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A novel and sensitive ratiometric fluorescent assay for monitoring kinase activity based on carboxypeptidase Y (CPY) digestion by using Au nanoclusters (AuNCs) and CdSe/ZnS QDs@SiO2 as the dual-emission nanoparticles is developed. This approach can not only sensitively monitor the kinase activity with affording built-in correction which avoids environmental interferences, but also realize visual detection...
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