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<p>A multi-function fluorescent probe <b>HT</b> was synthesized from 2,4-dihydroxybenzaldehyde and 6-methoxy-2-naphthaldehyde. <b>HT</b> demonstrated a remarkable turn on response to detect Zn<sup>2+</sup> in ethanol solution with strong anti-interference ability. Additionally, <b>HT</b> exhibited exceptional proficiency in discerning minute traces of water present in conventional organic solvents. The detection limit for Zn<sup>2+</sup> was 1.88 × 10<sup>− 7</sup> mol·L<sup>− 1</sup>, with a coordination ratio of 2:1 between <b>HT</b> and Zn<sup>2+</sup>. Furthermore, the detection limits of <b>HT</b> for water in various solvents such as EtOH, DMSO, DMF, CH<sub>3</sub>CN, THF, 1,4- Dioxane were 0.0089%, 0.0211%, 0.0364%, 0.0472%, 0.0161%, 0.0116% (<i>V/V</i>), respectively. Moreover, <b>HT</b> demonstrated its practical application potential by accurately determining the alcohol content in different Chinese Baijiu samples.</p>

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A Highly Sensitive Fluorescent Probe for the Detection of Zn2+ and Water as Well as Application in Alcoholic Beverages

  • 期刊论文

  • 发表日期：

    2025年2月22日

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  • Hao Hu,
  • Lei Xue,
  • Haibin Wang

摘要

A multi-function fluorescent probe HT was synthesized from 2,4-dihydroxybenzaldehyde and 6-methoxy-2-naphthaldehyde. HT demonstrated a remarkable turn on response to detect Zn2+ in ethanol solution with strong anti-interference ability. Additionally, HT exhibited exceptional proficiency in discerning minute traces of water present in conventional organic solvents. The detection limit for Zn2+ was 1.88 × 10− 7 mol·L− 1, with a coordination ratio of 2:1 between HT and Zn2+. Furthermore, the detection limits of HT for water in various solvents such as EtOH, DMSO, DMF, CH3CN, THF, 1,4- Dioxane were 0.0089%, 0.0211%, 0.0364%, 0.0472%, 0.0161%, 0.0116% (V/V), respectively. Moreover, HT demonstrated its practical application potential by accurately determining the alcohol content in different Chinese Baijiu samples.