Highly Dissymmetric Circularly Polarized Luminescence via Multimode Chirality Enhancement in Hierarchically Ordered Liquid Crystal Films

Abstract Circularly polarized luminescence (CPL) in purely organic materials is limited by the almost exclusively electric nature of electronic transitions. Resolving this problem is possible through structuring organic materials at dimensions comparable to the wavelength of visible light. Here, the study explores the use of thin films made of chiral organic nanotubes for the enhanced induction of CPL. The study first performs multi‐scale modeling of the chiroptical properties of organic nanotubes using the T‐matrix method. Combined with chiroptical measurements, including Mueller matrix polarimetry, the study discusses the chiroptical properties of organic materials within the frames of their multi‐scale structuring. When embedding aggregation‐induced fluorogens (AIEgens) into the structured films, composites featured with gigantic g lum factors reaching ≈10 −1 are obtained. Importantly, a series of control experiments is performed to exclude common parasitic effects that can lead to the apparent CPL signals. The enhanced chiroptical properties of the composite films of organic nanotubes and AIEgens enable visual discrimination of their handedness both in the absorption and emission realms. The uncovered multi‐mode enhancement of CPL directs future endeavors for anticounterfeiting or holography applications.