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. Author manuscript; available in PMC: 2021 Mar 5.
Published in final edited form as: ACS Appl Mater Interfaces. 2021 Jan 15;13(8):9491–9499. doi: 10.1021/acsami.0c20707

Figure 2.

Figure 2.

E-AB sensor performance using electrodes modified with COC-32-MB via target-assisted immobilization. SWV spectra collected at various concentrations of cocaine using electrodes modified in high-salt PBS with (A) 2 mM or (B) 250 μM cocaine. (C) Calibration curves derived from SWV spectra for electrodes modified with COC-32-MB plus 2 mM (brown) or 250 μM cocaine (pink) and electrodes modified with aptamer alone (black). (D) Linear ranges and LODs of electrodes fabricated via different methods. Error bars represent the standard deviation for three working electrodes from each measurement.