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<p>This report details the synthesis and analysis of a fluorescence probe designed to detect aluminum ions. The probe is constructed from a Schiff base compound derived from 2-hydroxy-1-naphthaldehyde and 4-amino-5-methyl-<i>4&#xa0;H</i>-1,2,4-triazole-3-thiol, which exhibits a strong increase in blue fluorescence upon binding with Al<sup>3+</sup> ions. Research into its behavior in water-acetonitrile mixtures revealed an aggregation-induced emission enhancement effect for the probe. Notably, it can detect Al<sup>3+</sup> at remarkably low concentrations (0.62 µM) in buffered acetonitrile media and can be applied to water analysis using standard analytical technique. The structural and spectroscopic properties of the probe and its Al<sup>3+</sup> complex were confirmed through modern quantum chemical calculations. Overall, this work contributes important knowledge for designing accurate fluorescent probes for metal ions.</p>

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Design and development of a naphthalene-derived fluorescent probe for Al3+ recognition: Combined experimental and computational approach

  • 期刊论文

  • 发表日期：

    2026年7月27日

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  • Maksim N. Zavalishin,
  • Artemiy A. Guschin,
  • Stefania V. Mayorova,
  • George A. Gamov

摘要

This report details the synthesis and analysis of a fluorescence probe designed to detect aluminum ions. The probe is constructed from a Schiff base compound derived from 2-hydroxy-1-naphthaldehyde and 4-amino-5-methyl-4 H-1,2,4-triazole-3-thiol, which exhibits a strong increase in blue fluorescence upon binding with Al3+ ions. Research into its behavior in water-acetonitrile mixtures revealed an aggregation-induced emission enhancement effect for the probe. Notably, it can detect Al3+ at remarkably low concentrations (0.62 µM) in buffered acetonitrile media and can be applied to water analysis using standard analytical technique. The structural and spectroscopic properties of the probe and its Al3+ complex were confirmed through modern quantum chemical calculations. Overall, this work contributes important knowledge for designing accurate fluorescent probes for metal ions.