Enhanced Circularly Polarized Luminescence Induced by Efficient Stacking of Axial Chiral Molecules in Liquid Crystal Polymer Films

Endowing liquid crystal polymers with chirality and luminescence is a powerful strategy to address the low luminescence asymmetry factor (glum) of organic circularly polarized luminescence (CPL) films. However, the mechanism of chiral transfer and amplification in the multicomponent stacking mode of polymers, exogenous chiral molecules, and fluorescent dyes remains a challenge. Here, CPL films with high glum values were obtained by controlling the stacking modes of the three components. Employing axial chiral 1,1′-bi-2-naphthol as a dopant allowed for more efficient chiral induction due to its favorable H-aggregation self-assembly and additional π–π interactions with achiral components, resulting in CPL films with a considerable glum value of 0.57. This work provides insights into understanding chiral transfer and amplification in multicomponent stacking modes and offers a flexible approach to the design of advanced CPL materials.