Correction to "Stability of the Liquid State of Imidazolium-Based Ionic Liquids under High Pressure at Room Temperature".
JOURNAL OF PHYSICAL CHEMISTRY B(2021)
摘要
To understand the stability of the liquid phase of ionic liquids under high pressure, we investigated the phase behavior of a series of 1-alkyl-3-methylimidazolium tetrafluoroborate ([C(n)mim] [BPS4]) homologues with different alkyl chain lengths for 2 <= n <= 8 up to similar to 7 GPa at room temperature: The ionic liquids exhibited complicated phase behavior, which was likely due to the conformational flexibility in the alkyl chain. The present results reveal that [C(n)mim] [BF4] falls into superpressed state around 2-3 GPa range upon compression with an implication of multiple phase Or structural transitions to similar to 7 GPa. Remarkably, a characteristic nanostructural organization in ionic liquids largely diminishes at the superpressed state. The behaviors of imidazolium-based ionic liquids can be classified into, at least, three patterns: (1) pressure-induced crystallization, (2) superpressurization upon compression, and (3) decompression-induced crystallization from the superpressurized glass. Interestingly, the high-pressure phase behavior was relevant to the glass transition behavior at low temperatures and ambient pressure. As n increases, the glass transition pressure (p(g)) decreases (from 2.8 GPa to similar to 2 GPa), and the glass transition temperature increases. The results indicate that the p-T range of the liquid phase is regulated by the alkyl chain length of [C(n)mim][BF4] homologues.
更多查看译文
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要