Effect of reverse micelle size on the librational band of confined water and methanol

Authors
Venables, DS Huang, K Schmuttenmaer, CA
Citation
Ds. Venables et al., Effect of reverse micelle size on the librational band of confined water and methanol, J PHYS CH B, 105(38), 2001, pp. 9132-9138
Citations number
35
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
JOURNAL OF PHYSICAL CHEMISTRY B
ISSN journal
15206106 → ACNP
Volume
105
Issue
38
Year of publication
2001
Pages
9132 - 9138
Database
ISI
SICI code
1520-6106(20010927)105:38<9132:EORMSO>2.0.ZU;2-8
Abstract
We report measurement of the OH librational band in nanoscopic pools of wat er and methanol confined within reverse micelles. The librational band, whi ch peaks near 670 cm(-1) in the bulk liquids, shifts to lower frequency as the reverse micelle size decreases. In addition, the shape of the band chan ges considerably as a function of decreasing size. The librational band at all compositions is well fit by a two-state model based on the relative fra ctions of bound and free water (or methanol) within the reverse micelles.