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

• 成果类型: Article
• 署名作者: Yin, Chenjia; Sun, Siyu; Yan, Zi-Ang; Hu, Honglong; Jiang, Ping; Xu, Zhuoran; Tian, He; Ma, Xiang
• 署名单位: East China University of Science & Technology; East China University of Science & Technology; East China University of Science & Technology
• 刊物名称: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
• ISSN/ISSBN: 0027-15280
• DOI: 10.1073/pnas.2419481122
• 发表日期: 2025-05-06
• 关键词: liquid-crystal

摘要

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 (g(CD) approximate to 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.