Dan-yang FAN, Xue-cheng ZHANG, Jun GAO, Jia-bin WANG, Hai-xia LÜ. Study on Specific Detection of Sulfadimethoxine Based on Aptamer-Modified Up-Conversion Fluorescent Nanomaterial[J]. Spectroscopy and Spectral Analysis, 2022, 42(11): 3409
- Spectroscopy and Spectral Analysis
- Vol. 42, Issue 11, 3409 (2022)
Fig. 1. FTIR spectra of PAA, OA-UCNPs and PAA-UCNPs
a : PAA; b : OA-UCNPs; c : PAA-UCNPs
Fig. 2. SEM images of OA-UCNPs (a) and PAA-UCNPs (b)
Fig. 3. UV-Vis absorption spectra of Aptamer, PAA-UCNPs and Apt-UCNPs
Fig. 4. Schematic diagram of Apt-UCNPs used to detect SDM
Fig. 5. Fluorescence spectra of Apt-UCNPs and absorption spectra of cDNA-BHQ1
Fig. 6. (a) Fluorescence spectra and (b) quenching efficiency of Apt-UCNPs at different concentrations of cDNA-BHQ1
Fig. 7. (a) Fluorescence spectra and (b) standard curve of Apt-UCNPs under different concentrations of SDM system
Fig. 8. Fluorescence spectra of Apt-UCNPs in the presence of different substances
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