Circularly Polarized Organic Ultralong Room-Temperature Phosphorescence: Generation, Enhancement, and Application

Abstract

Circularly polarized luminescent (CPL) materials have garnered tremendous attention owing to their expanded optical properties beyond emission wavelength and intensity. Among these, the emerging circularly polarized organic ultralong room-temperature phosphorescence (CP-OURTP) materialsdemonstrating elegant and distinct features are of significant importance for their extended emission lifetime, which represent a novel frontier in research with promising scientific and technological applications across diverse fields. This review systematically outlines the traditional strategies to achieve CP-OURTP including organic crystals, copolymerization, host–guest doping, a combination of the copolymerization and host–guest doping, spinning and twisting technology, and supramolecular polymer assembly. Importantly, the recent significant progress of CP-OURTP in the chiral soft materials, such as liquid crystals (LCs) involving lyotropic LCs (cellulose nanocrystals, CNCs) and chiral thermotropic LCs (cholesteric LCs and chiral LC elastomers), is showcased. Finally, the practical applications of CP-OURTP materials are summarized, and the review concludes with the perspectives on the current challenges and future opportunities for CP-OURTP materials. This review aims to inspire the further innovations in the fabrication of advanced CP-OURTP materials and enrich their promising applications.