Crystallization Kinetics of Phosphonium Ionic Liquids: Effect of Cation Alkyl Chain Length and Thermal History.

ABSTRACT: The effects of alkyl chain length on the crystallization kinetics and ion mobility of tetraalkylphosphonium, [P_666,n][TFSI], (n = 2, 6, 8, and 12) ionic liquids were studied by differential scanning calorimetry (DSC) and broadband dielectric spectroscopy (BDS) over a wide temperature range. The liquid-glass transition temperature (T_g) and ion dynamics examined over a broad T range were almost insensitive to structural modifications of the phosphonium cation. In contrast, the crystallization kinetics were strongly affected by the length of the fourth alkyl chain. Furthermore, the thermal history of the sample (cold vs melt crystallization) significantly impacted the crystallization rate. It has been found that the nature of crystallization p

SUBMITTER: Yao B 

PROVIDER: S-EPMC11247483 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature