Enantioselective Precipitation and Solid‐State Fluorescence Enhancement in the Recognition of α‐Hydroxycarboxylic Acids

Abstract

Unusually sensitive: A chiral sensor based on 1,1′-bi-2-naphthol was prepared, which can provide visual enantioselective discrimination of α-hydroxycarboxylic acids. When the sensor and the acid have matched configurations, an enantioselective precipitation occurs, which is accompanied by a dramatic (over 950-fold) solid-state fluorescence enhancement (see picture).