ScholarWorks@성균관대학교

초록

Ru(bpy)(3)(2+) is commonly used in electrochemiluminescence (ECL) as a conventional luminophore. However, Ru(bpy)(3)(2+) can leak off the electrode surface, resulting in a reduced ECL signal. In this work, a nanocube composite material Ru@ZIF was prepared by incorporating doping luminescent Ru(bpy)(3)(2+) into the skeleton of Zn(II) ions and 2-methylimidazole (2-MI), and the ECL probe Ru@ZIF-Pd was prepared by in situ growth of Pd nanoparticles (Pd NPs). Potassium persulfate (K2S2O8) was used as a coreactant to investigate the cathodic ECL behavior. The ZnCoCH@MXene-Au (ZC@T-Au) was used as a coreactant accelerator to promote the production of SO4 center dot-, which effectively amplified the ECL intensity of Ru@ZIF-Pd. Under optimal experimental conditions, we successfully constructed an aptamer ECL sensor, which achieves an accurate detection of acetamiprid from 0.1 fM to 10 mu M with a detection limit of 0.029 fM. It provides a potential idea for the detection of pesticide residues in food.

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