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Electrochemical Oxidation of Diethyl 1,4‐Dihydro‐2,4,6‐trimethyl‐3,5‐pyridinedicarboxylate on a Glassy Carbon Electrode as Model Compound of NADH
Author(s) -
Rosales A. García,
Montoya M. Ruiz,
Galvín R. Marín,
Mellado J. M. Rodríguez
Publication year - 1999
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/(sici)1521-4109(199901)11:1<32::aid-elan32>3.0.co;2-y
Subject(s) - electrochemistry , electrode , glassy carbon , chemistry , carbon fibers , inorganic chemistry , nuclear chemistry , materials science , cyclic voltammetry , composite material , composite number
The electrooxodation of diethyl 1,4‐dihydro‐2,4,6‐trimethyl‐3,5‐pyridinedicarboxylate (DTP) in ethanol/water solutions on a glassy carbon electrode has been studied by linear‐sweep cyclic voltammetry. Convolution voltammetry was used to analyze the I‐E curves. From the experimental results it was concluded that in acidic media, the rate‐determining step, r.d.s., was the deprotonation of the radical cation formed after the first one‐electron transfer. In basic media, the mechanism consisted of a DISP1 scheme in which r.d.s. is the uptake of an H + ion by both the OH − ion and the basic components of the buffer. The relative rate constant of the carbonate ion with respect to the OH − is calculated.