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- W2082869120 abstract "An in situ spectroelectrochemical method has been successfully used to study the electrocatalytic oxidation of guanine on an anisomerous ruthenated porphyrin [Ru(bpy)2(MPyTMPP)Cl]+ (bpy = 2, 2′-bipyridine and MPyTMPP = 5-(4-pyridyl)-10,15,20-tris(4-metylphenyl)porphyrin) modified indium-tin oxide (ITO) electrode. The [Ru(bpy)2(MPyTMPP)Cl]+/ITO electrode shows a pair of well-defined redox peaks at the formal potential of 0.79 V (vs. Ag–AgCl/0.05 M NaCl) and an intense emission peak at 654 nm. The evidences from photo-induced potentiometric measurement and electrochemically induced emission spectra under the excitation of visible light suggest the formation of Ru(III)-based species, which quenches the luminescence of Ru(II)-based excited states by an analogous Stern–Volmer model. The [Ru(bpy)2(MPyTMPP)Cl]+/ITO electrode exhibits a good linear electrocatalytic response for guanine oxidation between 0.05 and 0.4 mM. The electrocatalytic oxidation of guanine is found to fully restore the characteristic spectral response weakened by Ru(III)-based species. Taken together, the results from this study provide a powerful basis for better understanding the electrocatalytic and photo-induced oxidation of analytes by dye-redox mediators." @default.
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- W2082869120 date "2013-05-01" @default.
- W2082869120 modified "2023-09-26" @default.
- W2082869120 title "In situ spectroelectrochemical monitoring during the electrocatalytic oxidation of guanine on [Ru(bpy)2(MPyTMPP)Cl]+/ITO electrode" @default.
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- W2082869120 doi "https://doi.org/10.1016/j.jelechem.2013.03.013" @default.
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