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<p>Circularly polarized luminescence (CPL) is a key enabling technology for next-generation photonics, yet developing materials combining high stability, brightness, and dissymmetry factor (<i>g</i><sub>lum</sub>) remains a formidable challenge. A promising strategy involves solidifying highly-ordered emissive liquid crystals into robust polymer networks, but this process is often hindered by polymerization-induced stress that destroys the delicate chiral architecture. Here, we establish design principles to overcome this paradox through a synergistic co-design of monomer and network. We discover that fluorene-based monomers combining core planarity and segmental flexibility facilitate near-ideal helical assembly, achieving an exceptional fluidic <i>g</i><sub>lum</sub> of 0.60. Critically, employing a topologically-matched bifunctional crosslinker minimizes network stress, successfully preserving this elite performance to yield a robust thermoset with a record-high final <i>g</i><sub>lum</sub> of 0.54. In this work, we show that this rational strategy effectively bridges the gap between ideal fluidic systems and practical solid-state materials, paving the way for advanced chiroptical applications.</p>

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Achieving robust cholesteric liquid crystal polymer networks with high luminescence dissymmetry factor

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年5月16日

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  • Xiaomei Wu,
  • Yuxia Zhang,
  • Xiao Wang,
  • Jing Zhang,
  • Xinpeng Chu,
  • Min Xiao,
  • Zhongxing Geng,
  • Shujuan Liu,
  • Yun Ma,
  • Qiang Zhao

摘要

Circularly polarized luminescence (CPL) is a key enabling technology for next-generation photonics, yet developing materials combining high stability, brightness, and dissymmetry factor (glum) remains a formidable challenge. A promising strategy involves solidifying highly-ordered emissive liquid crystals into robust polymer networks, but this process is often hindered by polymerization-induced stress that destroys the delicate chiral architecture. Here, we establish design principles to overcome this paradox through a synergistic co-design of monomer and network. We discover that fluorene-based monomers combining core planarity and segmental flexibility facilitate near-ideal helical assembly, achieving an exceptional fluidic glum of 0.60. Critically, employing a topologically-matched bifunctional crosslinker minimizes network stress, successfully preserving this elite performance to yield a robust thermoset with a record-high final glum of 0.54. In this work, we show that this rational strategy effectively bridges the gap between ideal fluidic systems and practical solid-state materials, paving the way for advanced chiroptical applications.