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Abstract <p>The Cd(II)–L carboxylate motifs mediated by the bpp ligand afforded a topologically new coordination polymer by hydrothermal reaction, namely, [Cd<sub>2</sub>(L)(bpp)<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub>]·2H<sub>2</sub>O ([1·(H<sub>2</sub>O)<sub>2</sub>]·2H<sub>2</sub>O) (H<sub>4</sub>L&#xa0;=&#xa0;5-(2,3-Dicarboxy phenoxy)isophthalic acid and bpp&#xa0;=&#xa0;1,3-bis(4-pyridyl)propane). It is further characterized by elemental analysis, IR, thermogravimetric analysis (TGA) and fluorescence analysis. The single crystal X-ray diffraction revealed that the structure features the Cd(II)-carboxylate layer motifs cross-linked by the bpp coligands to construct a 3D metal-organic framework with a (4,4,4)-connected {4.5.6<sup>2</sup>.7.8} {4.5<sup>2</sup>.6<sup>2</sup>.8}{5<sup>2</sup>.6<sup>2</sup>.7.8} new framework topology. The TGA shows that the compound exhitits good thermal properties with reversible dehydrated-rehydrated ability without destroying the framework integrity. In addition, the dehydration/rehydration process is accompanied with a&#xa0;unusual phenomenon of fluorescence transfer, which makes it great potential in minimum moisture detection.</p>

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A Topologically New Cd(II) Coordination Polymer with the Reversible Dehydrated-Rehydrated Ability and Concomitant Luminescent Transfer

  • 期刊论文

  • 发表日期：

    2026年7月30日

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  • Y. -P. Li,
  • G. -I. Li,
  • L. -Y. Xin,
  • X. -L. Li,
  • G. -Z. Liu

摘要

Abstract

The Cd(II)–L carboxylate motifs mediated by the bpp ligand afforded a topologically new coordination polymer by hydrothermal reaction, namely, [Cd2(L)(bpp)2(H2O)2]·2H2O ([1·(H2O)2]·2H2O) (H4L = 5-(2,3-Dicarboxy phenoxy)isophthalic acid and bpp = 1,3-bis(4-pyridyl)propane). It is further characterized by elemental analysis, IR, thermogravimetric analysis (TGA) and fluorescence analysis. The single crystal X-ray diffraction revealed that the structure features the Cd(II)-carboxylate layer motifs cross-linked by the bpp coligands to construct a 3D metal-organic framework with a (4,4,4)-connected {4.5.62.7.8} {4.52.62.8}{52.62.7.8} new framework topology. The TGA shows that the compound exhitits good thermal properties with reversible dehydrated-rehydrated ability without destroying the framework integrity. In addition, the dehydration/rehydration process is accompanied with a unusual phenomenon of fluorescence transfer, which makes it great potential in minimum moisture detection.