THE INFLUENCE OF WAVE VECTOR DEPENDENT DIELECTRIC-PROPERTIES ON ROTATIONAL FRICTION - ROTATIONAL DIFFUSION OF PHENOXAZINE DYES

被引：68

作者：

ALAVI, DS ^{[1
]}

HARTMAN, RS ^{[1
]}

WALDECK, DH ^{[1
]}

机构：

[1] UNIV PITTSBURGH,DEPT CHEM,PITTSBURGH,PA 15260

来源：

JOURNAL OF CHEMICAL PHYSICS | 1991年 / 95卷 / 09期

关键词：

D O I：

10.1063/1.461788

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The rotational diffusion of three mechanically similar phenoxazine dyes possessing distinct electrical properties was studied in isopropanol. The results, along with previously presented results from other polar solvents, were analyzed in terms of continuum theories for rotational dielectric friction. It was found that a continuum based theory can account for the observed rotational relaxation dynamics, but only with realistic modeling of the solute charge distribution (not a point dipole), and by accounting for both frequency and wave vector dependences of the solvent dielectric properties.

引用

页码：6770 / 6783

页数：14

共 82 条

[1]

AKHADOV YY, 1980, DIELECTRIC PROPERTIE

[2] A TEST OF HYDRODYNAMICS IN BINARY SOLVENT SYSTEMS - ROTATIONAL DIFFUSION STUDIES OF OXAZINE-118 [J].