Achieving Photo-Activated Circularly Polarized Room Temperature Phosphorescence from Natural Biopolymers.

ABSTRACT: Developing sustainable photo-activated circularly polarized room temperature phosphorescent (CPRTP) materials is attractive for optoelectronic applications while are difficult to achieve. Here, we report the first example of bio-based photo-activated CPRTP material by anchoring arylboronic acids into hydroxypropyl cellulose (HPC) matrix via B─O covalent bonding. The rigid environment provided by B─O covalent bonds and hydrogen bonds stabilizes the triplet excitons, the residual oxygen is consumed upon continuous UV light irradiation, enabling photo-activated CPRTP with multi-color, high-dissymmetry factor (g_{l um} up to -0.43) and prolonged lifetime from 0.22 ms to 1.57 s. More interestingly, by controlling the drying kinetics, HPC films exhibit tunable and dynamic swit

SUBMITTER: Cao S 

PROVIDER: S-EPMC12915112 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature