Time‐Dependent Colorful Circularly Polarized Organic Ultralong Room Temperature Phosphorescence from a Single‐Component Chiral Molecule

Abstract

AbstractColorful circularly polarized organic ultralong room temperature phosphorescence (CP‐OURTP) materials have attracted much attention due to their superior optoelectronic properties for various applications. However, the development of colorful CP‐OURTP materials in a single‐component molecular system is currently facing great challenges. Herein, a feasible strategy is proposed to develop colorful CP‐OURTP material from a single‐component chiral molecule by introducing a chiral unit into the phosphorescence chromophore. A dual CP‐OURTP band originated from inherent triplet excitons emission showing a lifetime of 946.44 ms and triplet–triplet annihilation induced delayed emission with a short lifetime of 209.91 ms as well as maximum asymmetry factors of ≈10−3 are realized. Owing to the changed OURTP intensity ratios between inherent CP‐OURTP and delayed emission at different delayed times, time‐dependent colorful CP‐OURTP turned from yellow to green is obtained. This study provides a potential platform to prepare circularly polarized material systems showing colorful luminescent properties.