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<p>In this study, we report the solvent-controlled synthesis of two novel Cd-MOFs using 4,4′-(hydroxyphosphoryl) dibenzoic acid (H<sub>2</sub>hpda) as a multifunctional phosphorus-containing ligand. By modulating the solvent polarity—using either DMF or DMA/H<sub>2</sub>O mixtures—we successfully obtained two distinct architectures: a 2D layered structure (CJLU-L4) and a 3D porous framework (CJLU-L5).Single-crystal X-ray diffraction analysis revealed that CJLU-L4 adopts a 2D layered structure with a porosity of 37.6%, whereas CJLU-L5 exhibits a 3D network structure with a significantly higher porosity of 57.7%. The phase purity of both cadmium-based MOFs was confirmed by powder X-ray diffraction (PXRD) and infraredspectroscopy (IR). Photoluminescence studies showed that the PL intensity of CJLU-L5 was lower, indicating that the framework dimension has an important influence on adjusting the optoelectronic properties of MOF.</p>

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Solvent assisted synthesis and characterization of 2D and 3D cadmium metal–organic framework

  • 期刊论文

  • 发表日期：

    2025年6月21日

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  • Xiao-Fei Wang,
  • Chen-Hao Bao,
  • Sa-Sa Xia,
  • Yuxing Cai,
  • Xu-Sheng Wang,
  • Jing Sun,
  • Lige Qiao,
  • Lan Li,
  • Zhi Chen

摘要

In this study, we report the solvent-controlled synthesis of two novel Cd-MOFs using 4,4′-(hydroxyphosphoryl) dibenzoic acid (H2hpda) as a multifunctional phosphorus-containing ligand. By modulating the solvent polarity—using either DMF or DMA/H2O mixtures—we successfully obtained two distinct architectures: a 2D layered structure (CJLU-L4) and a 3D porous framework (CJLU-L5).Single-crystal X-ray diffraction analysis revealed that CJLU-L4 adopts a 2D layered structure with a porosity of 37.6%, whereas CJLU-L5 exhibits a 3D network structure with a significantly higher porosity of 57.7%. The phase purity of both cadmium-based MOFs was confirmed by powder X-ray diffraction (PXRD) and infraredspectroscopy (IR). Photoluminescence studies showed that the PL intensity of CJLU-L5 was lower, indicating that the framework dimension has an important influence on adjusting the optoelectronic properties of MOF.