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<p>Self-assembly offers a versatile route to circularly polarized luminescence (CPL), yet achieving concurrent amplification of CPL and high emission efficiency remains challenging. Here we report a chiral reticular chemistry strategy for creating homochiral porous metal–organic frameworks (MOFs) as efficient CPL-active materials. By co-assembling enantiopure <i>R/S</i>-binol with achiral luminescent ligands, three pairs of enantiomeric pillar-layered MOFs were synthesized, exhibiting significantly amplified CPL responses. Remarkably, the dissymmetry factor ∣g<sub>lum</sub>∣ values are enhanced by up to two orders of magnitude compared with the free ligands, reaching levels comparable to state-of-the-art chiral assemblies, while maintaining high photoluminescence efficiencies (<i>Φ</i><sub>PL</sub> up to 67%). Mechanistic investigations reveal that the CPL originates primarily from the global chirality of the hierarchical frameworks rather than the intrinsic chirality of the precursors. This work establishes a robust design principle for porous CPL-active materials, offering new insights into chirality transfer and opening avenues to integrate strong luminescence with stable chirality in extended frameworks.</p>

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Global chirality in pillar-layered metal-organic frameworks amplifies circularly polarized luminescence

  • 期刊论文

  • 发表日期：

    2026年2月11日

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  • Xiangxiang Zhao,
  • Weihai Li,
  • Yan Liu,
  • Yong Cui,
  • Wenqiang Zhang

摘要

Self-assembly offers a versatile route to circularly polarized luminescence (CPL), yet achieving concurrent amplification of CPL and high emission efficiency remains challenging. Here we report a chiral reticular chemistry strategy for creating homochiral porous metal–organic frameworks (MOFs) as efficient CPL-active materials. By co-assembling enantiopure R/S-binol with achiral luminescent ligands, three pairs of enantiomeric pillar-layered MOFs were synthesized, exhibiting significantly amplified CPL responses. Remarkably, the dissymmetry factor ∣glum∣ values are enhanced by up to two orders of magnitude compared with the free ligands, reaching levels comparable to state-of-the-art chiral assemblies, while maintaining high photoluminescence efficiencies (ΦPL up to 67%). Mechanistic investigations reveal that the CPL originates primarily from the global chirality of the hierarchical frameworks rather than the intrinsic chirality of the precursors. This work establishes a robust design principle for porous CPL-active materials, offering new insights into chirality transfer and opening avenues to integrate strong luminescence with stable chirality in extended frameworks.