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<p> A&#xa0;novel ternary electrochemiluminescence (ECL) aptasensor was creatively proposed for florfenicol&#xa0;(FF) detection, on account of the manganese-nitrogen dual-doped carbon dots (Mn-NHCDs) emitter and the facilitation of triethylamine (TEA) by zinc oxide (ZnO). First, Mn-NHCDs with low excitation potentials and excellent electrochemical luminescence properties were synthesized. Then, a newly formulated ZnO with an enlarged specific surface area and an appropriate mesoporous structure was utilized to load Mn-NHCDs, thereby diminishing the leakage of Mn-NHCDs and stabilizing the luminescence within the system. More importantly, ZnO can serve as a new co-reaction accelerator for TEA to improve the reaction rate of Mn-NHCDs with TEA efficiently. Furthermore, owing to the overlap of spectra, we employed an ECL resonance energy transfer (ECL-RET) strategy, with the Mn-NHCDs/ZnO as the donor and black hole quencher (BHQ) as the acceptor. The ECL biosensor illustrates an extremely selective and sensitive determination of FF from 1.00&#xa0;fg&#xa0;mL⁻<sup>1</sup> to 10.0&#xa0;ng&#xa0;mL⁻<sup>1</sup> and a detection Limit of 0.413&#xa0;fg mL⁻<sup>1</sup>. We envision that our aptasensor will provide substantial assurance concerning food safety.</p> Graphical Abstract <p></p>

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Enhanced electrochemiluminescence aptasensor using ZnO as the co-reaction accelerator of Mn-NHCDs/TEA system for the detection of florfenicol

  • 期刊论文

  • 发表日期：

    2025年9月11日

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  • Shan Ou,
  • Min Qing,
  • Zhaode Mu,
  • Yonghua Yuan,
  • Yueyuan Li,
  • Lijuan Bai

摘要

A novel ternary electrochemiluminescence (ECL) aptasensor was creatively proposed for florfenicol (FF) detection, on account of the manganese-nitrogen dual-doped carbon dots (Mn-NHCDs) emitter and the facilitation of triethylamine (TEA) by zinc oxide (ZnO). First, Mn-NHCDs with low excitation potentials and excellent electrochemical luminescence properties were synthesized. Then, a newly formulated ZnO with an enlarged specific surface area and an appropriate mesoporous structure was utilized to load Mn-NHCDs, thereby diminishing the leakage of Mn-NHCDs and stabilizing the luminescence within the system. More importantly, ZnO can serve as a new co-reaction accelerator for TEA to improve the reaction rate of Mn-NHCDs with TEA efficiently. Furthermore, owing to the overlap of spectra, we employed an ECL resonance energy transfer (ECL-RET) strategy, with the Mn-NHCDs/ZnO as the donor and black hole quencher (BHQ) as the acceptor. The ECL biosensor illustrates an extremely selective and sensitive determination of FF from 1.00 fg mL⁻1 to 10.0 ng mL⁻1 and a detection Limit of 0.413 fg mL⁻1. We envision that our aptasensor will provide substantial assurance concerning food safety.

Graphical Abstract