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A fluorescence assay is described for the fluorometric determination of dopamine (DA). It based on the use of silica-coated CdTe quantum dots (QD@SiO2). These were fabricated through a hydrothermal process. When DA is added to a solution of the QD@SiO2 and then oxidized by oxygen under catalytic action of tyrosinase to form dopamine quinone, the fluorescence of QD@SiO2 (acquired at excitation/emission...
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