Selective FRET-based sensing of 4-nitrophenol and cell imaging capitalizing on the fluorescent properties of carbon nanodots from apple seeds

[Display omitted] •A sensitive and selective FRET-based sensing method for 4-nitrophenol determination was established.•Nitrogen-doped carbon dots were synthesized from apple seeds, by pyrolysis and are studied as sensing nanoprobes.•The dots are bright, of low toxicity and lend themselves to being...

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