Chiral Fluorescent Receptors Based on (R)‐1,1′‐Binaphthylene‐2,2′‐bisthiourea: Synthesis and Chiral Recognition

Abstract

AbstractTwo chiral fluorescent receptors 1 and 2 based on (R)‐1,1′‐binaphthylene‐2,2′‐bisthiourea were synthesized, and their chiral recognition properties for enantiomeric mandelate anions were studied by fluorescence spectra and molecular modeling. Addition of the L‐ and D‐mandelate anions caused considerable fluorescent increases in the fluorescent intensity of the host solution. The L‐enantiomer can enhance the fluorescence intensity of 1 much more than the D‐enantiomer can do, and 1 shows a better enantioselective recognition ability than 2.