Unconventional assemblies of bisacylhydrazones: The role of water for circularly polarized luminescence

Understanding the precise molecular arrangement of chiral supramolecular polymers is essential not only to comprehend complex superstructures like proteins and DNA but also for development next-generation optoelectronic materials, including materials displaying high-performance circularly polarized luminescence (CPL). Herein, we report first polymer systems based on hydrazone–pyridinium conjugates comprising alkyl chains different lengths, which afforded control apparent chirality. Although chirality governed basically by remote centers chains, helicity inversion was achieved controlling conditions under hydrazone building blocks underwent aggregation (i.e., solvent compositions or temperature). More importantly, addition water system led aggregation-induced deprotonation, resulted in a completely self-assembly behavior. Structural molecules played an role, forming assembly's channel-like backbone, around gathered as result hydrogen bonding interactions. Further co-assembly achiral luminophore with given allowed fabrication novel CPL-active hydrazone-based material exhibiting high maximum value photoluminescence dissymmetry factor −2.6 × 10−2.