J. Phys. IV France 10 (2000) Pr7-329-Pr7-332
Vibrational dynamics of water molecules confined within trehalose H-bond imposed networks : A Raman responseS. Magazù, C. Branca, A. Faraone, F. Migliardo, P. Migliardo and V. Villari
Dipartimento di Fisica and INFM, Università di Messina, P.O. Box 55, 98166 Messina, Italy
This paper reports the results of a comparative study on the structural properties of water confined within a disaccharide network of homologous disaccharides (trehalose, maltose and sucrose). The findings, obtained by Raman scattering evidence the key role played by disacchaxide-water interaction by H-bond. From the whole results we show that the greater cryoprotective behavior of trehalose can be attributed to its higher destructuring power on the tetrahedral hydrogen-bond network of water and, hence, in its major effectiveness to reduce the amount of freezable water.
© EDP Sciences 2000