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. 2022 Jun 3;7(23):20298–20305. doi: 10.1021/acsomega.2c02298

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© 2022 The Authors. Published by American Chemical Society

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Device response to H₂O₂. (A) ECL images obtained with 1, 2.5, 5, and 10 mM H₂O₂. Driving voltage: 2.4 V. (B) Dependence of ECL intensity on H₂O₂ concentration obtained at different driving voltages (1.6, 2.0, and 2.4 V). (C) Dependence of ECL intensity on H₂O₂ concentration obtained with different area ratios of cathodic and anodic poles (A_c/A_a = 0.25, 0.5, 1, and 2.25). Driving voltage: 2.0 V. The symbols and error bars in B (n = 9) and C (n = 3) indicate, respectively, the means and standard deviations of ECL intensities, which were measured experimentally from separate anodic poles in the same device under the designated conditions.