作者: Christopher M. Burba , Eric D. Butson , Justin R. Atchley , Mioto Sato Johnson
DOI: 10.1021/JP409243B
关键词: Electrolyte 、 Electron paramagnetic resonance 、 Conductivity 、 Analytical chemistry 、 Ionic bonding 、 Inorganic chemistry 、 Melting point 、 Chemistry 、 Dimethyl carbonate 、 Lithium tetrafluoroborate 、 Mesoporous silica
摘要: Solutions of lithium tetrafluoroborate dissolved in dimethyl carbonate (DMC) are confined within MCM-41, a mesoporous silica matrix. Thermal measurements indicate that the melting points pure DMC and solutions significantly reduced when pores MCM-41 compared to unconfined samples; this is an observation consistent with Gibbs–Thomson equation. The point onsets slightly lower than DMC, suggesting salts impact phase-transition temperature silica. Rotational dynamics explored by doping small quantities Tempone, electron paramagnetic resonance (EPR)-active spin probe. Tempone rotational correlation times order magnitude slower for liquids solutions. Temperature-dependent conductivity composite materials suggest liquid electrolyte solution dis...