Solvent-Triggered Aggregation-Induced Reversal and Enhancement of Circularly Polarized Luminescence in Chiral Salen Metalla-Macrocycles.

ABSTRACT: Self-assembled metalla-macrocycles can serve as versatile platforms to prepare functional materials. Combined with a predictable structural design, they allow for the embedding of a broad range of properties. A series of dinuclear rings M₂R (M = Zn(II), Co(II/III), R = bis-salen macrocycle) is reported, which combine chirality with aggregation-induced emission (AIE) and chiroptical sign reversal. The modular system forms from three building blocks: i) tetraphenylethylene (TPE) backbones, ii) chiral salen coordination environments, and iii) chelated transition metal ions. The chiroptical properties are modulated by the choice of metal ion, solvent, and the degree of aggregation, with growing intermolecular stacking leading to an increase of the emission intensity. Aggregation of

SUBMITTER: Yan QQ 

PROVIDER: S-EPMC12444834 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature