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(A) Schematic illustration of oxidation color reaction of TMB by H2O2 catalyzed by C-dots; (B) Time-dependent absorbance changes at 652 nm of TMB in different reaction systems: (a) C-dots + TMB, (b) TMB + H2O2 and (c) TMB + C-dots + H2O2 in sodium acetate buffer (0.2 M) at pH 3.5 and a temperature of 35 °C. Reproduced with permission from [36]. Copyright (2011) Royal Society of Chemistry.
