Machine learning-based structure‒property modeling for ionic liquids design and screening: A state-of-the-art review
Yijia Shao1, Ziyu Wang1, Lei Wang2, Yunlong Kuai1, Ruxing Gao1, Chundong Zhang2
Author information:
1. School of Energy Science and Engineering, Nanjing Tech University, Nanjing 211816, China
2. State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
Abstract:
With the growing emphasis on sustainable development, the demand for environmentally friendly solvents in green chemical processes and carbon dioxide capture is increasing. Ionic liquids (ILs), as promising green solvents, offer significant potential but face considerable challenges, particularly in solvent selection. To overcome the limitations of traditional screening methods, machine learning (ML) techniques have recently been applied, offering a more efficient and data-driven approach. This review provides an overview of key ML methods used in solvent screening and compares them with traditional experimental and theoretical techniques. It examines the role of descriptor selection in structure‒property-based methods, such as quantitative structure-activity relationships (QSAR) and quantitative structure‒property relationships (QSPR), which are critical for predicting IL properties. The review also explores the application of these methods to screen IL properties, including toxicity, viscosity, density, and CO2 solubility. Additionally, it discusses challenges in selecting appropriate models based on data scale and task complexity, integrating physical information for model interpretability, and achieving multi-objective optimization to balance key properties in ionic liquid (IL) design. Finally, it summarizes the achievements, limitations, and prospects of ML applications in ILs research, offering insights into how these methods can advance the development of sustainable ILs.
Keywords:
machine learning (ML); ionic liquid (IL); structure‒property; molecular descriptors; physical property
Cite this article:
Yijia Shao, Ziyu Wang, Lei Wang, Yunlong Kuai, Ruxing Gao, Chundong Zhang. Machine learning-based structure‒property modeling for ionic liquids design and screening: A state-of-the-art review. Front. Energy, https://doi.org/10.1007/s11708-025-1011-7