ROTATIONAL DIFFUSION OF LIQUID TOLUENE IN CONFINED GEOMETRY

被引：37

作者：

LIU, G ^{[1
]}

MACKOWIAK, M ^{[1
]}

LI, Y ^{[1
]}

JONAS, J ^{[1
]}

机构：

[1] UNIV ILLINOIS,MAT RES LAB,URBANA,IL 61801

来源：

JOURNAL OF CHEMICAL PHYSICS | 1991年 / 94卷 / 01期

关键词：

D O I：

10.1063/1.460381

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 effects of geometrical confinement on the molecular dynamics of liquid toluene in porous sol-gel silica glasses have been studied by the NMR method. The NMR deuteron spin-lattice relaxation times for toluene-d8, ortho-toluene-d1, and para-toluene-d1 were measured as a function of temperature for bulk and confined liquids. The rotational diffusion tensors for overall, internal, and anisotropic rotational diffusion have been determined. The effect of geometrical confinement results in a considerable decrease of the rotational diffusion constants and leads to a lowering of the symmetry of the anisotropic rotational diffusion tensor.

引用

页码：239 / 242

页数：4

共 12 条

[1] MEASUREMENT OF QUADRUPOLE COUPLING-CONSTANT AND ASYMMETRY PARAMETER OF RING DEUTERONS IN SEVERAL DEUTERATED BENZENE DERIVATIVES [J].