Induced circular dichroism detection of chiral ammonium guests through inclusion in calix[n]arene cavities
Abstract
p-Sulfonatocalix[n]arenes include chiral quaternary ammonium guests in water and give the induced circular dichroism (ICD) spectra specific to the guest chirality and shape; the ICD bands arise from guest-induced asymmetric deformation of the benzene array in calix[n]arenes.