In principle, the properties of a DES depend upon the choice of HBA and HBD, which should make it possible to "tune" the properties of a DES. For example, incorporating a chiral HBA or HBD will result in a chiral DES solvent. Given the importance of chirality in chemistry and biochemistry, it could be useful to develop new chiral DES and/or eutectic mixtures for chiral applications. There are a number of recent studies of chiral DES used in asymmetric synthesis, chiral separations, and circularly polarized light emitting materials. Despite these reports, there are still a large number of possible chiral HBA and HBDs and lack of predictive capability make finding new chiral DES a time-consuming process of trial and error.