Fig. 3: Electrochemical behavior and ascorbate sensing performances of HT-STAM-17-OEt. | Nature Communications

Fig. 3: Electrochemical behavior and ascorbate sensing performances of HT-STAM-17-OEt.

From: Natural oxidase-mimicking copper-organic frameworks for targeted identification of ascorbate in sensitive sweat sensing

Fig. 3

a CV curves and b amperometry response at 0.5 V vs. Ag/AgCl for STAM-17-OEt and HT-STAM-17-OEt in 0.1 M NaCl (pH = 7) at 20 mV s−1. c Amperometry response of HT-STAM-17-OEt to successive addition of ascorbate at 0.5 V vs. Ag/AgCl and the corresponding calibration curve (relative standard deviation was obtained from three groups of samples). d Sensitivity map of HT-STAM-17-OEt in different electrolytes with different pH values, where the 1–4 electrolyte types represent aqueous solutions containing 0.1 M NaCl, 0.1 M NaCl/18.5 mM KCl, 0.1 M NaCl/18.5 mM KCl/12.4 mM CaCl2, 0.1 M NaCl/18.5 mM KCl/12.4 mM CaCl2/1 mM NH4Cl, respectively. e, f Platform model supported by polyethylene glycol terephthalate (PET) substrate and data collection of the HT-STAM-17-OEt-based sensor.

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