Fig. 3
Fluorescence spectra of the AR-rGO/AgNT-DA system. (a) 1.75×10−6 mol/L AR-pH 6.0 PBS; (b) 1.75×10−6 mol/L AR-pH 6.0 PBS-8.62 μg/mL AgNT-0.04 mol/L NaCl; (c) 20 μg/mL GO -1.75×10−6 mol/L AR-pH 6.0 PBS; (d) 20 μg/mL GO -1.75×10−6 mol/L AR-pH 6.0 PBS -175 μmol/L DA; (e) 8.62 μg/mL rGO/AgNT-1.75×10−6 mol/L AR-pH 6.0 PBS-0.04 mol/L NaCl; (f) (a)-50 μmol/L DA; (g) (a)-100 μmol/L DA; (h) (a)-175 μmol/L DA; (i) (a)-250 μmol/L DA; (j) (a)-500 μmol/L DA