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Fig. 4

Ag+ sensing performance of the peptide-AuNPs system

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(a) Fluorescence spectra of peptide-AuNPs with different Ag+ concentra-tions; (b) Responses (F/F1) of peptide-AuNPs with different Ag+ con-centrations, and inset shows the response linearity of the assay at the Ag+ concentrations range of 5 to 800 nmol/L; (c) Reaction time of peptide-AuNPs with Ag+.

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