Carbon quantum dot-gold nanocluster nanosatellite for ratiometric fluorescence probe and imaging for hydrogen peroxide in living cells

[Display omitted] •Carbon quantum dot-gold nanocluster nanosatellite was synthesized.•High FRET efficiency between carbon quantum dots and gold nanoclusters was displayed.•A sensitive ratiometric fluorescence probe for H2O2 was proposed.•The response toward H2O2 of proposed nanosatellite probe was s...

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