Raman spectroscopy offers new insights into ionic liquid acidity

Researchers at the University of Liège have for the first time determined the acidity of ionic liquids using Raman spectroscopy, thanks to Hammett acidity functions. This advance promises to revolutionize our understanding and use of these organic solvents, in which dissolved acids can be remarkably more acidic than in water, with an acidity that can be up to 100 million times greater.