The Dynamic Water Crossover in Porous Borosilicate Glasses

The interactions of water molecules with hydration centers at the interfaces affect water’s dynamics, structure, and properties, especially in nanoconfinement. Broadband dielectric spectroscopy (BDS) is a powerful method to investigate the properties of confined water with the access to molecular dynamics at various time and length scales. Porous borosilicate inorganic glasses (hard confinement) with silica gel (SG) globules inside the pores (soft confinement) were studied by BDS in the current research to verify the nature of the water dynamic crossover.