Molecular dynamics of glucose in solution: a quasielastic neutron scattering study.
The molecular dynamics of glucose dissolved in heavy water have been investigated at 280 K by the technique of quasielastic neutron scattering. The scattering was described by a dynamic structure factor that accounts for decoupled diffusive jumps and free rotational motions of the glucose molecules. With increasing glucose concentration, the diffusion constant decreases by a factor five and the time between jumps increases considerably. Our observations validate theoretical predictions concerning the impact of concentration on the environment of a glucose molecule and the formation of cages made by neighboring glucose molecules at higher concentrations.
Argonne National Laboratory, Illinois 60439, USA.
Luis J
LJ
Smith
David L
DL
Price
Zema
Z
Chowdhuri
John W
JW
Brady
Marie-Louise
ML
Saboungi
D004058:Diffusion; D004735:Energy Transfer; D005947:Glucose / Q000737:chemistry*; D008968:Molecular Conformation; D009502:Neutrons; D012399:Rotation; D012542:Scattering, Radiation; D013696:Temperature
D005947:Glucose