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<p>The detection of volatile organic compounds (VOCs) such as acetone in breath is a promising tool for non-invasive medical diagnosis and monitoring of diabetes. Graphene Quantum Dots (GQDs) are nanomaterials characterized by their excellent fluorescence properties due to their strong quantum confinement effects that can be used to develop fluorescent sensors. The addition of metal nanoparticles has been shown to enhance the fluorescent properties of carbon-based materials. In this work, Graphene Oxide Quantum Dots (GOQDs) functionalized with gold nanoparticles (AuNPs) were synthesized. The mechanism exhibited by the GOQDs/AuNPs sensor for acetone detection was a Förster Resonance Energy Transfer (FRET) process. In addition, the developed sensor of GOQDs/AuNPs (λ<sub>em</sub> = 365&#xa0;nm) exhibited a LOD of 0.40, respectively, toward acetone due to an energy transfer complex formation.</p> Graphical abstract <p>Fluorescent sensing scheme for acetone utilizing carbon dots Au hybrid composites.</p>

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Acetone fluorescent sensing with carbon dots AuNps hybrid composite

  • 期刊论文

  • 发表日期：

    2025年1月30日

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  • Omar Isaac Torres,
  • Rocio Berenice Dominguez,
  • Velia Carolina Osuna

摘要

The detection of volatile organic compounds (VOCs) such as acetone in breath is a promising tool for non-invasive medical diagnosis and monitoring of diabetes. Graphene Quantum Dots (GQDs) are nanomaterials characterized by their excellent fluorescence properties due to their strong quantum confinement effects that can be used to develop fluorescent sensors. The addition of metal nanoparticles has been shown to enhance the fluorescent properties of carbon-based materials. In this work, Graphene Oxide Quantum Dots (GOQDs) functionalized with gold nanoparticles (AuNPs) were synthesized. The mechanism exhibited by the GOQDs/AuNPs sensor for acetone detection was a Förster Resonance Energy Transfer (FRET) process. In addition, the developed sensor of GOQDs/AuNPs (λem = 365 nm) exhibited a LOD of 0.40, respectively, toward acetone due to an energy transfer complex formation.

Graphical abstract

Fluorescent sensing scheme for acetone utilizing carbon dots Au hybrid composites.