Circularly Polarized Luminescence from Bischromophoric Cyanostilbene-Derived Homochiral Nanostructures in Solution

Abstract

Herein, we present the self-assembly and chiroptical properties of enantiomeric bischromophoric molecules consisting of trans-(1,2)-cyclohexanediamide as the chiral core and cyanostilbene derivative as the fluorescent chromophores. These enantiomers form diverse organic nanostructures, such as vesicles and two-dimensional sheets, in non-polar solvents, exhibiting circularly polarized luminescence (CPL) with a remarkable luminescence dissymmetry factor, |glum|, in solution. Detailed spectroscopic probing reveals the formation of supramolecular conglomerate assemblies from its racemic mixture of monomers due to the chirality mismatch of the core.