Vitrification and Crystallization of Organic Liquids Confined to Nanoscale Pores

摘要: The effect of finite size on the solidification o-terphenyl and benzyl alcohol confined in model controlled pore glass (CPG) materials is described. These two organic liquids form either amorphous glasses or crystalline solids bulk upon cooling, depending rate cooling other factors. behavior liquid pores was studied as a function diameter (4−73 nm), chemical surface treatment CPG degree filling, by differential scanning calorimetry (DSC). We observe that transition, Tg, shifts to lower temperature decreases. This shift independent filling for both alcohol, suggesting reduction density negative pressure not cause observed shift. crystallization also altered confinement strongly depends filling.