Yin Chenjia, Sun Siyu, Yan Zi-Ang, Hu Honglong, Jiang Ping, Xu Zhuoran, Tian He, Ma Xiang
Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China.
Department of Optoelectronic Information Science and Engineering, School of Physics, East China University of Science and Technology, Shanghai 200237, People's Republic of China.
Proc Natl Acad Sci U S A. 2025 May 6;122(18):e2419481122. doi: 10.1073/pnas.2419481122. Epub 2025 Apr 29.
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 ( ≈ 0) and orientation artifacts ( < 10), 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.
具有纯有机圆偏振余辉(CPA)的材料因其时空分辨光学特性而备受关注,然而,实现同时具有高不对称因子(glum)和多色超长发射仍然是一个挑战。在此,我们建立了一种通用的能量转移-光子耦合策略,以实现从蓝色到红色的CPA,其glum创纪录地高(高达1.90)且寿命超长(>6秒)。对非手性供体-受体体系(TP-BPEA、TP-Fluo等)的系统表征表明不存在基态手性中心(≈0)和取向伪影(<10),证实了胆甾相液晶聚合物在手性诱导中的关键作用。这种能量转移(波长调制)和光子工程(偏振控制)之间的时空协同作用为手性光子材料提供了一个框架,对多维信息加密具有潜在意义。