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<p>The pressing necessity to devise a fluorescent probe capable of identifying volatile organic compounds such as acetophenone (AP). This groundbreaking advancement plays a crucial role in preserving environmental health and ensuring public health. In this work, we synthesized a ratiometric UiO-66-NH<sub>2</sub>@CQDs sensor through post-synthetic modification by anchoring carbon quantum dots onto UiO-66-NH<sub>2</sub> metal-organic framework, which could be readily utilized as self-calibrating nanoprobe for selective detection of AP over other potential interferants. Upon the addition of AP, UiO-66-NH<sub>2</sub>@CQDs featured a decreased emission at 430&#xa0;nm and an enhanced emission at 550&#xa0;nm, accompanied by a characteristic fluorescence color transition from blue-green to yellow. By adopting the ration of I<sub>430nm</sub>/I<sub>550nm</sub> as the detection signal, UiO-66-NH<sub>2</sub>@CQDs could distinguish AP with excellent performance. The limit of detection for AP was estimated to be 175.6 nM, which was a significant value. Additionally, we demonstrated that on-site visual inspection of AP in industrial wastewater using a paper-based UiO-66-NH<sub>2</sub>@CQDs analysis device.</p> Graphical Abstract <p></p>

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Dual-Emission Ratiometric Fluorescent Probe Based on UiO-66-NH2@CQDs for Quantitative Detection of Acetophenone

  • 期刊论文

  • 发表日期：

    2025年10月17日

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  • Yongze Shou,
  • Zhouqing Xu,
  • Huijun Li,
  • Wenjie Liu,
  • Junkun Wang

摘要

The pressing necessity to devise a fluorescent probe capable of identifying volatile organic compounds such as acetophenone (AP). This groundbreaking advancement plays a crucial role in preserving environmental health and ensuring public health. In this work, we synthesized a ratiometric UiO-66-NH2@CQDs sensor through post-synthetic modification by anchoring carbon quantum dots onto UiO-66-NH2 metal-organic framework, which could be readily utilized as self-calibrating nanoprobe for selective detection of AP over other potential interferants. Upon the addition of AP, UiO-66-NH2@CQDs featured a decreased emission at 430 nm and an enhanced emission at 550 nm, accompanied by a characteristic fluorescence color transition from blue-green to yellow. By adopting the ration of I430nm/I550nm as the detection signal, UiO-66-NH2@CQDs could distinguish AP with excellent performance. The limit of detection for AP was estimated to be 175.6 nM, which was a significant value. Additionally, we demonstrated that on-site visual inspection of AP in industrial wastewater using a paper-based UiO-66-NH2@CQDs analysis device.

Graphical Abstract