Colorimetric and Photothermal Hollow Nanocomposite Based on Silver-Seeded Prussian Blue Analog for Dopamine Monitoring and Photothermal Sterilization AITranslate

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Multi-element Prussian blue analog (PBA) nanocomposites have attracted wide attention for their superior characteristics to single-functional nanomaterials in extensive applications of diagnosis and therapy. In this study, a novel hollow nanocomposite was designed and fabricated by embedding S2− and Ag nanoparticles into a NiCuMnFe (PBA). The introduction S2− and Ag nanoparticles greatly enhanced the catalytic and photothermal performance of multi-element NiCuMnFe PBA. Based on its versatility of outstanding performance, a rapid and sensitive colorimetric detection platform for dopamine (DA), with a limit of detection (LOD) of 0.567 μM was constructed, and an efficient antibacterial nanoplatform was obtained with highly effective antibacterial performance (100% inhibition rate of bacteria under optimal conditions). This work provides a feasible reference for the reasonable design of multifunctional nanocomposites in biosensor and medical treatment applications.