title: A femtosecond mid-infrared study of the dynamics of water in aqueous sugar solutions.
abstract: We study the effect of the sugars glucose, trehalose and sorbitol on the reorientation dynamics of water molecules, using polarization-resolved femtosecond infrared spectroscopy. We find that at all sugar concentrations the water dynamics can be described by a single reorientation time constant. With increasing carbohydrate concentration, the water reorientation time constant increases from 2.5 picoseconds to a value of about 15 picoseconds. The slowing down of the water dynamics is strongest for trehalose, followed by glucose and sorbitol.
authors: FOM Institute AMOLF, Science Park 104, 1098 XG, Amsterdam, The Netherlands. cgroot@amolf.nl.
authors: C C M
authors: CC
authors: Groot
authors: H J
authors: HJ
authors: Bakker
mesh_terms: D002241:Carbohydrates / Q000737:chemistry*; D005947:Glucose / Q000737:chemistry; D056004:Molecular Dynamics Simulation; D012996:Solutions / Q000737:chemistry; D013012:Sorbitol / Q000737:chemistry; D013055:Spectrophotometry, Infrared; D013997:Time Factors; D014199:Trehalose / Q000737:chemistry; D014867:Water / Q000737:chemistry*
chemical_list: D002241:Carbohydrates; D012996:Solutions; D014867:Water; D013012:Sorbitol; D014199:Trehalose; D005947:Glucose