Choline-amino acid ionic liquids: past and recent achievements about the structure and properties of these really “green” chemicals
The structure of choline-amino acid ionic liquids, atoxic task-specific solvents composed of materials originated from renewable feedstocks, is reviewed in this letter. The varied and strong interactions that these liquids are capable of establishing are largely dependent on their structure, and confer them outstanding solvating properties with respect to a large number of different solutes.