A universal strategy for multicolor organic circularly polarized afterglow materials with high dissymmetry factors.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 40299697.
- Also identified by DOI 10.1073/pnas.2419481122 and PMC identifier 12067217.
- Licence recorded as CC BY-NC-ND.
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Abstract
Materials with pure organic circularly polarized afterglow (CPA) have attracted significant attention due to their spatiotemporal-resolved optical properties, yet achieving simultaneous high dissymmetry factor (glum) and multicolor ultralong emission remains a challenge. Here, we establish a universal energy transfer-photon coupling strategy to realize CPA spanning from blue to red with record-high glum (up to 1.90) and ultralong lifetimes (>6 s). Systematic characterization of nonchiral donor-acceptor systems (TP-BPEA, TP-Fluo, etc.) reveals the absence of ground-state chiral centers (<i>g</i><sub>CD</sub> ≈ 0) and orientation artifacts (<i>LD</i> < 10<sup>-7</sup>), confirming the key role of cholesteric liquid crystal polymer in chirality induction. This spatiotemporal synergy between energy transfer (wavelength modulation) and photonic engineering (polarization control) provides a framework for chiral photonic materials, with potential implications for multidimensional information encryption.