The slow dynamics of some hydrogen bonded glass-forming liquids has been investigated by broadband dielectric spectroscopy. We show that the polyalcohols glycerol, xylitol, and sorbitol, and mixtures of glycerol and water, and in fact, even pure water exhibit a process of Debye character at longer t
✦ LIBER ✦
Dynamical response and H-bond effects in confined liquid water
✍ Scribed by V. Crupi; S. Magazù; D. Majolino; G. Maisano; P. Migliardo
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 665 KB
- Volume
- 80
- Category
- Article
- ISSN
- 0167-7322
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✦ Synopsis
An analysis of Rayleigh wing and Raman scattering data performed in water confined in a nanoporous GelSil matrix, is presented. In the restricted translational region, the results show a strong modification of the vibrational dynamics of water in the confined state, with the disappearance of the 60 cm "1 and 170 em -1 lattice bands in the VDOS. Furthermore, the collective contribution to the polarised OH stretching band comes down indicating that the tetrabonded network is destroyed.
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