On–Off Switching of the Novel Thermochromic Chiroptical Behavior of Pseudoisocyanine Driven by Association/Dissociation

Abstract

Abstract The compound 1,1′-diethyl-2,2′-cyanine iodide forms a chiral fluorescent self-aggregate in aqueous solution at high salt concentration. This compound shows reversible quenching and emitting behaviors and exhibits an interesting on–off switching of thermochromic circularly polarized luminescence behavior as a result of the association–dissociation process.