On the cooling rate effect on the liquid-liquid transition of ionic liquids

The liquid-liquid transition (LLT) is a captivating process where one liquid transforms into another via a first-order transition. Ionic liquids (IL) are a class of systems with excellent glass-forming ability. In recent years, some studies have successively reported LLT in ionic liquids, providing evidence based on thermodynamics, kinetics, and structure. Here, we intend to simultaneously employ small-angle X-ray scattering (SAXS) and wide-angle X-ray scattering (WAXS) to characterize the structural evolution of LLT in ILs. Our emphasis will be on investigating the effect of the liquid cooling rate on the LLT dynamics.

液-液转变（liquid-liquid transition，LLT）是一种引人关注的相变过程，指一种液体通过一级相变转化为另一种液体。离子液体（ionic liquids，IL）是一类具备优异玻璃形成能力的体系。近年来，已有多项研究陆续报道了离子液体中的液-液转变现象，并从热力学、动力学以及结构层面提供了相关证据。本研究拟同时采用小角X射线散射（small-angle X-ray scattering，SAXS）与广角X射线散射（wide-angle X-ray scattering，WAXS）两种技术，对离子液体中液-液转变的结构演化过程进行表征。本研究的重点在于探究液体冷却速率对液-液转变动力学过程的影响。