Relaxation dynamics of H-bonded liquids confined in porous silica gels by Rayleigh wing spectroscopy

被引：48

作者：

Carini, G

Crupi, V

DAngelo, G

Majolino, D

Migliardo, P

Melnichenko, YB

机构：

[1] INFM, I-98166 SANT AGATA, MESSINA, ITALY

[2] OAK RIDGE NATL LAB, OAK RIDGE, TN 37831 USA

来源：

JOURNAL OF CHEMICAL PHYSICS | 1997年 / 107卷 / 07期

关键词：

D O I：

10.1063/1.474605

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：

Reorientational dynamics of neat liquid propylene glycol molecules is compared with that of confined molecules in 25 and 75 Angstrom pores of a sol-gel porous glass by means of depolarized light-scattering spectroscopy. The experimental spectra. performed as a function of temperature, show unambiguously the slowing down of the collective reorientational processes triggered by the confinement effects. Such results confirm the main role played by the strong dipolar interactions on the dynamics of hydrogen-bonded liquids diffusing within nanoscopic spherical pores. (C) 1997 American Institute of Physics.

引用

页码：2292 / 2299

页数：8

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