Photopolymerized helical acrylate networks enable stable and full-color circularly polarized luminescence in perovskite nanocrystals

Abstract

Photopolymerized chiral polymer frameworks offer an unexplored strategy to couple structural confinement with optical activity in hybrid materials. Here, we introduce a confinement-driven design in which a photopolymerized hydrophobic helical acrylate network (DPAHA) simultaneously stabilizes and imparts chirality to all-inorganic CsPbX₃ (X = Cl, Br, I) perovskite nanocrystals. The polymer forms rigid, non-centrosymmetric cavities that asymmetrically confine the nanocrystals, generating pronounced circular dichroism and circularly polarized luminescence (CPL) spanning the full visible spectrum. Unlike ligand or supramolecular approaches limited by desorption or fragility, photopolymerized confinement ensures durable chiral organization and long-term stability (>6 months). Remarkably, compositional tuning enables handedness inversion and emission-color control from blue to red. This study establishes a general principle for chirality transfer through asymmetric confinement, transforming achiral perovskite emitters into robust, full-color CPL sources. The strategy introduces photopolymerized chiral networks as a versatile platform for scalable, stable, and tunable chiroptical materials for photonic and spintronic applications.