Low temperature properties of acetonitrile confined in MCM-41

The effect of confinement on the phase changes and dynamics of acetonitrile in mesoporous MCM-41 was examined by the use of absorption, FT-IR, DSC, and quasi-elastic neutron scattering (QENS) measurements. The measurements indicated that the condensed phase is very similar to the bulk liquid and the phase changes between alpha-type and beta-type acetonitriles were observed below the melting points.