Fig. 2. Endogenous light-emitting multimodal devices. 3D representation of the light intensity profiles as a function of the (a) S2O82− concentration obtained by using a Pt-LED-Mg device in a 0.1 M PBS (pH 7.4), 1 mM Ru(bpy)32+, 10 mM H2SO4 solution or (b) H2O2 concentration obtained by using a divided Fe-LED-Mg device in a 0.1 M PBS (pH 7.4) solution, in the presence of L012 (1 mM) and H2SO4 (10 mM) in the cathodic and anodic compartments, respectively. The insets show the optical pictures of the corresponding endogenous multimodal light-emitting devices at different co-reactant concentrations (indicated in the figure).
