Chiral Ionic Liquids in Chiral Recognition Methods Using Spectroscopic Techniques

Chiral recognition and separation methods have received a lot of attention due to the growing need for pure enantiomeric forms of substances. The separation of enantiomers is usually done with the aid of a chiral selector. Numerous chiral selectors, such as crown ethers, polysaccharides, antibiotics, etc., are extensively used in enantiomeric recognition studies; nevertheless, each one of them has limitations of its own. Recently, chiral ionic liquids (CILs), having inherent chirality due to the presence of a chiral cation or anion, have emerged as inexpensive and lucrative chiral selectors for enantiomeric recognition procedures. This article discusses the application of CILs in chiral recognition methods through spectroscopic techniques like UV-visible, NMR, and fluorescence spectroscopy. It also focuses on the mechanism behind chiral recognition.