Solvent-Assembled Chiral Molecular Aggregates for Dual Energy and Chirality Transfer: Boosting the Circularly Polarized Luminescence

Achieving a high luminescence dissymmetry factor ( g lum ) is a key challenge in developing organic circularly polarized luminescence (CPL) materials. Inspired by hierarchical self-assembly and light-harvesting systems, we report a two-step chirality amplification strategy that combines solvent-induced assembly control with dual energy and chirality transfer. The chiral small molecule S(R)-HDTDP first self-assembles into highly ordered supramolecular aggregates with significantly enhanced intermolecular coupling, leading to a substantial boost of the CPL signal. Subsequently, coassembly with the achiral acceptor Coumarin 6 enables efficient energy transfer and concomitant chirality transfer, further amplifying the g lum while tuning the emission color. This work demonstrates a facile yet powerful approach to sequentially magnify chiroptical responses via supramolecular engineering, offering new insights for designing high-performance CPL materials.