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高等学校化学研究 ›› 2022, Vol. 38 ›› Issue (6): 1453-1460.doi: 10.1007/s40242-022-2032-y

• Articles • 上一篇    下一篇

Fabricating UCNPs-AuNPs Fluorescent Probe for Sensitive Sensing Thiamphenicol

YI Jiaqi, LI Xiaoshuang, CUI Di, HAN Lixia, JIANG Wei, ZHANG Renguo, NIU Na, CHEN Ligang   

  1. Key Laboratory of Forest Plant Ecology, College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, P. R. China
  • 收稿日期:2022-01-26 出版日期:2022-12-01 发布日期:2022-03-17
  • 通讯作者: NIU Na, CHEN Ligang E-mail:niuna@nefu.edu.cn;analchem@nefu.edu.cn
  • 基金资助:
    This work was supported by the Fundamental Research Funds for the Central Universities, China(No.2572021BU03), the "111" Project of China(No.B20088), the Heilongjiang Touyan Innovation Team Program, China(Tree Genetics and Breeding Innovation Team) and the Fund of the Key Laboratory of Superlight Materials and Surface Technology of Harbin Engineering University, China.

Fabricating UCNPs-AuNPs Fluorescent Probe for Sensitive Sensing Thiamphenicol

YI Jiaqi, LI Xiaoshuang, CUI Di, HAN Lixia, JIANG Wei, ZHANG Renguo, NIU Na, CHEN Ligang   

  1. Key Laboratory of Forest Plant Ecology, College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, P. R. China
  • Received:2022-01-26 Online:2022-12-01 Published:2022-03-17
  • Contact: NIU Na, CHEN Ligang E-mail:niuna@nefu.edu.cn;analchem@nefu.edu.cn
  • Supported by:
    This work was supported by the Fundamental Research Funds for the Central Universities, China(No.2572021BU03), the "111" Project of China(No.B20088), the Heilongjiang Touyan Innovation Team Program, China(Tree Genetics and Breeding Innovation Team) and the Fund of the Key Laboratory of Superlight Materials and Surface Technology of Harbin Engineering University, China.

摘要: Anovel fluorescent probe has been constructed based on fluorescence resonance energy transfer(FRET) between upconversion nanomaterials(UCNPs) NaYF4:Yb,Er and gold nanoparticles(AuNPs). The fluorescent "off-on" switching was formed for the detection of thiamphenicol(TAP) in egg samples. The fluorescence of UCNPs can be quenched to a certain degree by AuNPs. After adding TAP, the AuNPs generated aggregation and the fluorescence of UCNPs was recovered. The synthesized amination UCNPs and AuNPs were characterized by Fourier transform infrared spectroscopy(FTIR), UV-Vis, X-ray diffraction(XRD), energy dispersive spectrometer(EDS), and transmission electron microscope(TEM) techniques for observation and confirmation. As a model target, the detection of TAP has two linear ranges in the buffer solution within 0.01-0.1 μmol/L and 0.1-1 μmol/L using this fluorescent probe. The detection limit was obtained to be 0.003 μmol/L(S/N=3), which is favorable for trace analysis. The recovery of TAP from 98.2% to 105.3% was obtained, and the relative standard deviation(RSD) was from 2.5% to 4.3%. Furthermore, the method established in this study based on the UCNPs auto-low background fluorescence has high selectivity and strong ability to eliminate interference, which is beneficial to analyzing complex samples.

关键词: Upconversion nanomaterial, Fluorescent switch, Thiamphenicol, Fluorescence resonance energy transfer, Egg analysis

Abstract: Anovel fluorescent probe has been constructed based on fluorescence resonance energy transfer(FRET) between upconversion nanomaterials(UCNPs) NaYF4:Yb,Er and gold nanoparticles(AuNPs). The fluorescent "off-on" switching was formed for the detection of thiamphenicol(TAP) in egg samples. The fluorescence of UCNPs can be quenched to a certain degree by AuNPs. After adding TAP, the AuNPs generated aggregation and the fluorescence of UCNPs was recovered. The synthesized amination UCNPs and AuNPs were characterized by Fourier transform infrared spectroscopy(FTIR), UV-Vis, X-ray diffraction(XRD), energy dispersive spectrometer(EDS), and transmission electron microscope(TEM) techniques for observation and confirmation. As a model target, the detection of TAP has two linear ranges in the buffer solution within 0.01-0.1 μmol/L and 0.1-1 μmol/L using this fluorescent probe. The detection limit was obtained to be 0.003 μmol/L(S/N=3), which is favorable for trace analysis. The recovery of TAP from 98.2% to 105.3% was obtained, and the relative standard deviation(RSD) was from 2.5% to 4.3%. Furthermore, the method established in this study based on the UCNPs auto-low background fluorescence has high selectivity and strong ability to eliminate interference, which is beneficial to analyzing complex samples.

Key words: Upconversion nanomaterial, Fluorescent switch, Thiamphenicol, Fluorescence resonance energy transfer, Egg analysis