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<p>A new anthraquinone-based tetra-benzimidazolium salt 1,8-bis{2’-[2’’-(<i>N</i>-picoly-benzimidazoliumyl)ethyl]benzimidazoliumyl}ethoxy-9,10-anthraquinone hexafluorophosphate (<b>1</b>) was prepared and characterized. Particularly, the recognition performance of H<sub>2</sub>PO<sub>4</sub><sup>−</sup> using of compound <b>1</b> as a chemical sensor was investigated through fluorescence spectra, ultraviolet spectra, HRMS, <sup>1</sup>H NMR titrations and IR spectra. The experimental results showed compound <b>1</b> has a good recognition ability for H<sub>2</sub>PO<sub>4</sub><sup>−</sup>.</p> Graphical abstract <p>One tetra-benzimidazolium salt <b>1</b> was prepared and characterized. The recognition of&#xa0;H<sub>2</sub>PO<sub>4</sub><sup>−</sup> using <b>1</b> as a chemosensor was studied.</p> <p></p>

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Preparation of tetra-benzimidazolium fluorescence probe based on anthraquinone and the detection of dihydrogen phosphate

  • 期刊论文

  • 发表日期：

    2026年5月13日

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  • Yingjie Liu,
  • Xiaofeng Sun,
  • Qingxiang Liu

摘要

A new anthraquinone-based tetra-benzimidazolium salt 1,8-bis{2’-[2’’-(N-picoly-benzimidazoliumyl)ethyl]benzimidazoliumyl}ethoxy-9,10-anthraquinone hexafluorophosphate (1) was prepared and characterized. Particularly, the recognition performance of H2PO4− using of compound 1 as a chemical sensor was investigated through fluorescence spectra, ultraviolet spectra, HRMS, 1H NMR titrations and IR spectra. The experimental results showed compound 1 has a good recognition ability for H2PO4−.

Graphical abstract

One tetra-benzimidazolium salt 1 was prepared and characterized. The recognition of H2PO4− using 1 as a chemosensor was studied.