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<p>Circularly polarized luminescence (CPL) materials have been extensively studied in recent years owing to their widespread applications in 3D display, optical storage, optical anti-counterfeiting, and biological imaging, <i>etc</i>. Copper(I) clusters have emerged as a promising candidate for CPL materials, driven by their cost-effectiveness, superior luminescent properties, precise structure, and low toxicity. Nevertheless, the poor environmental stability of copper(I) clusters renders their synthesis and preservation challenging, thereby significantly impeding their advancement. Herein, we have designed and synthesised a chiral double-coordinated ligand in order to construct copper(I) cluster nodes that can be further assembled. As anticipated, by utilizing stepwise assembly strategy, a Cu<sub>4</sub> cluster node co-modified by chiral alkynyl ligands and triphenylphosphine was further assembled with Cd<sup>2+</sup> ions to obtain 2D layers structure, <b>L/D-Cu</b><sub><b>4</b></sub><b>-Cd</b>. The <b>L/D-Cu</b><sub><b>4</b></sub><b>-Cd</b> exhibits excellent stability and optical properties, including bright yellow emission, solvent-responsive luminescence, and CPL activity with a maximum <i>g</i><sub>lum</sub> up to 2.0 × 10<sup>−3</sup>, which shows potential applications in the WLED and WCP-light. More interestingly, the material also exhibits deflection ability towards different wavelengths of linearly polarized light, showing certain potential in the preparation of circular polarizer.</p>

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Stepwise assembly to construct stable copper(I) cluster-based circularly polarized luminescent MOFs

  • 期刊论文

  • 发表日期：

    2025年1月9日

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  • Jing-Wen Xie,
  • Meng-Ting Wang,
  • Yan Jin,
  • Si Li,
  • Jian-Hua Qin,
  • Shuang-Quan Zang,
  • Tomas C. W. Mak

摘要

Circularly polarized luminescence (CPL) materials have been extensively studied in recent years owing to their widespread applications in 3D display, optical storage, optical anti-counterfeiting, and biological imaging, etc. Copper(I) clusters have emerged as a promising candidate for CPL materials, driven by their cost-effectiveness, superior luminescent properties, precise structure, and low toxicity. Nevertheless, the poor environmental stability of copper(I) clusters renders their synthesis and preservation challenging, thereby significantly impeding their advancement. Herein, we have designed and synthesised a chiral double-coordinated ligand in order to construct copper(I) cluster nodes that can be further assembled. As anticipated, by utilizing stepwise assembly strategy, a Cu4 cluster node co-modified by chiral alkynyl ligands and triphenylphosphine was further assembled with Cd2+ ions to obtain 2D layers structure, L/D-Cu4-Cd. The L/D-Cu4-Cd exhibits excellent stability and optical properties, including bright yellow emission, solvent-responsive luminescence, and CPL activity with a maximum glum up to 2.0 × 10−3, which shows potential applications in the WLED and WCP-light. More interestingly, the material also exhibits deflection ability towards different wavelengths of linearly polarized light, showing certain potential in the preparation of circular polarizer.