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Abstract <p>Two novel Pb(II) 2D/3D coordination polymers using different functional ligand, namely [Pb<sub>2</sub>(nbca)<sub>2</sub>]<sub><i>n</i></sub> (<b>I</b>) and [Pb<sub>0.5</sub>(dcia)]<sub><i>n</i></sub> (<b>II</b>), have been synthesized by the hydrothermal reaction and characterized by single crystal X-ray diffraction, powder X-ray diffraction, IR spectroscopy, thermogravimetric analysis, and fluorescent spectra (nbca is 2,3-norbornanedicarboxylic acid; dcia is 3,5-dichloroisonicotinic acid anion). The single-crystal X-ray diffractions reveal that two complexes exhibit different networks displaying remarked structural sensitivity to functionalized ligands. Among them, complex <b>I</b> crystallizes in monoclinic crystal system, space group <i>P</i>2<sub>1</sub>/<i>c</i> and features a two-dimensional pyknotic layer structure. Whereas the complex <b>II</b> crystallizes in Tetragonal crystal system, space group <i>P</i>4<sub>2</sub>/<i>n</i> and features a 3D (3,6)-connected <Emphasis Type="BoldItalic">jxj</Emphasis> topology with the Schläfli symbol of {4<sup>2</sup>.6}<sub>2</sub>{4<sup>4</sup>.6<sup>2</sup>.8<sup>9</sup>}. Furthermore, the photoluminescence investigation indicates that both Pb(II) compounds could be a prospective candidate for developing luminescent sensors for the selective sensing of Fe<sup>3+</sup> ion through fluorescence quenching.</p>

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Crystal Structures and Luminescent Sensors of Two Pb(II) 2D/3D Coordination Polymers Built by Different Functionalized Ligand

  • 期刊论文

  • 发表日期：

    2026年3月28日

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  • Lin-Yun Xin,
  • Feng-Yang Ju,
  • Xi-Yue Zhang,
  • Yu-Shu Xia,
  • Guang-Zhen Liu

摘要

Abstract

Two novel Pb(II) 2D/3D coordination polymers using different functional ligand, namely [Pb2(nbca)2]n (I) and [Pb0.5(dcia)]n (II), have been synthesized by the hydrothermal reaction and characterized by single crystal X-ray diffraction, powder X-ray diffraction, IR spectroscopy, thermogravimetric analysis, and fluorescent spectra (nbca is 2,3-norbornanedicarboxylic acid; dcia is 3,5-dichloroisonicotinic acid anion). The single-crystal X-ray diffractions reveal that two complexes exhibit different networks displaying remarked structural sensitivity to functionalized ligands. Among them, complex I crystallizes in monoclinic crystal system, space group P21/c and features a two-dimensional pyknotic layer structure. Whereas the complex II crystallizes in Tetragonal crystal system, space group P42/n and features a 3D (3,6)-connected jxj topology with the Schläfli symbol of {42.6}2{44.62.89}. Furthermore, the photoluminescence investigation indicates that both Pb(II) compounds could be a prospective candidate for developing luminescent sensors for the selective sensing of Fe3+ ion through fluorescence quenching.