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. 2025 May 6;122(18):e2419481122.
doi: 10.1073/pnas.2419481122. Epub 2025 Apr 29.

A universal strategy for multicolor organic circularly polarized afterglow materials with high dissymmetry factors

Chenjia Yin #  1 , Siyu Sun #  1 , Zi-Ang Yan  1 , Honglong Hu  1   2 , Ping Jiang  1 , Zhuoran Xu  1 , He Tian  1 , Xiang Ma  1
Affiliations

A universal strategy for multicolor organic circularly polarized afterglow materials with high dissymmetry factors

Chenjia Yin et al. Proc Natl Acad Sci U S A. .

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 (gCD ≈ 0) and orientation artifacts (LD < 10-7), 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.

Keywords: afterglow; circularly polarized luminescence; liquid crystal; room-temperature phosphorescence.

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Conflict of interest statement

Competing interests statement:C.Y., Z.-A.Y., H.T., and X.M. are inventors on a provisional patent application related to this work that has been filed by the East China University of Science and Technology (Patent No.: 202411179705.4).

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