273

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Depolarized dynamic light scattering (DDLS) experiments are reported on three different systems: on tobacco mosaic virus as a well investigated sample; on PEO-PPO-PEO triblock copolymer micelles, which show sphere-to-rod transition with increasing temperature; and on a microemulsion of the type water/octane/CiEj. DDLS measurements were performed using highly discriminating polarizers and single-mode fiber detection at different scattering angles, obtaining decay rates Gamma(VH) versus scattering angle. The rotational and translational diffusion coefficients available from these plots were taken to evaluate size parameters of the systems using Broersma's expressions for a stiff rod. Good agreement with theory and literature was found in the case of tobacco mosaic virus and at concentrations below the overlap concentration c* for the other two systems.

引用

页码：1689 / 1695

页数：7

共 51 条

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