Macromolecular Chemistry and Physics, Год журнала: 2025, Номер unknown

Опубликована: Апрель 14, 2025

Abstract Circularly polarized luminescence (CPL) materials have garnered considerable attention for applications in optical data storage, anti‐counterfeiting, and photonic devices. However, precisely controlling over chirality emissive properties of chiral luminescent polymers remains challenging. Herein, this work presents a series polyether‐based liquid crystalline copolymers (LCPs), denoted Cy x Ch y , synthesized via organocatalyzed ring‐opening copolymerization epoxides bearing cyanostilbene (Cy) cholesterol (Ch) units. The resulting exhibit controlled molar masses, narrow distributions, excellent thermal stability. crystal phase transitions tunable behavior dependent on content, progressing sequentially from nematic 4 1 3 2 to smectic ultimately . Notably, efficient π–π interactions moieties confer pronounced photoluminescence, with emission shifting shorter wavelengths as the proportion decreases. Simultaneously, segments introduce strong CPL signals, achieving |glum| values up 0.28 specific compositions. Remarkably, signal inversion is observed at 4:1 Cy:Ch ratio due selective Bragg reflection within self‐assembled copolymer matrix. These results demonstrate versatile pathway advanced LCPs robust activity, heralding new opportunities high‐performance optoelectronic technologies.

Язык: Английский