Bioprotectant glassforming solutions confined in porous silicon nanocapillaries

Rémi Busselez (1) , Ronan Lefort (1) , Qing Ji (1) , Régis Guégan (2) , Gilbert Chahine (1, 3) , Mohammed Guendouz (4) , Jean-Marc Zanotti (3) , Bernhard Frick (5) , Denis Morineau (1)

1 IPR - Institut de Physique de Rennes
2 ISTO - Institut des Sciences de la Terre d'Orléans
3 LLB - UMR 12 - Laboratoire Léon Brillouin
4 FOTON - Fonctions Optiques pour les Technologies de l'informatiON
5 ILL - Institut Laue-Langevin

Glycerol and trehalose-glycerol binary solutions are glass-forming liquids with remarkable bioprotectant properties. In this paper, we address the effects of confining of these solutions in straight channels of diameter D=8 nm formed by porous silicon. Neutron diffraction and incoherent quasielastic neutron scattering are used to reveal the different effects of nanoconfinement and addition of trehalose on the intermolecular structure and molecular dynamics of the liquid and glassy phases, on a nanosecond timescale.

Domaines: Matière Molle [cond-mat.soft]

Rémi Busselez, Ronan Lefort, Qing Ji, Régis Guégan, Gilbert Chahine, et al.. Bioprotectant glassforming solutions confined in porous silicon nanocapillaries. European Materials Research Society Fall Meeting 2008 (E-MRS Fall Meeting 2008), Sep 2008, Varsovie, Poland. pp.E. ⟨hal-00355950v2⟩