Dear Colleagues,

Low-temperature molten salts—ionic liquids (IL)—and deep eutectic solvents, due to their unique and advantageous physical-chemical properties, have been at the forefront of relevant scientific innovation for a wide range of applications. The dual ionic and organic nature of ionic liquids and deep eutectic solvents is characterized by a complex microscopic heterogeneous structure and the core of their unpaired properties; however, the structure–function relationship is still a blurry landscape. In many fields of chemistry and physics, it is critical to understand the bulk and interfacial organization of dense ionic fluids, thus giving new insight into their unique properties.

Despite these designable solvents having gained popularity as sustainable green solvents for ionic liquid-based technology, their widespread application at a larger scale still faces relevant techno-economic challenges. In order to become a cost-effective solution in the future, these challenges must be addressed, particularly the need to scale up production and implement at a large scale, as well as establishing cost and availability, stability, recovery, and recycling of air- and water-stable novel liquids.

The main aim of this Special Issue is to publish original research articles on the recent current state and future trends in the field of ionic liquids, ensuring coverage of both the scientific fundaments and industrial applications. This issue will contribute to rationalizing both fundamental and applied findings and to understanding the role of IL structure in its performance, synthesis, properties, environmental impact, application frontiers and technologies.

Dr. Renata Costa
Prof. Dr. Carlos Pereira
Guest Editors

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• ionic liquids
• dense ionic fluids
• green solvents
• physical-chemical properties
• electrolytes
• design solvents
• bulk properties
• interfacial properties
• molecular modeling and simulation
• molecular-level interactions
• catalysis
• analytical chemistry
• reaction media
• organic chemistry