Electrochemical Detection of Sequence-Specific DNA with the Amplification of Gold Nanoparticles
Figure 2
(A) SEM images of AuNPs at various deposition time. (a) 0, (b) 50 s, (c) 110 s, Deposition potential is −250 mV (versus SCE). (B) DPV responses of adriamycin dependence of deposition time. Electrochemical deposition was performed in 3.0 mM HAuCl4 at various times (, and 64 s). DPV measurement was performed in 0.01 M PBS (pH 7.40) containing 1.0 × 10−6 M adriamycin. DPV parameters were as follows: potential range: −0.45 ~−0.80 V; amplitude: 0.05 V; pulse width: 0.05 s; sample width: 0.0167 s; pulse period: 0.2 s; quiet time: 2 s.
