Novel chloramphenicol sensor based on aggregation-induced electrochemiluminescence and nanozyme amplification

References

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755Novel chloramphenicol sensor based on aggregation-induced electrochemiluminescence and nanozyme amplificationhttps://doi.org/10.1016/j.bios.2020.112944CompositeCOF-AI-ECL

Materials

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755COF-AI-ECL200-300nmSEMSEM imaging (Fig. 2A) revealed that the microscopic morphology of the COF-AI-ECL material had a cross-linked and hollow frame consisting of vermicular structures with diameters of 200–300 nm

Kinetics

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Applications

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755COF-AI-ECLThe selectivity of the sensor for CAP in the presence of matrix interferences was analysed. Common veterinary antibiotics, such as tetracycline, aureomycin, oxytetracycline, doxycycline, thiamphenicol, virginiamycin, lincomycin, penicillin, amoxicillin, and florfenicol, as well as common metal ions, such as Fe2+, Fe3+, Cd2+, Al3+, Cr3+, Cu2+, Zn2+, Hg2+, Co2+, and Ca2+, were used to prepare a complex matrix sample containing CAP (5 ×10−11 mol/L), 10 antibiotics (5 × 10−8 mol/ L each), and 10 metal ions (5 × 10−7 mol/L each). The ECL responses (ΔI) to the 5 × 10−11 mol/L CAP standard sample and the complex matrix sample were similar (relative deviation < 5.0%) (Fig. S11). Using the same method, the influence of each individual interference on the ECL response was investigated. The results showed that common veterinary antibiotics and common metal ions affect the intensity of the detected signal by less than 5.0%chloramphenicolE-chem5*10-13-4*10-10M1.18*10-13M85%-106.2%