Mismatching in Meso-/Microscopic Orientation Drives Optical Anisotropy to Unlock Multicolor Nonreciprocal Circularly Polarized Luminescence in Chiral Polymer Elastomeric Films

• • Stretching chiral TPU/R-S-PSA elastomeric films induces LD-LB coupling, yielding nonreciprocal CD with opposite signals from opposite sides; unstretched films show reciprocal CPL with |glum| = 10⁻¹, while stretched films achieve nonreciprocal CPL with |glum| = 10⁻². • • The introduction of fluorescent groups enables f-LB coupling with matrix crystallization, enabling multicolor nonreciprocal CPL—a critical step for wavelength-multiplexed optical encryption and logic operations. • • The nonreciprocal CPL films function as chiral logic gates and multidimensional encryption systems, demonstrating a route to smart photonic devices with switchable chiroptical responses. • • The films serve as enantioselective photopolymerization platforms, leveraging nonreciprocal CPL to drive asymmetric reactions—an industrially relevant application for producing chiral polymers with controlled handedness.